Unreleased

If you're a contributor, please include your CHANGES entry in a file doc/changes/$PR_NAME.md. At release time, it will be incoporated into the changelog properly.

3.15.2 (2024-04-23)

Fixed

If no directory targets are defined, then do not evaluate enabled_if (#10442, @rgrinberg)
Fix a bug where Coq projects were being rebuilt from scratch each time the dependency graph changed. (#10446, fixes #10149, @alizter)

3.15.1 (2024-04-17)

Fixed

Fix overflow in sendfile stubs (copy of large files could fail or end with truncated files) (#10333, @tonyfettes)
Fix crash when a rule with a directory target is disabled with enabled_if (#10382, fixes #10310, @gridbugs)
melange: remove all restrictions around virtual libraries in Melange. They may be used as otherwise in libraries and executables. (#10412, @anmonteiro)
spawn: fix compatibility with RHEL7 (#10428, @emillon)

3.15.0 (2024-04-03)

Added

Add link flags to to ocamlmklib for ctypes stubs (#8784, @frejsoya)
Remove some unnecessary limitations in the expansions of percent forms in install stanza. For example, the %{env:..} form can be used to select files to be installed. (#10160, @rgrinberg)
Allow artifact expansion percent forms (%{cma:..}, %{cmo:..}, etc.) in more contexts. Previously, they would be randomly forbidden in some fields. (#10169, @rgrinberg)
Allow %{inline_tests} in more contexts (#10191, @rgrinberg)
Remove limitations on percent forms in the (enabled_if ..) field of libraries (#10250, @rgrinberg)
Support dialects in dune describe pp (#10283, @emillon)
Allow defining executables or melange emit stanzas with the same name in the same folder under different contexts. (#10220, @rgrinberg, @jchavarri)

Fixed

coq: Delay Coq rule setup checks so OCaml-only packages can build in hybrid Coq/OCaml projects when coqc is not present. Thanks to @vzaliva for the test case and report (#9845, fixes #9818, @rgrinberg, @ejgallego)
Fix conditional source selection with select on bigarray in OCaml 5 (#10011, @moyodiallo)
melange: fix inconsistency in virtual library implementation. Concrete modules within a virtual library can now refer to its virtual modules too (#10051, fixes #7104, @anmonteiro)
melange: fix a bug that would cause stale import paths to be emitted when moving source files within (include_subdirs ..) (#10286, fixes #9190, @anmonteiro)
Dune file formatting: output utf8 if input is correctly encoded (#10113, fixes #9728, @moyodiallo)
Fix expanding dependencies and locks specified in the cram stanza. Previously, they would be installed in the context of the cram test, rather than the cram stanza itself (#10165, @rgrinberg)
Fix bug with dune exec --watch where the working directory would always be set to the project root rather than the directory where the command was run (#10262, @gridbugs)
Regression fix: sign executables that are promoted into the source tree (#10263, fixes #9272, @emillon)
Fix crash when decoding dune-package for libraries with (include_subdirs qualified) (#10269, fixes #10264, @emillon)

Changed

Remove the --react-to-insignificant-changes option. (#10083, @rgrinberg)

3.14.2 (2024-03-12)

Fixed

fix compilation on non-glibc systems due to signal.h not being pulled in spawn stubs. (#10256, @emillon)

3.14.1 (2024-03-11)

Fixed

When a directory is changed to a file, correctly remove it in subsequent dune build runs. (#9327, fix #6575, @emillon)
Fix a problem with the doc-new target where transitive dependencies were missed during compile. This leads to missing expansions in the output docs. (#9955, @jonludlam)
coq: fix performance regression in coqdep unescaping (#10115, fixes #10088, @ejgallego, thanks to Dan Christensen for the report)
coq: memoize coqdep parsing, this will reduce build times for Coq users, in particular for those with many .v files (#10116, @ejgallego, see also #10088)
on Windows, use an unicode-aware version of CreateProcess to avoid crashes when paths contains non-ascii characters. (#10212, fixes #10180, @emillon)

3.14.0 (2024-02-12)

Added

Introduce a (dynamic_include ..) stanza. This is like (include foo) but allows foo to be the target of a rule. Currently, there are some limitations on the stanzas that can be generated. For example, public executables, libraries are currently forbidden. (#9913, @rgrinberg)
Introduce $ dune promotion list to print the list of available promotions. (#9705, @moyodiallo)
If Sherlodoc is installed, add a search bar in generated HTML docs (#9772, @EmileTrotignon)
Add only_sources field to copy_files stanza (#9827, fixes #9709, @jchavarri)
The (foreign_library) stanza now supports the (enabled_if) field. (#9914, @nojb)

Fixed

Fix $ dune install -p incorrectly recognizing packages that are supposed to be filtered (#9879, fixes #4814, @rgrinberg)
subst: correctly handle opam files in opam/ subdirectory (#9895, fixes #9862, @emillon)
Odoc private rules are not set up if a library is not available due to enabled_if (#9897, @rgrinberg and @jchavarri)

Changed

When dune language 3.14 is enabled, resolve the binary in (run %{bin:..} ..) from where the binary is built. (#9708, @rgrinberg)
boot: remove single-command bootstrap. This was an alternative bootstrap strategy that was used in certain conditions. Removal makes the bootstrap a bit slower on Linux when only a single core is available, but bootstrap is now reproducible in all cases. (#9735, fixes #9507, @emillon)

3.13.1 (2024-02-05)

Fix performance regression for incremental builds (#9769, fixes #9738, @rgrinberg)
Fix dune ocaml top-module to correctly handle absolute paths. (#8249, fixes #7370, @Alizter)
subst: ignore broken symlinks when looking at source files (#9810, fixes #9593, @emillon)
subst: do not fail on 32-bit systems when large files are encountered. Just log a warning in this case. (#9811, fixes #9538, @emillon)
boot: sort directory entries in readdir. This makes the dune binary reproducible in terms of filesystem order. (#9861, fixes #9794, @emillon)

3.13.0 (2024-01-16)

Added

Add command dune cache clear to completely delete all traces of the Dune cache. (#8975, @nojb)
Allow to disable Coq 0.8 deprecation warning (#9439, @ejgallego)
Allow OCAMLFIND_TOOLCHAIN to be set per context in the workspace file through the env stanza. (#9449, @rgrinberg)
Menhir: generate .conflicts file by default. Add new field to the (menhir) stanza to control the generation of this file: (explain <blang expression>). Introduce (menhir (flags ...) (explain ...)) field in the (env) stanza, delete (menhir_flags) field. All changes are guarded under a new version of the Menhir extension, 3.0. (#9512, @nojb)
Directory targets can now be cached. (#9535, @rleshchinskiy)
It is now possible to use special forms such as (:include) and variables %{read-lines:} in (modules) and similar fields. Note that the dependencies introduced in this way (ie the files being read) must live in a different directory than the stanza making use of them. (#9578, @nojb)
Remove warning 30 from default set for projects where dune lang is at least 3.13 (#9568, @gasche)
Add coqdoc_flags field to coq field of env stanza allowing the setting of workspace-wide defaults for coqdoc_flags. (#9280, fixes #9139, @Alizter)
ctypes: fix an error where (ctypes) with no (function_description) would cause an error trying refer to a nonexistent _stubs.a dependency (#9302, fix #9300, @emillon)

Changed

Check that package names in (depends) and related fields in dune-project are well-formed. (#9472, fixes #9270, @ElectreAAS)

Fixed

Do not ignore (formatting ..) settings in context or workspace files (#8447, @rgrinberg)
Fixed a bug where Dune was incorrectly parsing the output of coqdep when it was escaped, as is the case on Windows. (#9231, fixes #9218, @Alizter)
Copying mode for sandboxes will now follow symbolic links (#9282, @rgrinberg)
Forbid the empty (binaries ..) field in the env stanza in the workspace file unless language version is at least 3.2. (#9309, @rgrinberg)
[coq] Fix bug in computation of flags when composed with boot theories. (#9347, fixes #7909, @ejgallego)
Fixed a bug where the (select) field of the (libraries) field of the (test) stanza wasn't working properly. (#9387, fixes #9365, @Alizter)
Fix handling of the PATH argument to dune init proj NAME PATH. An intermediate directory called NAME is no longer created if PATH is supplied, so dune init proj my_project . will now initialize a project in the current working directory. (#9447, fixes #9209, @shonfeder)
Experimental doc rules: Correctly handle the case when a package depends upon its own sublibraries (#9461, fixes #9456, @jonludlam)
Resolve various public binaries to their build location, rather than to where they're copied in the _build/install directory (#9496, fixes #7908, @rgrinberg).
Correctly ignore warning flags in vendored projects (#9515, @rgrinberg)
Use watch exclusions in watch mode on MacOS (#9643, fixes #9517, @PoorlyDefinedBehaviour)
Fix merlin configuration for (include_subdirs qualified) modules (#9659, fixes #8297, @rgrinberg)
Fix handling of enabled_if in binary install stanzas. Previously, we'd ignore the result of enabled_if when evaluating %{bin:..} (#9707, @rgrinberg)

3.12.2 (2024-01-05)

Fix version check in runtest_alias for cram stanza (#9454, @emillon)
Fix stack overflow when a (run) action can not be parsed. (#9530, fixes #9529, @gridbugs)

3.12.1 (2023-11-29)

Revert unintended inclusion of #9250 and #9280 (@emillon)

3.12.0 (2023-11-28)

Introduce $ dune ocaml doc to open and browse documentation. (#7262, fixes #6831, @EmileTrotignon)
dune cache trim now accepts binary byte units: KiB, MiB, etc. (#8618, @Alizter)
No longer force colors for OCaml 4.03 and 4.04 (#8778, @rgrinberg)
Introduce new experimental odoc rules (#8803, @jonjudlam)
Introduce the runtest_alias field to the cram stanza. This allows removing default runtest alias from tests. (@rgrinberg, #8887)
Do not ignore libraries named bigarray when they are defined in conjunction with OCaml 5.0 (#8902, fixes #8901, @rgrinberg)
Dependencies in the copying sandbox are now writeable (#8920, @rgrinberg)
Absent packages shouldn't prevent all rules from being loaded (#8948, fixes #8630, @rgrinberg)
Correctly determine the stanza of menhir modules when (include_subdirs qualified) is enabled (@rgrinberg, #8949, fixes #7610)
Display cache location in Dune log (#8974, @nojb)
Re-run actions whenever (expand_aliases_in_sandbox) changes (#8990, @rgrinberg)
Rules that only use internal dune actions (write-file, echo, etc.) can now be sandboxed. (#9041, fixes #8854, @rgrinberg)
Do not re-run rules when their location changes (#9052, @rgrinberg)
Correctly ignore bigarray on recent version of OCaml (#9076, @rgrinberg)
Add test_ prefix to default test name in dune init project (#9257, fixes #9131, @9sako6)
[coq rules] Be more tolerant when coqc --print-version / --config don't work properly, and fallback to a reasonable default. This fixes problems when building Coq projects with (stdlib no) and likely other cases. (#8966, fix #8958, @Alizter, reported by Lasse Blaauwbroek)
Dune will now run at a lower framerate of 15 fps rather than 60 when INSIDE_EMACS. (#8812, @Alizter)
dune-build-info: when version="" is found in a META file, we now return None as a version string (#9177, @emillon)
Dune can now be built and installed on Haiku (#8795, fix #8551, @Alizter)
Mark installed directories in dune-package files. This fixes (package) dependencies against packages that contain such directories. (#8953, fixes #8915, @emillon)

3.11.1 (2023-10-09)

Fix dune rpc commands on Windows (#8806, fixes #8799, @nojb)
Fix inline_tests when the partition list is empty (#8849, fixes #8848, @hhugo)

3.11.0 (2023-09-22)

enabled_if now supports arch_sixtyfour variable (#8023, fixes #7997, @Alizter)
Use posix_spawn instead of fork on MacOS. This gives us a performance boost and allows us to re-enable thread. (#8090, @rgrinberg)
Experimental: Added a $ dune monitor command that can connect to a running dune build in watch mode and display the errors and progress. (#8152, @Alizter)
The progress RPC procedure now has an extra field for the In_progress constructor for the number of failed jobs. (#8212, @Alizter)
Add a --preview flag to dune fmt which causes it to print out the changes it would make without applying them (#8289, @gridbugs)
Introduce (source_trees ..) to the install stanza to allow installing entire source trees. (#8349, @rgrinberg)
Add --stop-on-first-error option to dune build which will terminate the build when the first error is encountered. (#8400, @pmwhite and @Alizter)
Dune now displays the number of errors when waiting for changes in watch mode. (#8408, fixes #6889, @Alizter)
Add with_prefix keyword for changing the prefix of the destination of installed files matched by globs. (#8416, @gridbugs)
Added experimental --display tui option for Dune that opens an interactive Terminal User Interface (TUI) when Dune is running. Press '?' to open up a help screen when running for more information. (#8429, @Alizter and @rgrinberg)
Add a warnings field to dune-project files as a unified mechanism to enable or disable dune warnings (@rgrinberg, 8448)
dune exec: support syntax like %{bin:program}. This can appear anywhere in the command line, so things like dune exec time %{bin:program} now work. (#6035, #8474, fixes #2691, @emillon, @Leonidas-from-XIV)
Make copy sandbox support directory targets. (#8705, fixes #7724, @emillon)
Add a new alias @doc-json to build odoc documentation in JSON format. This output can be consumed by external tools. (#8178, @emillon)
Modules that were declared in (modules_without_implementation), (private_modules) or (virtual_modules) but not declared in (modules) will raise an error. (#7674, @Alizter)
No longer emit linkopts(javascript) in META files (#8168, @hhugo)
Deprecate install destination paths beginning with ".." to prevent packages escaping their designated installation directories. (#8350, @gridbugs)
RPC message styles are now serialised meaning that RPC diagnostics keep their Ansi styling. (#8516, fixes #6921, @Alizter)
Truncate output from actions that produce too much output (@tov, #8351)
Allow libraries to shadow OCaml builtin libraries. Previously, builtin libraries would always take precedence. (@rgrinberg, #8558)
Remove warning against .dune files generated by pre dune 2.0 (#8611, @rgrinberg)
dune utop no longer links utop in "custom" mode, which should make this command considerably faster. (#8631, fixes #6894, @nojb)
Ensure that package names in dune-project are valid opam package names. (#8331, @emillon)
init: check that module names are valid (#8644, fixes #8252, @emillon)
dune init: parse --public as a public name (#8603, fixes #7108, @emillon)
Stop signing source files with substitutions. Sign only binaries instead (#8361, fixes #8360, @anmonteiro)
Remove versions 0.1 and 0.2 of the experimental ctypes extension. (#8293, @emillon)

3.10.0 (2023-07-31)

Add dune show rules as alias of the dune rules command. (#8000, @Alizter)
Fix %{deps} to expand properly in (cat ...) when containing 2 or more items. (#8196, @Alizter)
Add dune show installed-libraries as an alias of the dune installed-libraries command. (#8135, @Alizter)
Fix the severity of error messages sent over RPC which was missing. (#8193, @Alizter)
Add dune build --dump-gc-stats FILE argument to dump garbage collection stats to a named file. (#8072, @Alizter)
Fix bug with ppx and Reason syntax due to missing dependency in sandboxed action (#7932, fixes #7930, @Alizter)
Add dune describe package-entries to print all package entries (#7480, @moyodiallo)
Improve dune describe external-lib-deps by adding the internal dependencies for more information. (#7478, @moyodiallo)
Re-enable background file digests on Windows. The files are now open in a way that prevents race condition around deletion. (#8262, fixes #8268, @emillon)

3.9.3 (2023-07-31)

Fix flushing when using sendfile fallback (#8288, fixes #8284, @alan-j-hu)

3.9.2 (2023-07-25)

Disable background digests on Windows. This prevents an issue where unremovable files would make dune crash when the shared cache is enabled. (#8243, fixes #8228, @emillon)
Fix permission errors when sendfile is not available (#8234, fixes #8210, @emillon)

3.9.1 (2023-07-06)

Disable background operations and threaded console on MacOS and other Unixes where we rely on fork. (#8100, #8121, fixes #8083, @rgrinberg, @emillon)
Initialize async IO thread lazily. (#8122, @emillon)

3.9.0 (2023-06-28)

Validate file extension for $ dune ocaml top-module. (#8005, fixes #8004, @3Rafal)
Include the time it takes to read/write state files when --trace-file is enabled (#7960, @rgrinberg)
Add dune show command group which is an alias of dune describe. (#7946, @Alizter)
Include source tree scans in the traces produced by --trace-file (#7937, @rgrinberg)
Cinaps: The promotion rules for cinaps would only offer one file at a time no matter how many promotions were available. Now we offer all the promotions at once (#7901, @rgrinberg)
Do not re-run OCaml syntax files on every iteration of the watch mode. This is too memory consuming. (#7894, fix #6900, @rgrinberg)
Add --all option to dune rpc status to show all Dune RPC servers running. (#8011, fix #7902, @Alizter)
Remove some compatibility code for old version of dune that generated .merlin files. Now dune will never remove .merlin files automatically (#7562)
Add dune show env command and make dune printenv an alias of it. (#7985, @Alizter)
Add additional metadata to the traces provided by --trace-file whenever --trace-extended is passed (#7778, @rleshchinskiy)
Extensions used in (dialect) can contain periods (e.g., cppo.ml). (#7782, fixes #7777, @nojb)
Allow (include_subdirs qualified) to be used when libraries define a (modules ...) field (#7797, fixes #7597, @anmonteiro)
$ dune describe is now a command group, so arguments to subcommands must be passed after subcommand itself. (#7919, @Alizter)
The interface and implementation fields of a (dialect) are now optional (#7757, @gpetiot)
Add commands dune show targets and dune show aliases that display all the available targets and aliases in a given directory respectively. (#7770, grants #265, @Alizter)
Allow multiple globs in library's (stdlib (internal_modules ..)) (@anmonteiro, #7878)
Attach melange rules to the default alias (#7926, @haochenx)
In opam constraints, reject (and) and (or) with no arguments at parse time (#7730, @emillon)
Compute digests and manage sandboxes in background threads (#7947, @rgrinberg)
Add (build_if) to the (test) stanza. When it evaluates to false, the executable is not built. (#7899, fixes #6938, @emillon)
Add necessary parentheses in generated opam constraints (#7682, fixes #3431, @Lucccyo)

3.8.3 (2023-06-27)

Fix deadlock on Windows (#8044, @nojb)
When using sendfile to copy files on Linux, fall back to the portable version if it fails at runtime for some reason (NFS, etc). (#8049, fixes #8041, @emillon)

3.8.2 (2023-06-16)

Switch back to threaded console for all systems; fix unresponsive console on Windows (#7906, @nojb)
Respect -p / --only-packages for melange.emit artifacts (#7849, @anmonteiro)
Fix scanning of Coq installed files (@ejgallego, reported by @palmskog, #7895 , fixes #7893)
Fix RPC buffer corruption issues due to multi threading. This issue was only reproducible with large RPC payloads (#7418)
Fix printing errors from excerpts whenever character offsets span multiple lines (#7950, fixes #7905, @rgrinberg)

3.8.1 (2023-06-05)

Fix a crash when using a version of Coq < 8.13 due to the native compiler config variable being missing. We now explicitly default to (mode vo) for these older versions of Coq. (#7847, fixes #7846, @Alizter)
Duplicate installed Coq theories are now allowed with the first appearing in COQPATH being preferred. This is inline with Coq's loadpath semantics. This fixes an issue with install layouts based on COQPATH such as those found in nixpkgs. (#7790, @Alizter)
Revert #7415 and #7450 (Resolve ppx_runtime_libraries in the target context when cross compiling) (#7887, fixes #7875, @emillon)

3.8.0 (2023-05-23)

Fix string quoting in the json file written by --trace-file (#7773, @rleshchinskiy)
Read pkg-config arguments from the PKG_CONFIG_ARGN environment variable (#1492, #7734, @anmonteiro)
Correctly set MANPATH in dune exec. Previously, we would use the bin/ directory of the context. (#7655, @rgrinberg)
Allow overriding the ocaml binary with findlib configuration (#7648, @rgrinberg)
merlin: ignore instrumentation settings for preprocessing. (#7606, fixes #7465, @Alizter)
When a rule's action is interrupted, delete any leftover directory targets. This is consistent with how we treat file targets. (#7564, @rgrinberg)
Fix plugin loading with findlib. The functionality was broken in 3.7.0. (#7556, @anmonteiro)
Introduce a public_headers field on libraries. This field is like install_c_headers, but it allows to choose the extension and choose the paths for the installed headers. (#7512, @rgrinberg)
Load the host context findlib.conf when cross-compiling (#7428, fixes #1701, @rgrinberg, @anmonteiro)
Add a coqdoc_flags field to the coq.theory stanza allowing the user to pass extra arguments to coqdoc. (#7676, fixes #7954 @Alizter)
Resolve ppx_runtime_libraries in the target context when cross compiling (#7450, fixes #2794, @anmonteiro)
Use $PKG_CONFIG, when set, to find the pkg-config binary (#7469, fixes #2572, @anmonteiro)
Modules that were declared in (modules_without_implementation), (private_modules) or (virtual_modules) but not declared in (modules) will cause Dune to emit a warning which will become an error in 3.11. (#7608, fixes #7026, @Alizter)
Preliminary support for Coq compiled intefaces (.vos files) enabled via (mode vos) in coq.theory stanzas. This can be used in combination with dune coq top to obtain fast re-building of dependencies (with no checking of proofs) prior to stepping into a file. (#7406, @rlepigre)
Fix dune crashing on MacOS in watch mode whenever $PATH contains $PWD (#7441, fixes #6907, @rgrinberg)
Fix dune install when cross compiling (#7410, fixes #6191, @anmonteiro, @rizo)
Find pps dependencies in the host context when cross-compiling, (#7415, fixes #4156, @anmonteiro)
Dune in watch mode no longer builds concurrent rules in serial (#7395 @rgrinberg, @jchavarri)
Dune can now detect Coq theories from outside the workspace. This allows for composition with installed theories (not necessarily installed with Dune). (#7047, @Alizter, @ejgallego)
dune coq top now correctly respects the project root when called from a subdirectory. However, absolute filenames passed to dune coq top are no longer supported (due to being buggy) (#7357, fixes #7344, @rlepigre and @Alizter)
Added a --no-build option to dune coq top for avoiding rebuilds (#7380, fixes #7355, @Alizter)
RPC: Ignore SIGPIPE when clients suddenly disconnect (#7299, #7319, fixes #6879, @rgrinberg)
Always clean up the UI on exit. (#7271, fixes #7142 @rgrinberg)
Bootstrap: remove reliance on shell. Previously, we'd use the shell to get the number of processors. (#7274, @rgrinberg)
Bootstrap: correctly detect the number of processors by allowing nproc to be looked up in $PATH (#7272, @Alizter)
Speed up file copying on macos by using clonefile when available (@rgrinberg, #7210)
Adds support for loading plugins in toplevels (#6082, fixes #6081, @ivg, @richardlford)
Support commands that output 8-bit and 24-bit colors in the terminal (#7188, @Alizter)
Speed up rule generation for libraries and executables with many modules (#7187, @jchavarri)
Add --watch-exclusions to Dune build options (#7216, @jonahbeckford)
Do not re-render UI on every frame if the UI doesn't change (#7186, fix #7184, @rgrinberg)
Make coq_db creation in scope lazy (@ejgallego, #7133)
Non-user proccesses such as version control or config checking are now run silently. (#6994, fixes #4066, @Alizter)
Add the --display-separate-messages flag to separate the error messages produced by commands with a blank line. (#6823, fixes #6158, @esope)
Accept the Ordered Set Language for the modes field in library stanzas (#6611, @anmonteiro).
dune install now respects --display quiet mode (#7116, fixes #4573, fixes #7106, @Alizter)
Stub shared libraries (dllXXX_stubs.so) in Dune-installed libraries could not be used as dependencies of libraries in the workspace (eg when compiling to bytecode and/or Javascript). This is now fixed. (#7151, @nojb)
Allow the main module of a library with (stdlib ...) to depend on other libraries (#7154, @anmonteiro).
Bytecode executables built for JSOO are linked with -noautolink and no longer depend on the shared stubs of their dependent libraries (#7156, @nojb)
Added a new user action (concurrent ) which is like (progn ) but runs the actions concurrently. (#6933, @Alizter)
Allow (stdlib ...) to be used with (wrapped false) in library stanzas (#7139, @anmonteiro).
Allow parallel execution of inline tests partitions (#7012, @hhugo)
Support (link_flags ...) in (cinaps ...) stanza. (#7423, fixes #7416, @nojb)
Allow (package ...) in any position within (rule ...) stanza (#7445, @Leonidas-from-XIV)
Always include opam files in the generated .install file. Previously, it would not be included whenever (generate_opam_files true) was set and the .install file wasn't yet generated. (#7547, @rgrinberg)
Fix regression where Merlin was unable to handle filenames with uppercase letters under Windows. (#7577, @nojb)
On nix+macos, pass -f to the codesign hook to avoid errors when the binary is already signed (#7183, fixes #6265, @greedy)
Fix bug where RPC clients built with dune-rpc-lwt would crash when closing their connection to the server (#7581, @gridbugs)
Introduce mdx stanza 0.4 requiring mdx >= 2.3.0 which updates the default list of files to include *.mld files (#7582, @Leonidas-from-XIV)
Fix RPC server on Windows (used for OCaml-LSP). (#7666, @nojb)
Coq language versions less 0.8 are deprecated, and will be removed in an upcoming Dune version. All users are required to migrate to (coq lang 0.8) which provides the right semantics for theories that have been globally installed, such as those coming from opam (@ejgallego, @Alizter)
Bump minimum version of the dune language for the melange syntax extension from 3.7 to 3.8 (#7665, @jchavarri)

3.7.1 (2023-04-04)

Fix segfault on MacOS when dune was being shutdown while in watch mode. (#7312, fixes #6151, @gridbugs, @emillon)
Fix preludes not being recorded as dependencies in the (mdx) stanza (#7109, fixes #7077, @emillon).
Pass correct flags when compiling stdlib.ml. (#7241, @emillon)
Handle "Too many links" errors when using Dune cache on Windows. The fix in 3.7.0 for this same issue was not effective due to a typo. (#7472, @nojb)
In (executable), (public_name -) is now equivalent to no (public_name). This is consistent with how (executables) handles this field. (#7576 , fixes #5852, @emillon)
Change directory of odoc assets to odoc.support (was _odoc_support) so that it works with Github Pages out of the box. (#7588, fixes #7364, @emillon)

3.7.0 (2023-02-17)

Allow running $ dune exec in watch mode (with the -w flag). In watch mode, $ dune exec the executed binary whenever it is recompiled. (#6966, @gridbugs)
coqdep is now called once per theory, instead of one time per Coq file. This should significantly speed up some builds, as coqdep startup time is often heavy (#7048, @Alizter, @ejgallego)
Add map_workspace_root dune-project stanza to allow disabling of mapping of workspace root to /workspace_root. (#6988, fixes #6929, @richardlford)
Fix handling of support files generated by odoc. (#6913, @jonludlam)
Fix parsing of OCaml errors that contain code excerpts with ... in them. (#7008, @rgrinberg)
Pre-emptively clear screen in watch mode (#6987, fixes #6884, @rgrinberg)
Fix cross compilation configuration when a context with targets is itself a host of another context (#6958, fixes #6843, @rgrinberg)
Fix parsing of the <= operator in blang expressions of dune files. Previously, the operator would be interpreted as <. (#6928, @tatchi)
Fix --trace-file output. Dune now emits a single complete event for every executed process. Unterminated async events are no longer written. (#6892, @rgrinberg)
Fix preprocessing with staged_pps (#6748, fixes #6644, @rgrinberg)
Use colored output with MDX when Dune colors are enabled. (#6462, @MisterDA)
Make dune describe workspace return consistent dependencies for executables and for libraries. By default, compile-time dependencies towards PPX-rewriters are from now not taken into account (but runtime dependencies always are). Compile-time dependencies towards PPX-rewriters can be taken into account by providing the --with-pps flag. (#6727, fixes #6486, @esope)
Print missing newline after $ dune exec. (#6821, fixes #6700, @rgrinberg, @Alizter)
Fix binary corruption when installing or promoting in parallel (#6669, fixes #6668, @edwintorok)
Use colored output with GCC and Clang when compiling C stubs. The flag -fdiagnostics-color=always is added to the :standard set of flags. (#4083, @MisterDA)
Fix the parsing of decimal and hexadecimal escape literals in dune, dune-package, and other dune s-expression based files (#6710, @shym)
Report an error if dune init ... would create a "dune" file in a location which already contains a "dune" directory (#6705, @gridbugs)
Fix the parsing of alerts. They will now show up in diagnostics correctly. (#6678, @rginberg)
Fix the compilation of modules generated at link time when implicit_transitive_deps is enabled (#6642, @rgrinberg)
Allow $ dune utop to load libraries defined in data only directories defined using (subdir ..) (#6631, @rgrinberg)
Format dune files when they are named dune-file. This occurs when we enable the alternative file names project option. (#6566, @rgrinberg)
Move $ dune ocaml-merlin -dump-config=$dir to $ dune ocaml merlin dump-config $dir. (#6547, @rgrinberg)
Allow compilation rules to be impacted by (env ..) stanzas that modify the environment or set binaries. (#6527, @rgrinberg)
Coq native mode is now automatically detected by Dune starting with Coq lang 0.7. (mode native) has been deprecated in favour of detection from the configuration of Coq. (#6409, @Alizter)
Print "Leaving Directory" whenever "Entering Directory" is printed. (#6419, fixes #138, @cpitclaudel, @rgrinberg)
Allow $ dune ocaml dump-dot-merlin to run in watch mode. Also this command shouldn't print "Entering Directory" mesages. (#6497, @rgrinberg)
dune clean should no longer fail under Windows due to the inability to remove the .lock file. Also, bring the implementation of the global lock under Windows closer to that of Unix. (#6523, @nojb)
Remove "Entering Directory" messages for $ dune install. (#6513, @rgrinberg)
Stop passing -q flag in dune coq top, which allows for .coqrc to be loaded. (#6848, fixes #6847, @Alizter)
Fix missing dependencies when detecting the kind of C compiler we're using (#6610, fixes #6415, @emillon)
Allow (include_subdirs qualified) for OCaml projects. (#6594, fixes #1084, @rgrinberg)
Accurately determine merlin configuration for all sources selected with copy# and copy_files#. The old heuristic of looking for a module in parent directories is removed (#6594, @rgrinberg)
Fix inline tests with js_of_ocaml and whole program compilation mode enabled (#6645, @hhugo)
Fix js_of_ocaml separate compilation rules when --enable=effects ,--enable=use-js-string or --toplevel is used. (#6714, #6828, #6920, @hhugo)
Fix js_of_ocaml separate compilation in presence of linkall (#6832, #6916, @hhugo)
Remove spurious build dir created when running dune init proj ... (#6707, fixes #5429, @gridbugs)
Allow --sandbox to affect ocamldep invocations. Previously, they were wrongly marked as incompatible (#6749, @rgrinberg)
Validate the command line arguments for $ dune ocaml top-module. This command requires one positional argument (#6796, fixes #6793, @rgrinberg)
Add a dune cache size command for displaying the size of the cache (#6638, @Alizter)
Fix dependency cycle when installing files to the bin section with glob_files (#6764, fixes #6708, @gridbugs)
Handle "Too many links" errors when using Dune cache on Windows (#6993, @nojb)
Allow the cinaps stanza to set a custom alias. By default, if the alias is not set then the cinaps actions will be attached to both @cinaps and @runtest (#6991, @rgrinberg)
Add (using ctypes 0.3). When used, paths in (ctypes) are interpreted relative to where the stanza is defined. (#6883, fixes #5325, @emillon)
Auto-detect dune-workspace files as dune files in Emacs (#7061, @ilankri)
Add native support for polling mode on Windows (#7010, @yams-yams, @nojb)
Add (bin_annot <bool>) to (env ...) to specify whether to generate *.cmt* files. (#7102, @nojb)

3.6.2 (2022-12-21)

Fix configurator when using the MSVC compiler (#6538, fixes #6537, @nojb)
Fix running the RPC server on windows (#6721 fixes #6720, @rgrinberg)

3.6.1 (2022-11-24)

Fix status line enabled when ANSI colors are forced. (#6503, @MisterDA)
Fix build with MSVC compiler (#6517, @nojb)
Do not shadow library interface modules (#6549, fixes #6545, @rgrinberg)

3.6.0 (2022-11-14)

Forbid multiple instances of dune running concurrently in the same workspace. (#6360, fixes #236, @rgrinberg)
Allow promoting into source directories specified by subdir (#6404, fixes #3502, @rgrinberg)
Make dune describe workspace return the correct root path (#6380, fixes #6379, @esope)
Introduce a $ dune ocaml top-module subcommand to load modules directly without sealing them behind the signature. (#5940, @rgrinberg)
[ctypes] do not mangle user written names in the ctypes field (#6374, fixes #5561, @rgrinberg)
Support CLICOLOR and CLICOLOR_FORCE to enable/disable/force ANSI colors. (#6340, fixes #6323, @MisterDA).
Forbid private libraries with (package ..) set from depending on private libraries that don't belong to a package (#6385, fixes #6153, @rgrinberg)
Allow Byte_complete binaries to be installable (#4873, @AltGr, @rgrinberg)
Revive $ dune external-lib-deps under $ dune describe external-lib-deps. (#6045, @moyodiallo)
Fix running inline tests in bytecode mode (#5622, fixes #5515, @dariusf)
[ctypes] always re-run pkg-config because we aren't tracking its external dependencies (#6052, @rgrinberg)
[ctypes] remove dependency on configurator in the generated rules (#6052, @rgrinberg)
Build progress status now shows number of failed jobs (#6242, @Alizter)
Allow absolute build directories to find public executables. For example, those specified with (deps %{bin:...}) (#6326, @anmonteiro)
Create a fake socket file _build/.rpc/dune on windows to allow rpc clients to connect using the build directory. (#6329, @rgrinberg)
Prevent crash if absolute paths are used in the install stanza and in recursive globs. These cases now result in a user error. (#6331, @gridbugs)
Add (glob_files <glob>) and (glob_files_rec <glob>) terms to the files field of the install stanza (#6250, closes #6018, @gridbugs)
Allow :standard in the (modules) field of the coq.pp stanza (#6229, fixes #2414, @Alizter)
Fix passing of flags to dune coq top (#6369, fixes #6366, @Alizter)
Extend the promotion CLI to a dune promotion group: dune promote is moved to dune promotion apply (the former still works) and the new dune promotion diff command can be used to just display the promotion without applying it. (#6160, fixes #5368, @emillon)

3.5.0 (2022-10-19)

macOS: Handle unknown fsevents without crashing (#6217, @rgrinberg)
Enable file watching on MacOS SDK < 10.13. (#6218, @rgrinberg)
Sandbox running cinaps actions starting from cinaps 1.1 (#6176, @rgrinberg)
Add a runtime_deps field in the cinaps stanza to specify runtime dependencies for running the cinaps preprocessing action (#6175, @rgrinberg)
Shadow alias module Foo__ when building a library Foo (#6126, @rgrinberg)
Extend dune describe to include the root path of the workspace and the relative path to the build directory. (#6136, @reubenrowe)
Allow dune describe workspace to accept directories as arguments. The provided directories restrict the worskpace description to those directories. (#6107, fixes #3893, @esope)
Add a terminal persistence mode that attempts to clear the terminal history. It is enabled by setting terminal persistence to clear-on-rebuild-and-flush-history (#6065, @rgrinberg)
Disallow generating targets in sub directories in inferred rules. The check to forbid this was accidentally done only for manually specified targets (#6031, @rgrinberg)
Do not ignore rules marked (promote (until-clean)) when --ignore-promoted-rules (or -p) is passed. (#6010, fixes #4401, @emillon)
Dune no longer considers .aux files as targets during Coq compilation. This means that .aux files are no longer cached. (#6024, fixes #6004, @alizter)
Cinaps actions are now sandboxed by default (#6062, @rgrinberg)
Allow rules producing directory targets to be not sandboxed (#6056, @rgrinberg)
Introduce a dirs field in the install stanza to install entire directories (#5097, fixes #5059, @rgrinberg)
Menhir rules are now sandboxed by default (#6076, @rgrinberg)
Allow rules producing directory targets to create symlinks (#6077, fixes #5945, @rgrinberg)
Inline tests are now sandboxed by default (#6079, @rgrinberg)
Fix build-info version when used with flambda (#6089, fixes #6075, @jberdine)
Add an (include <file>) term to the include_dirs field for adding directories to the include paths sourced from a file. (#6058, fixes #3993, @gridbugs)
Support (extra_objects ...) field in (executable ...) and (library ...) stanzas (#6084, fixes #4129, @gridbugs)
Fix compilation of Dune under esy on Windows (#6109, fixes #6098, @nojb)
Improve error message when parsing several licenses in (license) (#6114, fixes #6103, @emillon)
odoc rules now about ODOC_SYNTAX and will rerun accordingly (#6010, fixes #1117, @emillon)
dune install: copy files in an atomic way (#6150, @emillon)
Add %{coq:...} macro for accessing data about the configuration about Coq. For instance %{coq:version} (#6049, @Alizter)
update vendored copy of cmdliner to 1.1.1. This improves the built-in documentation for command groups such as dune ocaml. (#6038, @emillon, #6169, @shonfeder)
The test suite for Coq now requires Coq >= 8.16 due to changes in the plugin loading mechanism upstream (which now uses Findlib).
Starting with Coq build language 0.6, theories can be built without importing Coq's standard library by including (stdlib no). (#6165 #6164, fixes #6163, @ejgallego @Alizter @LasseBlaauwbroek)
on macOS, sign executables produced by artifact substitution (#6137, #6231, fixes #5650, fixes #6226, @emillon)
Added an (aliases ...) field to the (rules ...) stanza which allows the specification of multiple aliases per rule (#6194, @Alizter)
The (coq.theory ...) stanza will now ensure that for each declared (plugin ...), the META file for it is built before calling coqdep. This enables the use of the new Findlib-based loading method in Coq 8.16; however as of Coq 8.16.0, Coq itself has some bugs preventing this to work yet. (#6167 , workarounds #5767, @ejgallego)
Allow include statement in install stanza (#6139, fixes #256, @gridbugs)
Handle CSI n K code in ANSI escape codes from commands. (#6214, fixes #5528, @emillon)
Add a new experimental feature mode_specific_stubs that allows the specification of different flags and sources for foreign stubs depending on the build mode (#5649, @voodoos)

3.4.1 (26-07-2022)

Fix build on cygwin/i686-w64-mingw32 (#6008, @kit-ty-kate)

3.4.0 (20-07-2022)

Do not ignore C-c when running $ dune subst (#5892, @rgrinberg)
Make dune describe correctly handle overlapping implementations for virtual libraries (#5971, fixes #5747, @esope)
Building the @check alias should make sure the libraries and executables don't have dependency cycles (#5892, @rgrinberg)
[ctypes] Add support for the errno parameter using the errno_policy field in the ctypes settings. (#5827, @droyo)
Fix dune coq top when it is invoked on files from a subdirectory of the directory containing the associated stanza (#5784, fixes #5552, @ejgallego, @rlepigre, @Alizter)
Fix hint when an invalid module name is found. (#5922, fixes #5273, @emillon)
The (cat) action now supports several files. (#5928, fixes #5795, @emillon)
Dune no longer uses shimmed META files for OCaml 5.x, solely using the ones installed by the compiler. (#5916, @dra27)
Fix handling of the (deps) field in (test) stanzas when there is an .expected file. (#5952, #5951, fixes #5950, @emillon)
Ignore insignificant filesystem events. This stops RPC in watch mode from flashing errors on insignificant file system events such as changes in the .git/ directory. (#5953, @rgrinberg)
Fix parsing more error messages emitted by the OCaml compiler. In particular, messages where the excerpt line number started with a blank character were skipped. (#5981, @rgrinberg)
env stanza: warn if some rules are ignored because they appear after a wildcard rule. (#5898, fixes #5886, @emillon)
On Windows, XDG_CACHE_HOME is taken to be the FOLDERID_InternetCache if unset, and XDG_CONFIG_HOME and XDG_DATA_HOME are both taken to be FOLDERID_LocalAppData if unset. (#5943, fixes #5808, @nojb)

3.3.1 (19-06-2022)

Improve parsing of ocamlc errors. We now correctly strip excerpts and parse alerts (#5879, @rgrinberg)
The (libraries) field of the coq.theory stanza has been renamed to (plugins) and the Coq language version has been bumped to 0.5.

3.3.0 (17-06-2022)

Sandbox preprocessing, lint, and dialect rules by default. All these rules now require precise dependency specifications (#5807, @rgrinberg)
Allow list expansion in the pps specification for preprocessing (#5820, @Firobe)
Add warnings 67-69 to dune's default set of warnings. These are warnings of the form "unused X.." (#5844, @rgrinbreg)
Introduce project "composition" for coq theories. Coq theories in separate projects can now refer to each other when in the same workspace (#5784, @Alizter, @rgrinberg)
Fix hint message for data_only_dirs that wrongly mentions the unknown constructor data_only (#5803, @lambdaxdotx)
Fix creating sandbox directory trees by getting rid of buggy memoization (@5794, @rgrinberg, @snowleopard)
Handle directory dependencies in sandboxed rules. Previously, the parents of these directory dependencies weren't created. (#5754, @rgrinberg)
Set the exit code to 130 when dune is terminated with a signal (#5769, fixes #5757)
Support new locations of unix, str, dynlink in OCaml >= 5.0 (#5582, @dra27)
The coq.theory stanza now produces rules for running coqdoc. Given a theory named mytheory, the directory targets mytheory.html/ and mytheory.tex/ or additionally the aliases @doc and @doc-latex will build the HTML and LaTeX documentation respectively. (#5695, fixes #3760, @Alizter)
Coq theories marked as (boot) cannot depend on other theories (#5867, @ejgallego)
Ignore bigarray in (libraries) with OCaml >= 5.0. (#5526, fixes #5494, @moyodiallo)
Start with :standard when building the ctypes generated foreign stubs so that we include important compiler flags, such as -fPIC (#5816, fixes #5809).

3.2.0 (17-05-2022)

Fixed dune describe workspace --with-deps so that it correctly handles Reason files, as well as files any other dialect. (#5701, @esope)
Disable alerts when compiling code in vendored directories (#5683, @NathanReb)
Fixed dune describe --with-deps, that crashed when some preprocessing was required in a dune file using per_module. (#5682, fixes #5680, @esope)
Add $ dune describe pp to print the preprocssed ast of sources. (#5615, fixes #4470, @cannorin)
Report dune file evaluation errors concurrently. In the same way we report build errors. (#5655, @rgrinberg)
Watch mode now default to clearing the terminal on rebuild (#5636, fixes, #5216, @rgrinberg)
The output of jobs that finished but were cancelled is now omitted. (#5631, fixes #5482, @rgrinberg)
Allows to configure all the default destination directories with ./configure (adds bin, sbin, data, libexec). Use OPAM_SWITCH_PREFIX instead of calling the opam binaries in dune install. Fix handling of multiple libdir in ./configure for handling /usr/lib/ocaml/ and /usr/local/lib/ocaml. In dune install forbid relative directories in libdir, docdir and others specific directory setting because their handling was inconsistent (#5516, fixes #3978 and #5455, @bobot)
--terminal-persistence=clear-on-rebuild will no longer destroy scrollback on some terminals (#5646, @rgrinberg)
Add a fmt command as a shortcut of dune build @fmt --auto-promote (#5574, @tmattio)
Watch mode now tracks copied external files, external directories for dependencies, dune files in OCaml syntax, files used by include stanzas, dune-project, opam files, libraries builtin with compiler, and foreign sources (#5627, #5645, #5652, #5656, #5672, #5691, #5722, fixes #5331, @rgrinberg)
Improve metrics for cram tests. Include test names in the event and add a category for cram tests (#5626, @rgrinberg)
Allow specifying multiple licenses in project file (#5579, fixes #5574, @liyishuai)
Match glob_files only against files in external directories (#5614, fixes #5540, @rgrinberg)
Add pid's to chrome trace output (#5617, @rgrinberg)
Fix race when creating local cache directory (#5613, fixes #5461, @rgrinberg)
Add not to boolean expressions (#5610, fix #5503, @rgrinberg)
Fix relative dependencies outside the workspace (#4035, fixes #5572, @bobot)
Allow to specify --prefix via the environment variable DUNE_INSTALL_PREFIX (#5589, @vapourismo)
Dune-site.plugin: add support for archive(native|byte, plugin) used in the wild before findlib documented plugin(native|byte) in 2015 (#5518, @bobot)
Fix a bug where Dune would not correctly interpret META files in alternative layout (ie when the META file is named META.$pkg). The Llvm bindings were affected by this issue. (#5619, fixes #5616, @nojb)
Support (binaries) in (env) in dune-workspace files (#5560, fix #5555, @emillon)
(mdx) stanza: add support for (locks). (#5628, fixes #5489, @emillon)
(mdx) stanza: support including files in different directories using relative paths, and provide better error messages when paths are invalid (#5703, #5704, fixes #5596, @emillon)
Fix ctypes rules for external lib names which aren't valid ocaml names (#5667, fixes #5511, @Khady)

3.1.1 (19/04/2022)

Fix build on Cygwin. (#5593, fixes 5577, @nojb)
Fix execution of (system ..) actions on Windows. (#5593, fixes #5523, @nojb)

3.1.0 (15/04/2022)

Add sourcehut as an option for defining project sources in dune-project files. For example, (source (sourcehut user/repo)). (#5564, @rgrinberg)
Add dune coq top command for running a Coq toplevel (#5457, @rlepigre)
Fix dune exec dumping database in wrong directory (#5544, @bobot)
Always output absolute paths for locations in RPC reported diagnostics (#5539, @rgrinberg)
Add (deps <deps>) in ctype field (#5346, @bobot)
Add (include <file>) constructor to dependency specifications. This can be used to introduce dynamic dependencies (#5442, @anmonteiro)
Ensure that dune describe computes a transitively closed set of libraries (#5395, @esope)
Add direct dependencies to $ dune describe output (#5412, @esope)
Show auto-detected concurrency on Windows too (#5502, @MisterDA)
Fix operations that remove folders with absolute path. This happens when using esy (#5507, @EduardoRFS)
Dune will not fail if some directories are non-empty when uninstalling. (#5543, fixes #5542, @nojb)
coqdep now depends only on the filesystem layout of the .v files, and not on their contents (#5547, helps with #5100, @ejgallego)
The mdx stanza 0.2 can now be used with (implicit_transitive_deps false) (#5558, fixes #5499, @emillon)
Fix missing parenthesis in printing of corresponding terminal command for (with-outputs-to ) (#5551, fixes #5546, @Alizter)

3.0.3 (01/03/2022)

Do not enable warnings 63-70 by default (#5476, fixes #5464, @rgrinberg)
Allow %{read-lines} to introduce dynamic dependencies like %{read}. (#5440, @anmonteiro)
Look up gmake before make (#5474, fixes #5470, @rgrinberg)
Handle empty output from getconf (#5473 fixes #5471, @mndrix)
Depend on any provided foreign_archives for ctypes stub generation (#5475, @mbacarella)

3.0.2 (17/02/2022)

Fix digest computation bug introduced in 3.0.1 (#5451, @rgrinberg)

3.0.1 (17/02/2022)

Fix compilation on MacOS SDK < 10.13. The native watch mode is disabled in such instances (#5431 fix #5430, @rgrinberg)
Do no add workspace_root to BUILD_PATH_PREFIX_MAP for projects before 3.0 (5448, @rgrinberg)
Fix performance regression in incremental builds (#5439, @snowleopard)

3.0.0 (11/02/2022)

Remove uchar and seq dummy ocamlfind libraries from dune's builtin library database (#5260, @kit-ty-kate)
Add a DUNE_DIFF_COMMAND environment variable to match --diff-command command-line parameter (@raphael-proust, fix #5369, #5375)
Add support for odoc-link rules (#5045, @jonludlam, @lubegasimon)
Dune will no longer generate documentation for hidden modules (#5045, @jonludlam, @lubegasimon)
Parse the native_pack_linker field of ocamlc -config (#5281, @TheLortex)
Fix plugins with dot in the name (#5182, @bobot, review @rgrinberg)
Don't generate the dune-site build part when not needed (#4861, @bobot, review @kit-ty-kate)
Fix installation of implementations of virtual libraries (#5150, fix #3636, @rgrinberg)
Run tests in all modes defined. Previously, jsoo was excluded. (@hhugo, #5049, fix #4951)
Allow to configure the alias to run the jsoo tests (@hhugo, #5049, #4999)
Set jsoo compilation flags in the env stanza (@hhugo, #5049, #1613)
Allow to configure jsoo separate compilation in the env stanza. Previously, it was hard coded to always be enabled in the dev profile. (@hhugo, #5049, fix #970)
Fix build-info version in jsoo executables (@hhugo, #5049, fix #4444)
Pass -no-check-prims when building bytecode for jsoo (@hhugo, #5049, #4027)
Fix jsoo builds when dynamically linked foreign archives are disabled (@hhugo, #5049)
Disallow empty packages starting from 3.0. Empty packages may be re-enabled by adding the (allow_empty) to the package stanza in the dune-project file. (#4867, fix #2882, @kit-ty-kate, @rgrinberg)
Add link_flags field to the executable field of inline_tests (#5088, fix #1530, @jvillard)
In watch mode, use fsevents instead of fswatch on OSX (#4937, #4990, fixes #4896 @rgrinberg)
Remove inotifywait watch mode backend on Linux. We now use the inotify API exclusively (#4941, @rgrinberg)
Report cycles between virtual libraries and their implementation (#5050, fixes #2896, @rgrinberg)
Warn when lang versions have an ignored suffix. (lang dune 2.3.4) or (lang dune 2.3suffix) were silently parsed as 2.3 and we know suggest to remove the prefix. (#5040, @emillon)
Allow users to specify dynamic dependencies in rules. For example (deps %{read:foo.gen}) (#4662, fixes #4089, @jeremiedimino)
Sandbox infer rules for menhir. Fixes possible "inconsistent assumptions" errors (#5015, @rgrinberg)
Experimental support for ctypes stubs (#3905, fixes #135, @mbacarella)
Fix interpretation of binaries defined in the env stanza. Binaries defined in x/dune wouldn't be visible in `x/*/**/dune. (#4975, fixes #4976, @Leonidas-from-XIV, @rgrinberg)
Do not list private libraries in package listings (#4945, fixes #4799, @rgrinberg)
Allow spaces in cram test paths (#4980, fixes #4162, @rgrinberg)
Improve error handling of misbehaving cram scripts. (#4981, fix #4230, @rgrinberg)
Fix foreign_stubs inside a tests stanza. Previously, dune would crash when this field was present (#4942, fix #4946, @rgrinberg)
Add the enabled_if field to inline_tests within the library stanza. This allows us to disable executing the inline tests while still allowing for compilation (#4939, @rgrinberg)
Generate a dune-project when initializing projects with dune init proj ... (#4881, closes #4367, @shonfeder)
Allow spaces in the directory argument of the subdir stanza (#4943, fixes #4907, @rgrinberg)
Add a %{toolchain} expansion variable (#4899, fixes #3949, @rgrinberg)
Include dependencies of executables when creating toplevels (either dune top or dune utop) (#4882, fixes #4872, @Gopiancode)
Fixes opam META file requires entry for private libs (#4841, fixes #4839, @toots)
Fixes dune exec not adding .exe on Windows (#4371, fixes #3322, @MisterDA)
Allow multiple cinaps stanzas in the same directory (#4460, @rgrinberg)
Fix $ dune subst in empty git repositories (#4441, fixes #3619, @rgrinberg)
Improve interpretation of ansi escape sequence when spawning processes (#4408, fixes #2665, @rgrinberg)
Allow (package pkg) in dependencies even if pkg is an installed package (#4170, @bobot)
Allow %{version:pkg} to work for external packages (#4104, @kit-ty-kate)
Add (glob_files_rec <dir>/<glob>) for globbing files recursively (#4176, @jeremiedimino)
Automatically generate empty .mli files for executables and tests (#3768, fixes #3745, @CraigFe)
Add ocaml command subgroup for OCaml related commands such as utop, top, and merlin (#3936, @rgrinberg).
Detect unknown variables more eagerly (#4184, @jeremiedimino)
Improve location of variables and macros in error messages (#4205, @jeremiedimino)
Auto-detect dune-project files as dune files in Emacs (#4222, @shonfeder)
Dune no longer automatically create or edit dune-project files (#4239, fixes #4108, @jeremiedimino)
Warn if dune-project is not found (fatal in release mode) (#5343, @emillon)
Cleanup temporary files after running $ dune exec. (#4260, fixes #4243, @rgrinberg)
Add a new subcommand dune ocaml dump-dot-merlin that prints a mix of all the merlin configuration of a directory (defaulting to the current directory) in the Merlin configuration syntax. (#4250, @voodoos)
Enable cram tests by default (#4262, @rgrinberg)
Drop support for opam 1.x (#4280, @jeremiedimino)
Stop calling ocamlfind to determine the library search path or library installation directory. This makes the behavior of Dune simpler and more reproducible (#4281, @jeremiedimino)
Remove the external-lib-deps command. This command was only approximative and the cost of maintenance was getting too high. We removed it to make room for new more important features (#4298, @jeremiedimino)
It is now possible to define action dependencies through a chain of aliases. (#4303, @aalekseyev)
If an .ml file is not used by an executable, Dune no longer report parsing error in this file (#4330, @jeremiedimino)
Add support for sandboxing using hard links (#4360, Andrey Mokhov)
Fix dune crash when subdir is an absolute path (#4366, @anmonteiro)
Changed the implementation of actions attached to aliases, as in (rule (alias runtest) (action (run ./test))). A visible result for users is that such actions are now memoized for longer. For instance:
```
$ echo '(rule (alias runtest) (action (echo "X=%{env:X=0}\n")))` > dune
$ X=1 dune runtest
X=1
$ X=2 dune runtest
X=2
$ X=1 dune runtest
```
Previously, Dune would have re-executed the action again at the last line. Now it remembers the result of the first execution.
Fix a bug where dune would always re-run all actions that produce symlinks, even if their dependencies did not change. (#4405, @aalekseyev)
Fix a bug that was causing Dune to re-hash generated files more often than necessary (#4419, @jeremiedimino)
Fields allowed in the config file are now also allowed in the workspace file (#4426, @jeremiedimino)
Add CLI flags --action-<outputs>-on-success ... (where <outputs> is stdout or stderr) to control how Dune should handle stdout and stderr of actions when they succeed. It is now possible to ask Dune to ignore the stdout of actions when they succeed or to request that the stderr of actions must be empty. It is also possible to set these options in the config and/or dune-workspace files with (action_<outputs>_on_success ...). This feature allows you to reduce the noise of large builds (#4422, #4515, @jeremiedimino)
The @all alias no longer depends directly on copies of files from the source directory (#4461, @nojb)
Allow dune-file as an alternative file name for dune files (needs to be enabled in the dune-project file) (#4428, @nojb)
Drop support for upgrading jbuilder projects (#4473, @jeremiedimino)
Extend the environment variable BUILD_PATH_PREFIX_MAP to rewrite the root of the build dir (or sandbox) to /workspace_root (#4466, @jeremiedimino)
Simplify the implementation of build cache. We stop using the cache daemon to access the cache and instead write to and read from it directly. The new cache implementation is based on Jenga's cache library, which was thoroughly tested on large-scale builds. Using Jenga's cache library will also make it easier for us to port Jenga's cloud cache to Dune. (#4443, #4465, Andrey Mokhov)
More informative error message when Dune can't read a target that's supposed to be produced by the action. Old message is still produced on ENOENT, but other errors deserve a more detailed report. (#4501, @aalekseyev)
Fixed a bug where a sandboxed action would fail if it declares no dependencies in its initial working directory or any directory it chdirs into. (#4509, @aalekseyev)
Fix a crash when clearing temporary directories (#4489, #4529, Andrey Mokhov)
Dune now memoizes all errors when running in the file-watching mode. This speeds up incremental rebuilds but may be inconvenient in rare cases, e.g. if a build action fails due to a spurious error, such as running out of memory. Right now, the only way to force such actions to be rebuilt is to restart Dune, which clears all memoized errors. In future, we would like to provide a way to rerun all actions failed due to errors without restarting the build, e.g. via a Dune RPC call. (#4522, Andrey Mokhov)
Remove dune compute. It was broken and unused (#4540, @jeremiedimino)
No longer generate an approximate merlin files when computing the ocaml flags fails, for instance because they include the contents of a file that failed to build. This was a niche feature and it was getting in the way of making Dune's core better. (#4607, @jeremiedimino)
Make Dune display the progress indicator in all output modes except quiet (#4618, @aalekseyev)
Report accurate process timing information in trace mode (enabled with --trace-file) (#4517, @rgrinberg)
Do not log live_words and free_words in trace file. This allows using Gc.quick_stat which does not scan the heap. (#4643, @emillon)
Don't let command run by Dune observe the environment variable INSIDE_EMACS in order to improve reproducibility (#4680, @jeremiedimino)
Fix root_module when used in public libraries (#4685, fixes #4684, @rgrinberg, @CraigFe)
Fix root_module when used with preprocessing (#4683, fixes #4682, @rgrinberg, @CraigFe)
Display Coq profile flags in dune printenv (#4767, @ejgallego)
Introduce mdx stanza 0.2, requiring mdx >= 1.9.0, with a new generic deps field and the possibility to statically link libraries in the test executable. (#3956, #5391, fixes #3955)
Improve lookup of optional or disabled binaries. Previously, we'd treat every executable with missing libraries as optional. Now, we treat make sure to look at the library's optional or enabled_if status (#4786).
Always use 7 char hash prefix in build info version (#4857, @jberdine, fixes #4855)
Allow to explicitly disable/enable the use of dune subst by adding a new (subst <disable|enable>) stanza to the dune-project file. (#4864, @kit-ty-kate)
Simplify the way dune discovers the root of the workspace. It now stops at the first dune-workspace file it encounters, and fails if it finds neither a dune-workspace nor a dune-project file (#4921, fixes #4459, @jeremiedimino)
Dune no longer reads installed META files for libraries distributed with the compiler, instead using its own internal database. (#4946, @nojb)
Add support for (empty_module_interface_if_absent) in executable and library stanzas. (#4955, @nojb)
Add support for %{bin-available:...} (#4995, @jeremiedimino)
Make sure running git or hg in a sandboxed action, such as a cram test cannot escape the sandbox and pick up some random git or mercurial repository on the file system (#4996, @jeremiedimino)
Allow %{read:...} in more places such as (enabled_if ...) (#4994, @jeremiedimino)
Run each action in its own process group so that we don't leave stray processes behind when killing actions (#4998, @jeremiedimino)
Add an option expand_aliases_in_sandbox (#5003, @jeremiedimino)
Allow to cancel the initial scan via Control+C (#4460, fixes #4364 @jeremiedimino)
Add experimental support for directory targets (#3316, #5025, Andrey Mokhov), enabled via (using directory-targets 0.1) in dune-project.
Delete old promote-into, promote-until-clean and promote-until-clean-into syntax (#5091, Andrey Mokhov).
Add link_flags in the env stanza (#5215)
Bootstrap: ignore errors when trying to remove generated files. (#5407, @damiendoligez)

2.9.4 (unreleased)

Do not generate META information for bigarray library in OCaml >= 5.0 (#5421, @nojb)
Support new locations of unix, str, dynlink in OCaml >= 5.0 (#5582, @dra27)

2.9.3 (26/01/2022)

Disable warning for deprecated Toploop functions used in dune files written in OCaml syntax. Restores 4.02 compatibility. (#5381, @nojb)

2.9.2 (23/01/2022)

Fix missing -linkall flag when linking library dune-sites.plugin ( #4348, @kakadu, @bobot, reported by @kakadu)
No longer reference deprecated Toploop functions when using dune files in OCaml syntax. (#4834, fixes #4830, @nojb)
Use the stag format API to be compatible with OCaml 5.0 (#5351, @emillon).
Fix post-processing of dune-package (fix #4389, @strub)

2.9.1 (07/09/2021)

Don't use subst --root in Opam files (#4806, @MisterDA)
Fix compilation on Haiku (#4885, @Sylvain78)
Allow depending on ocamldoc library when ocamlfind is not installed. (#4811, fixes #4809, @nojb)
Fix (enabled_if ...) for installed libraries (#4824, fixes #4821, @dra27)
Create more future-proof opam files using --promote-install-files=false (#4860, @bobot)

2.9.0 (29/06/2021)

Add (enabled_if ...) to (mdx ...) (#4434, @emillon)
Add support for instrumentation dependencies (#4210, fixes #3983, @nojb)
Add the possibility to use locks with the cram tests stanza (#4397, @voodoos)
Allow to set up merlin in a variant of the default context (#4145, @TheLortex, @voodoos)
Add (package ...) to (mdx ...) (#4691, fixes #3756, @emillon)
Handle renaming of coq.kernel library to coq-core.kernel in Coq 8.14 (#4713, @proux01)
Fix generation of merlin configuration when using (include_subdirs unqualified) on Windows (#4745, @nojb)
Fix bug for the install of Coq native files when using (include_subdirs qualified) (#4753, @ejgallego)
Allow users to specify install target directories for doc and etc sections. We add new options --docdir and --etcdir to both Dune's configure and dune install command. (#4744, fixes #4723, @ejgallego, thanks to @JasonGross for reporting this issue)
Fix issue where Dune would ignore (env ... (coq (flags ...))) declarations appearing in dune files (#4749, fixes #4566, @ejgallego @rgrinberg)
Disable some warnings on Coq 8.14 and (lang coq (>= 0.3)) due to the rework of the Coq "native" compilation system (#4760, @ejgallego)
Fix a bug where instrumentation flags would be added even if the instrumentation was disabled (@nojb, #4770)
Fix #4682: option -p takes now precedence on environment variable DUNE_PROFILE (#4730, #4774, @bobot, reported by @dra27 #4632)
Fix installation with opam of package with dune sites. The .install file is now produced by a local dune install during the build phase (#4730, #4645, @bobot, reported by @kit-ty-kate #4198)
Fix multiple issues in the sites feature (#4730, #4645 @bobot, reported by @Lelio-Brun #4219, by @Kakadu #4325, by @toots #4415)

2.8.5 (28/03/2021)

Fixed absence of executable bit for installed .cmxs (#4149, fixes #4148, @bobot)
Fix a race in Dune cache. It was particularly easy to hit this race when using the cache on Windows (#4406, fixes #4167, @snowleopard)

2.8.4 (08/03/2021)

Fix crash when META file for compiler-libs.toplevel is present (@jeremiedimino, #4249)

2.8.3 (07/03/2021)

Make patdiff show refined diffs (#4257, fixes #4254, @hakuch)
Fixed a bug that could result in needless recompilation under Windows due to case differences in the result of Sys.getcwd (observed under emacs). (#3966, @nojb).
Restore compatibility with Coq < 8.10 for coq-lang < 0.3 , document that (using coq 0.3) does require Coq 8.10 at least (#4224, fixes #4142, @ejgallego)
Add a META rule for compiler-libs.native-toplevel (#4175, @altgr)
No longer call chmod on symbolic links (fixes #4195, @dannywillems)
Have dune communicate the location of the standard library directory to merlin (#4211, fixes #4188, @nojb)
Workaround incorrect exception raised by Unix.utimes (OCaml PR#8857) in Path.touch on Windows. This fixes dune cache in direct mode on Windows. (#4223, @dra27)
dune ocaml-merlin is now able to provide configuration for source files in the _build directory. (#4274, @voodoos)
Automatically delete left-over Merlin files when rebuilding for the first time a project previously built with Dune <= 2.7. (#4261, @voodoos, @aalekseyev)
Fix ppx.exe being compiled for the wrong target when cross-compiling (#3751, fixes #3698, @toots)
dune top correctly escapes the generated toplevel directives, and make it easier for dune top to locate C stubs associated to concerned libraries. (#4242, fixes #4231, @nojb)
Do not pass include directories containing native objects when compiling bytecode (#4200, @nojb)

2.8.2 (21/01/2021)

Fixed wrong workspace discovery from dune ocaml-merlin (#4127, fixes #4125, @voodoos)
Fixed memory blow up introduced in 2.8.0 (#4144, fixes #4134, @jeremiedimino)
Configurator: always link the C libraries in the build command (#4088, @MisterDA).

2.8.1 (14/01/2021)

Fixed dune --version printing n/a rather than the version

2.8.0 (13/01/2021)

dune rules accepts aliases and other non-path rules (#4063, @mrmr1993)
Action (diff reference test_result) now accept reference to be absent and in that case consider that the reference is empty. Then running dune promote will create the reference file. (#3795, @bobot)
Ignore special files (BLK, CHR, FIFO, SOCKET), (#3570, fixes #3124, #3546, @ejgallego)
Experimental: Simplify loading of additional files (data or code) at runtime in programs by introducing specific installation sites. In particular it allow to define plugins to be installed in these sites. (#3104, #3794, fixes #1185, @bobot)
Move all temporary files created by dune to run actions to a single directory and make sure that actions executed by dune also use this directory by setting TMPDIR (or TEMP on Windows). (#3691, fixes #3422, @rgrinberg)
Fix bootstrap script with custom configuration. (#3757, fixes #3774, @marsam)
Add the executable field to inline_tests to customize the compilation flags of the test runner executable (#3747, fixes #3679, @lubegasimon)
Add (enabled_if ...) to (copy_files ...) (#3765, @nojb)
Make sure Dune cleans up the status line before exiting (#3767, fixes #3737, @alan-j-hu)
Add {gitlab,bitbucket} as options for defining project sources with source stanza (source (<host> user/repo)) in the dune-project file. (#3813, @rgrinberg)
Fix generation of META and dune-package files when some targets (byte, native, dynlink) are disabled. Previously, dune would generate all archives for regardless of settings. (#3829, #4041, @rgrinberg)
Do not run ocamldep to for single module executables & libraries. The dependency graph for such artifacts is trivial (#3847, @rgrinberg)
Fix cram tests inside vendored directories not being interpreted correctly. (#3860, fixes #3843, @rgrinberg)
Add package field to private libraries. This allows such libraries to be installed and to be usable by other public libraries in the same project (#3655, fixes #1017, @rgrinberg)
Fix the %{make} variable on Windows by only checking for a gmake binary on UNIX-like systems as a unrelated gmake binary might exist on Windows. (#3853, @kit-ty-kate)
Fix $ dune install modifying the build directory. This made the build directory unusable when $ sudo dune install modified permissions. (fix #3857, @rgrinberg)
Fix handling of aliases given on the command line (using the @ and @@ syntax) so as to correctly handle relative paths. (#3874, fixes #3850, @nojb)
Allow link time code generation to be used in preprocessing executable. This makes it possible to use the build info module inside the preprocessor. (#3848, fix #3848, @rgrinberg)
Correctly call git ls-tree so unicode files are not quoted, this fixes problems with dune subst in the presence of unicode files. Fixes #3219 (#3879, @ejgallego)
dune subst now accepts common command-line arguments such as --debug-backtraces (#3878, @ejgallego)
dune describe now also includes information about executables in addition to that of libraries. (#3892, #3895, @nojb)
instrumentation backends can now receive arguments via (instrumentation (backend <name> <args>)). (#3906, #3932, @nojb)
Tweak auto-formatting of dune files to improve readability. (#3928, @nojb)
Add a switch argument to opam when context is not default. (#3951, @tmattio)
Avoid pager when running $ git diff (#3912, @AltGr)
Add (root_module ..) field to libraries & executables. This makes it possible to use library dependencies shadowed by local modules (#3825, @rgrinberg)
Allow (formatting ...) field in (env ...) stanza to set per-directory formatting specification. (#3942, @nojb)
[coq] In coq.theory, :standard for the flags field now uses the flags set in env profile flags (#3931 , @ejgallego @rgrinberg)
[coq] Add -q flag to :standard coqc flags , fixes #3924, (#3931 , @ejgallego)
Add support for Coq's native compute compilation mode (@ejgallego, #3210)
Add a SUFFIX directive in .merlin files for each dialect with no preprocessing, to let merlin know of additional file extensions (#3977, @vouillon)
Stop promoting .merlin files. Write per-stanza Merlin configurations in binary form. Add a new subcommand dune ocaml-merlin that Merlin can use to query the configuration files. The allow_approximate_merlin option is now useless and deprecated. Dune now conflicts with merlin < 3.4.0 and ocaml-lsp-server < 1.3.0 (#3554, @voodoos)
Configurator: fix a bug introduced in 2.6.0 where the configurator V1 API doesn't work at all when used outside of dune. (#4046, @aalekseyev)
Fix libexec and libexec-private variables. In cross-compilation settings, they now point to the file in the host context. (#4058, fixes #4057, @TheLortex)
When running $ dune subst, use project metadata as a fallback when package metadata is missing. We also generate a warning when (name ..) is missing in dune-project files to avoid failures in production builds.
Remove support for passing -nodynlink for executables. It was bypassed in most cases and not correct in other cases in particular on arm32. (#4085, fixes #4069, fixes #2527, @emillon)
Generate archive rules compatible with 4.12. Dune no longer attempts to generate an archive file if it's unnecessary (#3973, fixes #3766, @rgrinberg)
Fix generated Merlin configurations when multiple preprocessors are defined for different modules in the same folder. (#4092, fixes #2596, #1212 and #3409, @voodoos)
Add the option use_standard_c_and_cxx_flags to dune-project that 1. disables the unconditional use of the ocamlc_cflags and ocamlc_cppflags from ocamlc -config in C compiler calls, these flags will be present in the :standard set instead; and 2. enables the detection of the C compiler family and populates the :standard set of flags with common default values when building CXX stubs. (#3875, #3802, fix #3718 and #3528, @voodoos)

2.7.1 (2/09/2020)

configurator: More flexible probing of #define. We allow duplicate values in the object file, as long as they are the same after parsing. (#3739, fixes #3736, @rgrinberg)
Record instrumentation backends in dune-package files. This makes it possible to use instrumentation backends defined in installed libraries (eg via OPAM). (#3735, @nojb)
Add missing .aux & .glob targets to coq rules (#3721, fixes #3437, @rgrinberg)
Fix dune-package installation when META templates are present (#3743, fixes #3746, @rgrinberg)
Resolve symlinks before running $ git diff (#3750, fixes #3740, @rgrinberg)
Cram tests: when checking that all test directories contain a run.t file, skip empty directories. These can be left around by git. (#3753, @emillon)

2.7.0 (13/08/2020)

Write intermediate files in a .mdx folder for each mdx stanza to prevent the corresponding actions to be executed as part of the @all alias (#3659, @NathanReb)
Read Coq flags from env (#3547 , fixes #3486, @gares)
Add instrumentation framework to toggle instrumentation by bisect_ppx, landmarks, etc, via dune-workspace and/or the command-line. (#3404, #3526 @stephanieyou, @nojb)
Formatting of dune files is now done in the executing dune process instead of in a separate process. (#3536, @nojb)
Add a --debug-artifact-substitution flag to help debug problem with version not being captured by dune-build-info (#3589, @jeremiedimino)
Allow the use of the context_name variable in the enabled_if fields of executable(s) and install stanzas. (#3568, fixes #3566, @voodoos)
Fix compatibility with OCaml 4.12.0 when compiling empty archives; no .a file is generated. (#3576, @dra27)
$ dune utop no longer tries to load optional libraries that are unavailable (#3612, fixes #3188, @anuragsoni)
Fix dune-build-info on 4.10.0+flambda (#3599, @emillon, @jeremiedimino).
Allow multiple libraries with inline_tests to be defined in the same directory (#3621, @rgrinberg)
Run exit hooks in jsoo separate compilation mode (#3626, fixes #3622, @rgrinberg)
Add (alias ...), (mode ...) fields to (copy_fields ...) stanza (#3631, @nojb)
(copy_files ...) now supports copying files from outside the workspace using absolute file names (#3639, @nojb)
Dune does not use ocamlc as an intermediary to call C compiler anymore. Configuration flags ocamlc_cflags and ocamlc_cppflags are always prepended to the compiler arguments. (#3565, fixes #3346, @voodoos)
Revert the build optimization in #2268. This optimization slows down building individual executables when they're part of an executables stanza group (#3644, @rgrinberg)
Use {dev} rather than {pinned} in the generated .opam file. (#3647, @kit-ty-kate)
Insert correct extension name when editing dune-project files. Previously, dune would just insert the stanza name. (#3649, fixes #3624, @rgrinberg)
Fix crash when evaluating an mdx stanza that depends on unavailable packages. (#3650, @CraigFe)
Fix typo in cache-check-probablity field in dune config files. This field now requires 2.7 as it wasn't usable before this version. (#3652, @edwintorok)
Add "odoc" {with-doc} to the dependencies in the generated .opam files. (#3667, @kit-ty-kate)
Do not allow user actions to capture dune's stdin (#3677, fixes #3672, @rgrinberg)
(subdir ...) stanzas can now appear in dune files used via (include ...). (#3676, @nojb)
Add actions pipe-{stdout,stderr,outputs} for output redirections (#3392, fixes #428, @NathanReb)

2.6.2 (26/07/2020)

Fix compatibility with OCaml 4.12 (#3585, fixes #3583, @ejgallego)

2.6.1 (02/07/2020)

Fix crash when caching is enabled (@rgrinberg, #3581, fixes #3580)
Do not use -output-complete-exe until 4.10.1 as it is broken in 4.10.0 (@jeremiedimino, #3187)
Fix crash when an unknown pform is found (such as %{unknown}) (#3560, @emillon)
Improve error message when invalid package names (such as the empty string) are passed to dune build -p. (#3561, @emillon)
Fix a stack overflow when displaying large outputs (including diffs) (#3537, fixes #2767, #3490, @emillon)
Pass -g when compiling ppx preprocessors (#3671, @rgrinberg)

2.6.0 (05/06/2020)

Fix a bug where valid lib names in dune init exec --libs=lib1,lib2 results in an error. (#3444, fix #3443, @bikallem)
Add and enabled_ if field to the install stanza. Enforce the same variable restrictions for enabled_if fields in the executable and install stanzas than in the library stanza. When using dune lang < 2.6, the usage of forbidden variables in executables stanzas with only trigger a warning to maintain compatibility. (#3408 and #3496, fixes #3354, @voodoos)
Insert a constraint one the version of dune when the user explicitly specify the dependency on dune in the dune-project file (#3434 , fixes #3427, @diml)
Generate correct META files for sub-libraries (of the form lib.foo) that contain .js runtime files. (#3445, @hhugo)
Add a (no-infer ...) action that prevents inference of targets and dependencies in actions. (#3456, fixes #2006, @roddyyaga)
Correctly infer targets for the diff? action. (#3457, fixes #2990, @greedy)
Fix $ dune print-rules crashing (#3459, fixes #3440, @rgrinberg)
Simplify js_of_ocaml rules using js_of_ocaml.3.6 (#3375, @hhugo)
Add a new ocaml-merlin subcommand that can be used by Merlin to get configuration directly from dune instead of using .merlin files. (#3395, @voodoos)
Remove experimental variants feature and make default implementations part of the language (#3491, fixes #3483, @rgrinberg)

2.5.1 (17/04/2020)

[coq] Fix install .v files for Coq theories (#3384, @lthms)
[coq] Fix install path for theory names with level greater than 1 (#3358, @ejgallego)
Fix a bug introduced in 2.0.0 where the [locks] field in rules with no targets had no effect. (@aalekseyev, report by @craigfe)

2.5.0 (09/04/2020)

Add a --release option meaning the same as -p but without the package filtering. This is useful for custom dune invocation in opam files where we don't want -p (#3260, @diml)
Fix a bug introduced in 2.4.0 causing .bc programs to be built with -custom by default (#3269, fixes #3262, @diml)
Allow contexts to be defined with local switches in workspace files (#3265, fix #3264, @rgrinberg)
Delay expansion errors until the rule is used to build something (#3261, fix #3252, @rgrinberg, @diml)
[coq] Support for theory dependencies and compositional builds using new field (theories ...) (#2053, @ejgallego, @rgrinberg)
From now on, each version of a syntax extension must be explicitly tied to a minimum version of the dune language. Inconsistent versions in a dune-project will trigger a warning for version <=2.4 and an error for versions >2.4 of the dune language. (#3270, fixes #2957, @voodoos)
[coq] Bump coq lang version to 0.2. New coq features presented this release require this version of the coq lang. (#3283, @ejgallego)
Prevent installation of public executables disabled using the enabled_if field. Installation will now simply skip such executables instead of raising an error. (#3195, @voodoos)
dune upgrade will now try to upgrade projects using versions <2.0 to version 2.0 of the dune language. (#3174, @voodoos)
Add a top command to integrate dune with any toplevel, not just utop. It is meant to be used with the new #use_output directive of OCaml 4.11 (#2952, @mbernat, @diml)
Allow per-package version in generated opam files (#3287, @toots)
[coq] Introduce the coq.extraction stanza. It can be used to extract OCaml sources (#3299, fixes #2178, @rgrinberg)
Load ppx rewriters in dune utop and add pps field to toplevel stanza. Ppx extensions will now be usable in the toplevel (#3266, fixes #346, @stephanieyou)
Add a (subdir ..) stanza to allow evaluating stanzas in sub directories. (#3268, @rgrinberg)
Fix a bug preventing one from running inline tests in multiple modes (#3352, @diml)
Allow the use of the %{profile} variable in the enabled_if field of the library stanza. (#3344, @mrmr1993)
Allow the use of %{ocaml_version} variable in enabled_if field of the library stanza. (#3339, @voodoos)
Fix dune build freezing on MacOS when cache is enabled. (#3249, fixes ##2973, @artempyanykh)

2.4.0 (06/03/2020)

Add mdx extension and stanza version 0.1 (#3094, @NathanReb)
Allow to make Odoc warnings fatal. This is configured from the (env ...) stanza. (#3029, @Julow)
Fix separate compilation of JS when findlib is not installed. (#3177, @nojb)
Add a dune describe command to obtain the topology of a dune workspace, for projects such as ROTOR. (#3128, @diml)
Add plugin linking mode for executables and the (embed_in_plugin_libraries ...) field. (#3141, @nojb)
Add an %{ext_plugin} variable (#3141, @nojb)
Dune will no longer build shared objects for stubs if supports_shared_libraries is false (#3225, fixes #3222, @rgrinberg)
Fix a memory leak in the file-watching mode (dune build -w) (#3220, @snowleopard and @aalekseyev)
Starting from (lang dune 2.4), dune systematically puts all files under _build in read-only mode instead of only doing it when the shared cache is enabled (#3092, @mefyl)

2.3.1 (20/02/2020)

Fix versioning of artifact variables (eg %{cmxa:...}), which were introduced in 2.0, not 1.11. (#3149, @nojb)
Fix a bug introduced in 2.3.0 where dune insists on using fswatch on linux (even when inotifywait is available). (#3162, @aalekseyev)
Fix a bug causing all executables to be considered as optional (#3163, @diml)

2.3.0 (15/02/2020)

Improve validation and error handling of arguments to dune init (#3103, fixes #3046, @shonfeder)
dune init exec NAME now uses the NAME argument for private modules (#3103, fixes #3088, @shonfeder)
Avoid linear walk to detect children, this should greatly improve performance when a target has a large number of dependencies (#2959, @ejgallego, @aalekseyev, @Armael)
[coq] Add (boot) option to (coq.theories) to enable bootstrap of Coq's stdlib (#3096, @ejgallego)
[coq] Deprecate public_name field in favour of package (#2087, @ejgallego)
Better error reporting for "data only" and "vendored" dirs. Using these with anything else than a strict subdirectory or * will raise an error. The previous behavior was to just do nothing (#3056, fixes #3019, @voodoos)
Fix bootstrap on bytecode only switches on windows or where -j1 is set. (#3112, @xclerc, @rgrinberg)
Allow enabled_if fields in executable(s) stanzas (#3137, fixes #1690 @voodoos)
Do not fail if ocamldep, ocamlmklib, or ocaml are absent. Wait for them to be used to fail (#3138, @rgrinberg)
Introduce a strict_package_deps mode that verifies that dependencies between packages in the workspace are specified correctly. (@rgrinberg, #3117)
Make sure the @all alias is defined when no dune file is present in a directory (#2946, fix #2927, @diml)

2.2.0 (06/02/2020)

dune test is now a command alias for dune runtest. This is to make the CLI less idiosyncratic (#3006, @shonfeder)
Allow to set menhir flags in the env stanza using the menhir_flags field. (#2960, fix #2924, @bschommer)
By default, do not show the full command line of commands executed by dune when dune is executed inside dune. This is to make integration tests more reproducible (#3042, @diml)
dune subst now works even without opam files (#2955, fixes #2910, @fangyi-zhou and @diml)
Hint when trying to execute an executable defined in the current directory without using the ./ prefix (#3041, fixes #1094, @voodoos).
Extend the list of modifiers that can be nested under with-accepted-exit-codes with chdir, setenv, ignore-<outputs>, with-stdin-from and with-<outputs>-to (#3027, fixes #3014, @voodoos)
It is now an error to have a preprocessing dependency on a ppx rewriter library that is not marked as (kind ppx_rewriter) (#3039, @snowleopard).
Fix permissions of files promoted to the source tree when using the shared cache. In particular, make them writable by the user (#3043, fixes #3026, @diml)
Only detect internal OCaml tools with .opt extensions. Previously, this detection applied to other binaries as well (@kit-ty-kate, @rgrinberg, #3051).
Give the user a proper error message when they try to promote into a source directory that doesn't exist. (#3073, fix #3069, @rgrinberg)
Correctly build vendored packages in -p mode. These packages were incorrectly filtered out before. (#3075, @diml)
Do not install vendored packages (#3074, @diml)
make now prints a message explaining the main targets available (#3085, fix #3078, @diml)
Add a byte_complete executable mode to build programs as self-contained bytecode programs (#3076, fixes #1519, @diml)

2.1.3 (16/01/2020)

Fix building the OCaml compiler with Dune (#3038, fixes #2974, @diml)

2.1.2 (08/01/2020)

Fix a bug in the Fiber.finalize function of the concurrency monad of Dune, causing a race condition at the user level (#3009, fix #2958, @diml)

2.1.1 (07/01/2020)

Guess foreign archives & native archives for libraries defined using the META format. (#2994, @rgrinberg, @anmonteiro)
Fix generation of .merlin files when depending on local libraries with more than one source directory. (#2983, @rgrinberg)

2.1.0 (21/12/2019)

Attach cinaps stanza actions to both @runtest and @cinaps aliases (#2831, @NathanReb)
Add variables %{lib-private...} and %{libexec-private...} for finding build paths of files in public and private libraries within the same project. (#2901, @snowleopard)
Add --mandir option to $ dune install. This option allows to override the installation directory for man pages. (#2915, fixes #2670, @rgrinberg)
Fix dune --version. The bootstrap didn't compute the version correctly. (#2929, fixes #2911, @diml)
Do not open the log file in dune clean. (#2965, fixes #2964 and #2921, @diml)
Support passing two arguments to =, <>, ... operators in package dependencies so that we can have things such as (<> :os win32) (#2965, @diml)

2.0.1 (17/12/2019)

Delay errors raised by invalid dune-package files. The error is now raised only if the invalid package is treated as a library and used to build something. (#2972, @rgrinberg)

2.0.0 (20/11/2019)

Remove existing destination files in install before installing the new ones. (#2885, fixes #2883, @bschommer)
The action field in the alias stanza is not available starting lang dune 2.0. The alias field in the rule stanza is a replacement. (#2846, fixes 2681, @rgrinberg)
Introduce alias and package fields to the rule stanza. This is the preferred way of attaching rules to aliases. (#2744, @rgrinberg)
Add field (optional) for executable stanzas (#2463, fixes #2433, @bobot)
Infer targets for rule stanzas expressed in long form (#2494, fixes #2469, @NathanReb)
Indicate the progress of the initial file tree loading (#2459, fixes #2374, @bobot)
Build .cm[ox] files for executables more eagerly. This speeds up builds at the cost of building unnecessary artifacts in some cases. Some of these extra artifacts can fail to built, so this is a breaking change. (#2268, @rgrinberg)
Do not put the <package>.install files in the source tree unless -p or --promote-install-files is passed on the command line (#2329, @diml)
Compilation units of user defined executables are now mangled by default. This is done to prevent the accidental collision with library dependencies of the executable. (#2364, fixes #2292, @rgrinberg)
Enable (explicit_js_mode) by default. (#1941, @nojb)
Add an option to clear the console in-between builds with --terminal-persistence=clear-on-rebuild
Stop symlinking object files to main directory for stanzas defined jbuild files (#2440, @rgrinberg)
Library names are now validated in a strict fashion. Previously, invalid names would be allowed for unwrapped libraries (#2442, @rgrinberg)
mli only modules must now be explicitly declared. This was previously a warning and is now an error. (#2442, @rgrinberg)
Modules filtered out from the module list via the Ordered Set Language must now be actual modules. (#2442, @rgrinberg)
Actions which introduce targets where new targets are forbidden (e.g. preprocessing) are now an error instead of a warning. (#2442, @rgrinberg)
No longer install a jbuilder binary. (#2441, @diml)
Stub names are no longer allowed relative paths. This was previously a warning and is now an error (#2443, @rgrinberg).
Define (paths ...) fields in (context ...) definitions in order to set or extend any PATH-like variable in the context environment. (#2426, @nojb)
The diff action will always normalize newlines before diffing. Previously, it would not do this normalization for rules defined in jbuild files. (#2457, @rgrinberg)
Modules may no longer belong to more than one stanza. This was previously allowed only in stanzas defined in jbuild files. (#2458, @rgrinberg)
Remove support for jbuild-ignore files. They have been replaced by the the dirs stanza in dune files. (#2456, @rgrinberg)
Add a new config option sandboxing_preference, the cli argument --sandbox, and the dep spec sandbox in dune language. These let the user control the level of sandboxing done by dune per rule and globally. The rule specification takes precedence. The global configuration merely specifies the default. (#2213, @aalekseyev, @diml)
Remove support for old style subsystems. Dune will now emit a warning to reinstall the library with the old style subsystem. (#2480, @rgrinberg)
Add action (with-stdin-from ) to redirect input from when performing . (#2487, @nojb)
Change the automatically generated odoc index to only list public modules. This only affects unwrapped libraries (#2479, @rgrinberg)
Set up formatting rules by default. They can be configured through a new (formatting) stanza in dune-project (#2347, fixes #2315, @emillon)
Change default target from @install to @all. (#2449, fixes #1220, @rgrinberg)
Include building stubs in @check rules. (@rgrinberg, #2530)
Get rid of ad-hoc rules for guessing the version. Dune now only relies on the version written in the dune-project file and no longer read VERSION or similar files (#2541, @diml)
In (diff? x y) action, require x to exist and register a dependency on that file. (#2486, @aalekseyev)
On Windows, an .exe suffix is no longer added implicitly to binary names that already end in .exe. Second, when resolving binary names, .opt variants are no longer chosen automatically. (#2543, @nojb)
Make (diff? x y) move the correction file (y) away from the build directory to promotion staging area. This makes corrections work with sandboxing and in general reduces build directory pollution. (#2486, @aalekseyev, fixes #2482)
c_flags, c_names and cxx_names are now supported in executable and executables stanzas. (#2562, @nojb) Note: this feature has been subsequently extended into a separate foreign_stubs field. The fields c(xx)_names and c(xx)_flags are now deleted. (#2659, RFC #2650, @snowleopard)
Remove git integration from $ dune upgrade (#2565, @rgrinberg)
Add a --disable-promotion to disable all modification to the source directory. There's also a corresponding DUNE_DISABLE_PROMOTION environment variable. (#2588, fix #2568, @rgrinberg)
Add a forbidden_libraries field to prevent some library from being linked in an executable. This help detecting who accidentally pulls in unix for instance (#2570, @diml)
Fix incorrect error message when a variable is expanded in static context: %{lib:lib:..} when the library does not exist. (#2597, fix #1541, @rgrinberg)
Add --sections option to $ dune install to install subsections of .install files. This is useful for installing only the binaries in a workspace for example. (#2609, fixes #2554, @rgrinberg)
Drop support for jbuild and jbuild-ignore files (#2607, @diml)
Add a dune-action-plugin library for describing dependencies directly in the executable source. Programs that use this feature can be run by a new action (dynamic-run ...). (#2635, @staronj, @aalekseyev)
Stop installing the ocaml-syntax-shims binary. In order to use future_syntax, one now need to depend on the ocaml-syntax-shims package (#2654, @diml)
Add support for dependencies that are re-exported. Such dependencies are marked withre_export and will automatically be provided to users of a library (#2605, @rgrinberg)
Add a deprecated_library_name stanza to redirect old names after a library has been renamed (#2528, @diml)
Error out when a preprocessor_deps field is present but not preprocess field is. It is a warning with Dune 1.x projects (#2660, @Julow)
Dune will use -output-complete-exe instead of -custom when compiling self-contained bytecode executables whenever this options is available (OCaml version >= 4.10) (#2692, @nojb)
Add action (with-accepted-exit-codes <pred> <action>) to specify the set of successful exit codes of <action>. <pred> is specified using the predicate language. (#2699, @nojb)
Do not setup rules for disabled libraries (#2491, fixes #2272, @bobot)
Configurator: filter out empty flags from pkg-config (#2716, @AltGr)
no_keep_locs is a no-op for projects that use lang dune older than 2.0. In projects where the language is at least 2.0, the field is now forbidden. (#2752, fixes #2747, @rgrinberg)
Extend support for foreign sources and archives via the (foreign_library ...) stanza as well as the (foreign_stubs ...) and (foreign_archives ...) fields. (#2659, RFC #2650, @snowleopard)
Add (deprecated_package_names) field to (package) declaration in dune-project. The names declared here can be used in the (old_public_name) field of (deprecated_library_name) stanza. These names are interpreted as library names (not prefixed by a package name) and appropriate redirections are setup in their META files. This feature is meant to migrate old libraries which do not follow Dune's convention of prefixing libraries with the package name. (#2696, @nojb)
The fields license, authors, maintainers, source, bug_reports, homepage, and documentation of dune-project can now be overridden on a per-package basis. (#2774, @nojb)
Change the default modes field of executables to (mode exe). If one wants to build a bytecode program, it now needs to be explicitly requested via (modes byte exe). (#2851, @diml)
Allow ccomp_type as a variable for evaluating enabled_if. (#2855, @dra27, @rgrinberg)
Stricter validation of file names in select. The file names of conditional sources must match the prefix and the extension of the resultant filename. (#2867, @rgrinberg)
Add flag disable_dynamically_linked_foreign_archives to the workspace file. If the flag is set to true then: (i) when installing libraries, we do not install dynamic foreign archives dll*.so; (ii) when building executables in the byte mode, we statically link in foreign archives into the runtime system; (iii) we do not generate any dll*.so rules. (#2864, @snowleopard)
Reimplement the bootstrap procedure. The new procedure is faster and should no longer stack overflow (#2854, @dra27, @diml)
Allow .opam.template files to be generated using rules (#2866, @rgrinberg)
Delete the deprecated self_build_stubs_archive field, replaced by foreign_archives.

1.11.4 (09/10/2019)

Allow to mark directories as data_only_dirs without including them as dirs (#2619, fix #2584, @rgrinberg)
Fix reading .install files generated with an external --build-dir. (#2638, fix #2629, @rgrinberg)

1.11.3 (23/08/2019)

Fix a ppx hash collision in watch mode (#2546, fixes #2520, @diml)

1.11.2 (20/08/2019)

Remove the optimisation of passing -nodynlink for executables when not necessary. It seems to be breaking things (see #2527, @diml)
Fix invalid library names in dune-package files. Only public names should exist in such files. (#2558, fix #2425, @rgrinberg)

1.11.1 (09/08/2019)

Fix config file dependencies of ocamlformat (#2471, fixes #2464, @nojb)
Cleanup stale directories when using (source_tree ...) in the presence of directories with only sub-directories and no files (#2514, fixes #2499, @diml)

1.11.0 (23/07/2019)

Don't select all local implementations in dune utop. Instead, let the default implementation selection do its job. (#2327, fixes #2323, @TheLortex, review by @rgrinberg)
Check that selected implementations (either by variants or default implementations) are indeed implementations. (#2328, @TheLortex, review by @rgrinberg)
Don't reserve the Ppx toplevel module name for ppx rewriters (#2242, @diml)
Redesign of the library variant feature according to the #2134 proposal. The set of variants is now computed when the virtual library is installed. Introducing a new external_variant stanza. (#2169, fixes #2134, @TheLortex, review by @diml)
Add proper line directives when copying .cc and .cxx sources (#2275, @rgrinberg)
Fix error message for missing C++ sources. The .cc extension was always ignored before. (#2275, @rgrinberg)
Add $ dune init project subcommand to create project boilerplate according to a common template. (#2185, fixes #159, @shonfeder)
Allow to run inline tests in javascript with nodejs (#2266, @hhugo)
Build ppx.exe as compiling host binary. (#2286, fixes #2252, @toots, review by @rgrinberg and @diml)
Add a cinaps extension and stanza for better integration with the cinaps tool tool (#2269, @diml)
Allow to embed build info in executables such as version and list and version of statically linked libraries (#2224, @diml)
Set version in META and dune-package files to the one read from the vcs when no other version is available (#2224, @diml)
Add a variable %{target} to be used in situations where the context requires at most one word, so %{targets} can be confusing; stdout redirections and "-o" arguments of various tools are the main use case; also, introduce a separate field target that must be used instead of targets in those situations. (#2341, @aalekseyev)
Fix dependency graph of wrapped_compat modules. Previously, the dependency on the user written entry module was omitted. (#2305, @rgrinberg)
Allow to promote executables built with an executable stanza (#2379, @diml)
When instantiating an implementation with a variant, make sure it matches virtual library's list of known implementations. (#2361, fixes #2322, @TheLortex, review by @rgrinberg)
Add a variable %{ignoring_promoted_rules} that is true when --ignore-promoted-rules is passed on the command line and false otherwise (#2382, @diml)
Fix a bug in future_syntax where the characters @ and & were not distinguished in the names of binding operators (let@ was the same as let&) (#2376, @aalekseyev, @diml)
Workspaces with non unique project names are now supported. (#2377, fix #2325, @rgrinberg)
Improve opam generation to include the dune dependencies with the minimum constraint set based on the dune language version specified in the dune-project file. (2383, @avsm)
The order of fields in the generated opam file now follows order preferred in opam-lib. (@avsm, #2380)
Fix coloring of error messages from the compiler (@diml, #2384)
Add warning 66 to default set of warnings starting for dune projects with language version >= 1.11 (@rgrinberg, @diml, fixes #2299)
Add (dialect ...) stanza (@nojb, #2404)
Add a --context argument to dune install/uninstall (@diml, #2412)
Do not warn about merlin files pre 1.9. This warning can only be disabled in 1.9 (#2421, fixes #2399, @emillon)
Add a new inline_tests field in the env stanza to control inline_tests framework with a variable (#2313, @mlasson, original idea by @diml, review by @rgrinberg).
New binary kind js for executables in order to explicitly enable Javascript targets, and a switch (explicit_js_mode) to require this mode in order to declare JS targets corresponding to executables. (#1941, @nojb)
Allow unwrapped implementations of public libraries to introduce new public modules (@rgrinberg)

1.10.0 (04/06/2019)

Restricted the set of variables available for expansion in the destination filename of install stanza to simplify implementation and avoid dependency cycles. (#2073, @aalekseyev, @diml)
[menhir] call menhir from context root build_dir (#2067, @ejgallego, review by @diml, @rgrinberg)
[coq] Add coq.pp stanza to help with pre-processing of grammar files (#2054, @ejgallego, review by @rgrinberg)
Add a new more generic form for the promote mode: (promote (until-clean) (into <dir>)) (#2068, @diml)
Allow to promote only a subset of the targets via (promote (only <pred>)). For instance: (promote (only *.mli)) (#2068, @diml)
Improve the behavior when a strict subset of the targets of a rule is already in the source tree for projects using the dune language < 1.10 (#2068, fixes #2061, @diml)
With lang dune >= 1.10, rules in standard mode are no longer allowed to produce targets that are present in the source tree. This has been a warning for long enough (#2068, @diml)
Allow %{...} variables in pps flags (#2076, @mlasson review by @diml and @aalekseyev).
Add a 'cookies' option to ppx_rewriter/deriver flags in library stanzas. This allow to specify cookie requests from variables expanded at each invocation of the preprocessor. (#2106, @mlasson @diml)
Add more opam metadata and use it to generate .opam files. In particular, a package field has been added to specify package specific information. (#2017, #2091, @avsm, @jonludlam, @rgrinberg)
Clean up the special support for findlib.dynload. Before, Dune would simply match on the library name. Now, we only match on the findlib package name when the library doesn't come from Dune. Someone writing a library called findlib.dynload with Dune would have to add (special_builtin_support findlib_dynload) to trigger the special behavior. (#2115, @diml)
Install the future_syntax preprocessor as ocaml-syntax-shims.exe (#2125, @rgrinberg)
Hide full command on errors and warnings in development and show them in CI. (detected using the CI environment variable). Commands for which the invocation might be omitted must output an error prefixed with File . Add an --always-show-command-line option to disable this behavior and always show the full command. (#2120, fixes #1733, @rgrinberg)
In dune-workspace files, add the ability to choose the host context and to create duplicates of the default context with different settings. (#2098, @TheLortex, review by @diml, @rgrinberg and @aalekseyev)
Add support for hg in dune subst (#2135, @diml)
Don't build documentation for implementations of virtual libraries (#2141, fixes #2138, @jonludlam)
Fix generation of the -pp flag in .merlin (#2142, @rgrinberg)
Make dune subst add a (version ...) field to the dune-project file (#2148, @diml)
Add the %{os_type} variable, which is a short-hand for %{ocaml-config:os_type} (#1764, @diml)
Allow enabled_if fields in library stanzas, restricted to the %{os_type}, %{model}, %{architecture}, %{system} variables (#1764, #2164 @diml, @rgrinberg)
Fix chdir on external and source paths. Dune will also fail gracefully if the external or source path does not exist (#2165, fixes #2158, @rgrinberg)
Support the .cc extension for C++ sources (#2195, fixes #83, @rgrinberg)
Run ocamlformat relative to the context root. This improves the locations of errors. (#2196, fixes #1370, @rgrinberg)
Fix detection of README, LICENSE, CHANGE, and HISTORY files. These would be undetected whenever the project was nested in another workspace. (#2194, @rgrinberg)
Fix generation of .merlin whenever there's more than one stanza with the same ppx preprocessing specification (#2209 ,fixes #2206, @rgrinberg)
Fix generation of .merlin in the presence of the copy_files stanza and preprocessing specifications of other stanazs. (#2211, fixes #2206, @rgrinberg)
Run refmt from the context's root directory. This improves error messages in case of syntax errors. (#2223, @rgrinberg)
In .merlin files, don't pass -dump-ast to the future_syntax preprocessor. Merlin doesn't seem to like it when binary AST is generated by a -pp preprocessor. (#2236, @aalekseyev)
dune install will verify that all files mentioned in all .install files exist before trying to install anything. This prevents partial installation of packages (#2230, @rgrinberg)

1.9.3 (06/05/2019)

Fix .install files not being generated (#2124, fixes #2123, @rgrinberg)

1.9.2 (02/05/2019)

Put back library variants in development mode. We discovered a serious unexpected issue and we might need to adjust the design of this feature before we are ready to commit to a final version. Users will need to write (using library_variants 0.1) in their dune-project file if they want to use it before the design is finalized. (#2116, @diml)
Forbid to attach a variant to a library that implements a virtual library outside the current project (#2104, @rgrinberg)
Fix a bug where dune install would install man pages to incorrect paths when compared to opam-installer. For example dune now installs (foo.1 as man1/foo.1) correctly and previously that was installed to man1/man1/foo.1. (#2105, @aalekseyev)
Do not fail when a findlib directory doesn't exist (#2101, fix #2099, @diml)
[coq] Rename (coqlib ...) to (coq.theory ...), support for coqlib will be dropped in the 1.0 version of the Coq language (#2055, @ejgallego)
Fix crash when calculating library dependency closure (#2090, fixes #2085, @rgrinberg)
Clean up the special support for findlib.dynload. Before, Dune would simply match on the library name. Now, we only match on the findlib package name when the library doesn't come from Dune. Someone writing a library called findlib.dynload with Dune would have to add (special_builton_support findlib_dynload) to trigger the special behavior. (#2115, @diml)
Include permissions in the digest of targets and dependencies (#2121, fix #1426, @rgrinberg, @xclerc)

1.9.1 (11/04/2019)

Fix invocation of odoc to add previously missing include paths, impacting mld files that are not in directories containing libraries (#2016, fixes #2007, @jonludlam)

1.9.0 (09/04/2019)

Warn when generated .merlin does not reflect the preprocessing specification. This occurs when multiple stanzas in the same directory use different preprocessing specifications. This warning can now be disabled with allow_approx_merlin (#1947, fix #1946, @rgrinberg)
Watch mode: display "Success" in green and "Had errors" in red (#1956, @emillon)
Fix glob dependencies on installed directories (#1965, @rgrinberg)
Add support for library variants and default implementations. (#1900, @TheLortex)
Add experimental $ dune init command. This command is used to create or update project boilerplate. (#1448, fixes #159, @shonfeder)
Experimental Coq support (fix #1466, @ejgallego)
Install .cmi files of private modules in a .private directory (#1983, fix #1973 @rgrinberg)
Fix dune subst attempting to substitute on directories. (#2000, fix #1997, @rgrinberg)
Do not list private modules in the generated index. (#2009, fix #2008, @rgrinberg)
Warn instead of failing if an opam file fails to parse. This opam file can still be used to define scope. (#2023, @rgrinberg)
Do not crash if unable to read a directory when traversing to find root (#2024, @rgrinberg)
Do not exit dune if some source directories are unreadable. Instead, warn the user that such directories need to be ignored (#2004, fix #310, @rgrinberg)
Fix nested (binaries ..) fields in the env stanza. Previously, parent binaries fields would be ignored, but instead they should be combined. (#2029, @rgrinberg)
Allow "." in c_names and cxx_names (#2036, fix #2033, @rgrinberg)
Format rules: if a dune file uses OCaml syntax, do not format it. (#2014, fix #2012, @emillon)

1.8.2 (10/03/2019)

Fix auto-generated index.mld. Use correct headings for the listing. (#1925, @rgrinberg, @aantron)

1.8.1 (08/03/2019)

Correctly write dune-package when version is empty string (#1919, fix #1918, @rgrinberg)

1.8.0 (07/03/2019)

Clean up watch mode polling loop: improves signal handling and error handling during polling (#1912, fix #1907, fix #1671, @aalekseyev)
Change status messages during polling to be one-line, so that the messages are correctly erased by ^K. (#1912, @aalekseyev)
Add support for .cxx extension for C++ stubs (#1831, @rgrinberg)
Add DUNE_WORKSPACE variable. This variable is equivalent to setting --workspace in the command line. (#1711, fix #1503, @rgrinberg)
Add c_flags and cxx_flags to env profile settings (#1700 and #1800, @gretay-js)
Format dune printenv output (#1867, fix #1862, @emillon)
Add the (promote-into <dir>) and `(promote-until-clean-into
)` modes for `(rule ...)` stanzas, so that files can be promoted in another directory than the current one. For instance, this is used in merlin to promote menhir generated files in a directory that depends on the version of the compiler (#1890, @diml)
Improve error message when dune subst fails (#1898, fix #1897, @rgrinberg)
Add more GC counters to catapult traces (fix908, @rgrinberg)
Add a preprocessor shim for the let+ syntax of OCaml 4.08 (#1899, implements #1891, @diml)
Fix generation of .merlin files on Windows. \ characters needed to be escaped (#1869, @mlasson)
Fix 0 error code when $ dune format-dune-file fails. (#1915, fix #1914, @rgrinberg)
Configurator: deprecated query_expr and introduced query_expr_err which is the same but with a better error in case it fails. (#1886, @ejgallego)
Make sure (menhir (mode promote) ...) stanzas are ignored when using --ignore-promoted-rules or -p (#1917, @diml)

1.7.3 (27/02/2019)

Fix interpretation of META files containing archives with / in the filename. For instance, this was causing llvm to be unusable with dune (#1889, fix #1885, @diml)
Make errors about menhir stanzas be located (#1881, fix #1876, @diml)

1.7.2 (21/02/2019)

Add ${corrected-suffix}, ${library-name} and a few other variables to the list of variables to upgrade. This fixes the support for various framework producing corrections (#1840, #1853, @diml)
Fix $ dune subst failing because the build directory wasn't set. (#1854, fix #1846, @rgrinberg)
Configurator: Add warning to Pkg_config.query when a full package expression is used. Add Pkg_config.query_expr for cases when the full power of pkg-config's querying is needed (#1842, fix #1833, @rgrinberg)
Fix unavailable, optional implementations eagerly breaking the build (#1857, fix #1856, @rgrinberg)

1.7.1 (13/02/2019)

Fix the watch mode (#1837, #1839, fix #1836, @diml)
Configurator: Fix misquoting when running pkg-config (#1835, fix #1833, @Chris00)

1.7.0 (12/02/2019)

Second step of the deprecation of jbuilder: the jbuilder binary now emits a warning on every startup and both jbuilder and dune emit warnings when encountering jbuild files (#1752, @diml)
Change the layout of build artifacts inside _build. The new layout enables optimizations that depend on the presence of .cmx files of private modules (#1676, @bobot)
Fix merlin handling of private module visibility (#1653 @bobot)
unstable-fmt: use boxes to wrap some lists (#1608, fix #1153, @emillon, thanks to @rgrinberg)
skip directories when looking up programs in the PATH (#1628, fixes #1616, @diml)
Use lsof on macOS to implement --stats (#1636, fixes #1634, @xclerc)
Generate dune-package files for every package. These files are installed and read instead of META files whenever they are available (#1329, @rgrinberg)
Fix preprocessing for libraries with (include_subdirs ..) (#1624, fix #1626, @nojb, @rgrinberg)
Do not generate targets for archive that don't match the modes field. (#1632, fix #1617, @rgrinberg)
When executing actions, open files lazily and close them as soon as possible in order to reduce the maximum number of file descriptors opened by Dune (#1635, #1643, fixes #1633, @jonludlam, @rgrinberg, @diml)
Reimplement the core of Dune using a new generic memoization system (#1489, @rudihorn, @diml)
Replace the broken cycle detection algorithm by a state of the art one from this paper (#1489, @rudihorn)
Get the correct environment node for multi project workspaces (#1648, @rgrinberg)
Add dune compute to call internal memoized functions (#1528, @rudihorn, @diml)
Add --trace-file option to trace dune internals (#1639, fix #1180, @emillon)
Add --no-print-directory (borrowed from GNU make) to suppress Entering directory messages. (#1668, @dra27)
Remove --stats and track fd usage in --trace-file (#1667, @emillon)
Add virtual libraries feature and enable it by default (#1430 fixes #921, @rgrinberg)
Fix handling of Control+C in watch mode (#1678, fixes #1671, @diml)
Look for jsoo runtime in the same dir as the js_of_ocaml binary when the ocamlfind package is not available (#1467, @nojb)
Make the seq package available for OCaml >= 4.07 (#1714, @rgrinberg)
Add locations to error messages where a rule fails to generate targets and rules that require files outside the build/source directory. (#1708, fixes #848, @rgrinberg)
Let Configurator handle sizeof (in addition to negative numbers). (#1726, fixes #1723, @Chris00)
Fix an issue causing menhir generated parsers to fail to build in some cases. The fix is to systematically use -short-paths when calling ocamlc -i (#1743, fix #1504, @diml)
Never raise when printing located errors. The code that would print the location excerpts was prone to raising. (#1744, fix #1736, @rgrinberg)
Add a dune upgrade command for upgrading jbuilder projects to Dune (#1749, @diml)
When automatically creating a dune-project file, insert the detected name in it (#1749, @diml)
Add (implicit_transitive_deps <bool>) mode to dune projects. When this mode is turned off, transitive dependencies are not accessible. Only listed dependencies are directly accessible. (#1734, #430, @rgrinberg, @hnrgrgr)
Add toplevel stanza. This stanza is used to define toplevels with libraries already preloaded. (#1713, @rgrinberg)
Generate .merlin files that account for normal preprocessors defined using a subset of the action language. (#1768, @rgrinberg)
Emit (orig_src_dir <path>) metadata in dune-package for dune packages built with --store-orig-source-dir command line flag (also controlled by DUNE_STORE_ORIG_SOURCE_DIR env variable). This is later used to generate .merlin with S-directives pointed to original source locations and thus allowing merlin to see those. (#1750, @andreypopp)
Improve the behavior of dune promote when the files to be promoted have been deleted. (#1775, fixes #1772, @diml)
unstable-fmt: preserve comments (#1766, @emillon)
Pass flags correctly when using staged_pps (#1779, fixes #1774, @diml)
Fix an issue with the use of (mode promote) in the menhir stanza. It was previously causing intermediate mock files to be promoted (#1783, fixes #1781, @diml)
unstable-fmt: ignore files using OCaml syntax (#1784, @emillon)
Configurator: Add which function to replace the which command line utility in a cross platform way. (#1773, fixes #1705, @Chris00)
Make configurator append paths to $PKG_CONFIG_PATH on macOS. Previously it was prepending paths and thus $PKG_CONFIG_PATH set by users could have been overridden by homebrew installed libraries (#1785, @andreypopp)
Disallow c/cxx sources that share an object file in the same stubs archive. This means that foo.c and foo.cpp can no longer exist in the same library. (#1788, @rgrinberg)
Forbid use of %{targets} (or ${@} in jbuild files) inside preprocessing actions (#1812, fixes #1811, @diml)
Add DUNE_PROFILE environment variable to easily set the profile. (#1806, @rgrinberg)
Deprecate the undocumented (no_keep_locs) field. It was only necessary until virtual libraries were supported (#1822, fix #1816, @diml)
Rename unstable-fmt to format-dune-file and remove its --inplace option. (#1821, @emillon).
Autoformatting: (using fmt 1.1) will also format dune files (#1821, @emillon).
Autoformatting: record dependencies on .ocamlformat-ignore files (#1824, fixes #1793, @emillon)

1.6.2 (05/12/2018)

Fix regression introduced by #1554 reported in: ocaml#734 (comment) (#1612, @rgrinberg)
Fix dune external-lib-deps when preprocessors are not installed (#1607, @diml)

1.6.1 (04/12/2018)

Fix hash collision for on-demand ppx rewriters once and for all (#1602, fixes #1524, @diml)
Add dune external-lib-deps --sexp --unstable-by-dir so that the output can be easily processed by a machine (#1599, @diml)

1.6.0 (29/11/2018)

Expand variables in install stanzas (#1354, @mseri)
Add predicate language support for specifying sub directories. This allows the use globs, set operations, and special values in specifying the sub directories used for the build. For example: (dirs :standard \ lib*) will use all directories except those that start with lib. (#1517, #1568, @rgrinberg)
Add binaries field to the (env ..) stanza. This field sets and overrides binaries for rules defined in a directory. (#1521, @rgrinberg)
Fix a crash caused by using an extension in a project without dune-project file (#1535, fix #1529, @diml)
Allow %{bin:..}, %{exe:..}, and other static expansions in the deps field. (#1155, fix #1531, @rgrinberg)
Fix bad interaction between on-demand ppx rewriters and using multiple build contexts (#1545, @diml)
Fix handling of installed .dune files when the backend is declared via a dune file (#1551, fixes #1549, @diml)
Add a --stats command line option to record resource usage (#1543, @diml)
Fix dune build @doc deleting highlight.pack.js on rebuilds, after the first build (#1557, @aantron).
Allow targets to be directories, which Dune will treat opaquely (#1547, @jordwalke)
Support for OCaml 4.08: List.t is now provided by OCaml (#1561, @ejgallego)
Exclude the local esy directory (_esy) from the list of watched directories (#1578, @andreypopp)
Fix the output of dune external-lib-deps (#1594, @diml)
Introduce data_only_dirs to replace ignored_subdirs. ignored_subdirs is deprecated since 1.6. (#1590, @rgrinberg)

1.5.1 (7/11/2018)

Fix dune utop <dir> when invoked from a sub-directory of the project (#1520, fix #1518, @diml)
Fix bad interaction between on-demand ppx rewriters and polling mode (#1525, fix #1524, @diml)

1.5.0 (1/11/2018)

Filter out empty paths from OCAMLPATH and PATH (#1436, @rgrinberg)
Do not add the lib.cma.js target in lib's directory. Put this target in a sub directory instead. (#1435, fix #1302, @rgrinberg)
Install generated OCaml files with a .ml rather than a .ml-gen extension (#1425, fix #1414, @rgrinberg)
Allow to use the bigarray library in >= 4.07 without ocamlfind and without installing the corresponding otherlib. (#1455, @nojb)
Add @all alias to build all targets defined in a directory (#1409, fix #1220, @rgrinberg)
Add @check alias to build all targets required for type checking and tooling support. (#1447, fix #1220, @rgrinberg)
Produce the odoc index page with the content wrapper to make it consistent with odoc's theming (#1469, @rizo)
Unblock signals in processes started by dune (#1461, fixes #1451, @diml)
Respect OCAMLFIND_TOOLCHAIN and add a toolchain option to contexts in the workspace file. (#1449, fix #1413, @rgrinberg)
Fix error message when using copy_files stanza to copy files from a non sub directory with lang set to dune < 1.3 (#1486, fixes #1485, @NathanReb)
Install man pages in the correct subdirectory (#1483, fixes #1441, @emillon)
Fix version syntax check for test stanza's action field. Only emits a warning for retro-compatibility (#1474, fixes #1471, @NathanReb)
Interpret the DESTDIR environment variable (#1475, @emillon)
Fix interpretation of paths in env stanzas (#1509, fixes #1508, @diml)
Add context_name expansion variable (#1507, @rgrinberg)
Use shorter paths for generated on-demand ppx drivers. This is to help Windows builds where paths are limited in length (#1511, fixes #1497, @diml)
Fix interpretation of %{env:<var>=<default>} environment variables under setenv. Also forbid dynamic environment names or values (#1503, @rgrinberg).

1.4.0 (10/10/2018)

Do not fail if the output of ocamlc -config doesn't include standard_runtime (#1326, @diml)
Let Configurator.V1.C_define.import handle negative integers (#1334, @Chris00)
Re-execute actions when a target is modified by the user inside _build (#1343, fix #1342, @diml)
Pass --set-switch to opam (#1341, fix #1337, @diml)
Fix bad interaction between multi-directory libraries the menhir stanza (#1373, fix #1372, @diml)
Integration with automatic formatters (#1252, fix #1201, @emillon)
Better error message when using (self_build_stubs_archive ...) and (c_names ...) or (cxx_names ...) simultaneously. (#1375, fix #1306, @nojb)
Improve name detection for packages when the prefix isn't an actual package (#1361, fix #1360, @rgrinberg)
Support for new menhir rules (#863, fix #305, @fpottier, @rgrinberg)
Do not remove flags when compiling compatibility modules for wrapped mode (#1382, fix #1364, @rgrinberg)
Fix reason support when using staged_pps (#1384, @charlesetc)
Add support for enabled_if in rule, menhir, ocamllex, ocamlyacc (#1387, @diml)
Exit gracefully when a signal is received (#1366, @diml)
Load all defined libraries recursively into utop (#1384, fix #1344, @rgrinberg)
Allow to use libraries bytes, result and uchar without findlib installed (#1391, @nojb)
Take argument to self_build_stubs_archive into account. (#1395, @nojb)
New variable form %{env:<var>=<default>} that expands to the environment variable <var>, or <default> if not found. Example: %{env:BIN=/usr/bin}. (#1305, @trefis)
Fix bad interaction between env customization and vendored projects: when a vendored project didn't have its own env stanza, the env stanza from the enclosing project was in effect (#1408, @diml)
Fix stop early bug when scanning for watermarks (#1423, @struktured)

1.3.0 (23/09/2018)

Support colors on Windows (#1290, @diml)
Allow dune.configurator and base to be used together (#1291, fix #1167, @diml)
Support interrupting and restarting builds on file changes (#1246, @kodek16)
Fix findlib-dynload support with byte mode only (#1295, @bobot)
Make dune rules -m output a valid makefile (#1293, @diml)
Expand variables in (targets ..) field (#1301, #1320, fix #1189, @nojb, @rgrinberg, @diml)
Fix a race condition on Windows that was introduced in 1.2.0 (#1304, fix #1303, @diml)
Fix the generation of .merlin files to account for private modules (@rgrinberg, fix #1314)
Exclude the local opam switch directory (_opam) from the list of watched directories (#1315, @dysinger)
Fix compilation of the module generated for findlib.dynload (#1317, fix #1310, @diml)
Lift restriction on copy_files and copy_files# stanzas that files to be copied should be in a subdirectory of the current directory. (#1323, fix #911, @nojb)

1.2.1 (17/09/2018)

Enrich the dune Emacs mode with syntax highlighting and indentation. New file dune-flymake to provide a hook dune-flymake-dune-mode-hook to enable linting of dune files. (#1265, @Chris00)
Pass link_flags to cc when compiling with Configurator.V1.c_test (#1274, @rgrinberg)
Fix digest calculation of aliases. It should take into account extra bindings passed to the alias (#1277, fix #1276, @rgrinberg)
Fix a bug causing dune to fail eagerly when an optional library isn't available (#1281, @diml)
ocamlmklib should use response files only if ocaml >= 4.08 (#1268, @bryphe)

1.2.0 (14/09/2018)

Ignore stderr output when trying to find out the number of jobs available (#1118, fix #1116, @diml)
Fix error message when the source directory of copy_files does not exist. (#1120, fix #1099, @emillon)
Highlight error locations in error messages (#1121, @emillon)
Display actual stanza when package is ambiguous (#1126, fix #1123, @emillon)
Add dune unstable-fmt to format dune files. The interface and syntax are still subject to change, so use with caution. (#1130, fix #940, @emillon)
Improve error message for dune utop without a library name (#1154, fix #1149, @emillon)
Fix parsing ocamllex stanza in jbuild files (#1150, @rgrinberg)
Highlight multi-line errors (#1131, @anuragsoni)
Do no try to generate shared libraries when this is not supported by the OS (#1165, fix #1051, @diml)
Fix Flags.write_{sexp,lines} in configurator by avoiding the use of Stdune.Path (#1175, fix #1161, @rgrinberg)
Add support for findlib.dynload: when linking an executable using findlib.dynload, automatically record linked in libraries and findlib predicates (#1172, @bobot)
Add support for promoting a selected list of files (#1192, @diml)
Add an emacs mode providing helpers to promote correction files (#1192, @diml)
Improve message suggesting to remove parentheses (#1196, fix #1173, @emillon)
Add (wrapped (transition "..message..")) as an option that will generate wrapped modules but keep unwrapped modules with a deprecation message to preserve compatibility. (#1188, fix #985, @rgrinberg)
Fix the flags passed to the ppx rewriter when using staged_pps (#1218, @diml)
Add (env var) to add a dependency to an environment variable. (#1186, @emillon)
Add a simple version of a polling mode: dune build -w keeps running and restarts the build when something change on the filesystem (#1140, @kodek16)
Cleanup the way we detect the library search path. We no longer call opam config var lib in the default build context (#1226, @diml)
Make test stanzas honor the -p flag. (#1236, fix #1231, @emillon)
Test stanzas take an optional (action) field to customize how they run (#1248, #1195, @emillon)
Add support for private modules via the private_modules field (#1241, fix #427, @rgrinberg)
Add support for passing arguments to the OCaml compiler via a response file when the list of arguments is too long (#1256, @diml)
Do not print diffs by default when running inside dune (#1260, @diml)
Interpret $ dune build dir as building the default alias in dir. (#1259, @rgrinberg)
Make the dynlink library available without findlib installed (#1270, fix #1264, @rgrinberg)

1.1.1 (08/08/2018)

Fix $ jbuilder --dev (#1104, fixes #1103, @rgrinberg)
Fix dune exec when --build-dir is set to an absolute path (#1105, fixes #1101, @rgrinberg)
Fix duplicate profile argument in suggested command when an external library is missing (#1109, #1106, @emillon)
-opaque wasn't correctly being added to modules without an interface. (#1108, fix #1107, @rgrinberg)
Fix validation of library name fields and make sure this validation also applies when the name is derived from the public_name. (#1110, fix #1102, @rgrinberg)
Fix a bug causing the toplevel env stanza in the workspace file to be ignored when at least one context had (merlin) (#1114, @diml)

1.1.0 (06/08/2018)

Fix lookup of command line specified files when --root is given. Previously, passing in --root in conjunction with --workspace or --config would not work correctly (#997, @rgrinberg)
Add support for customizing env nodes in workspace files. The env stanza is now allowed in toplevel position in the workspace file, or for individual contexts. This feature requires (dune lang 1.1) (#1038, @rgrinberg)
Add enabled_if field for aliases and tests. This field controls whether the test will be ran using a boolean expression language. (#819, @rgrinberg)
Make name, names fields optional when a public_name, public_names field is provided. (#1041, fix #1000, @rgrinberg)
Interpret X in --libdir X as relative to PREFIX when X is relative (#1072, fix #1070, @diml)
Add support for multi directory libraries by writing (include_subdirs unqualified) (#1034, @diml)
Add (staged_pps ...) to support staged ppx rewriters such as ones using the OCaml typer like ppx_import (#1080, fix #193, @diml)
Use -opaque in the dev profile. This option trades off binary quality for compilation speed when compiling .cmx files. (#1079, fix #1058, @rgrinberg)
Fix placeholders in dune subst documentation (#1090, @emillon, thanks @trefis for the bug report)
Add locations to errors when a missing binary in PATH comes from a dune file (#1096, fixes #1095, @rgrinberg)

1.0.1 (19/07/2018)

Fix parsing of %{lib:name:file} forms (#1022, fixes #1019, @diml)

1.0.0 (10/07/2018)

Do not load the user configuration file when running inside dune (#700 @diml)
Do not infer ${null} to be a target (#693 fixes #694 @rgrinberg)
Introduce jbuilder.configurator library. This is a revived version of janestreet's configurator library with better cross compilation support, a versioned API, and no external dependencies. (#673, #678 #692, #695 @rgrinberg)
Register the transitive dependencies of compilation units as the compiler might read .cm* files recursively (#666, fixes #660, @emillon)
Fix a bug causing jbuilder external-lib-deps to crash (#723, @diml)
-j now defaults to the number of processing units available rather 4 (#726, @diml)
Fix attaching index.mld to documentation (#731, fixes #717 @rgrinberg)
Scan the file system lazily (#732, fixes #718 and #228, @diml)
Add support for setting the default ocaml flags and for build profiles (#419, @diml)
Display a better error messages when writing (inline_tests) in an executable stanza (#748, @diml)
Restore promoted files when they are deleted or changed in the source tree (#760, fix #759, @diml)
Fix a crash when using an invalid alias name (#762, fixes #761, @diml)
Fix a crash when using c files from another directory (#758, fixes #734, @diml)
Add an ignored_subdirs stanza to replace jbuild-ignore files (#767, @diml)
Fix a bug where Dune ignored previous occurrences of duplicated fields (#779, @diml)
Allow setting custom build directories using the --build-dir flag or DUNE_BUILD_DIR environment variable (#846, fix #291, @diml @rgrinberg)
In dune files, remove support for block (#| ... |#)) and sexp (#;) comments. These were very rarely used and complicate the language (#837, @diml)
In dune files, add support for block strings, allowing to nicely format blocks of texts (#837, @diml)
Remove hard-coded knowledge of ppx_driver and ocaml-migrate-parsetree when using a dune file (#576, @diml)
Make the output of Dune slightly more deterministic when run from inside Dune (#855, @diml)
Simplify quoting behavior of variables. All values are now multi-valued and whether a multi valued variable is allowed is determined by the quoting and substitution context it appears in. (#849, fix #701, @rgrinberg)
Fix documentation generation for private libraries. (#864, fix #856, @rgrinberg)
Use Marshal to store digest and incremental databases. This improves the speed of 0 rebuilds. (#817, @diml)

Allow setting environment variables in findlib.conf for cross compilation contexts. (#733, @rgrinberg)

Add a link_deps field to executables, to specify link-time dependencies like version scripts. (#879, fix #852, @emillon)
Rename files_recursively_in to source_tree to make it clearer it doesn't include generated files (#899, fix #843, @diml)
Present the menhir stanza as an extension with its own version (#901, @diml)
Improve the syntax of flags in (pps ...). Now instead of (pps (ppx1 -arg1 ppx2 (-foo x))) one should write (pps ppx1 -arg ppx2 -- -foo x) which looks nicer (#910, @diml)
Make (diff a b) ignore trailing cr on Windows and add (cmp a b) for comparing binary files (#904, fix #844, @diml)
Make dev the default build profile (#920, @diml)
Version dune-workspace and ~/.config/dune/config files (#932, @diml)
Add the ability to build an alias non-recursively from the command line by writing @@alias (#926, @diml)
Add a special default alias that defaults to (alias_rec install) when not defined by the user and make @@default be the default target (#926, @diml)
Forbid #require in dune files in OCaml syntax (#938, @diml)
Add %{profile} variable. (#938, @rgrinberg)
Do not require opam-installer anymore (#941, @diml)
Add the lib_root and libexec_root install sections (#947, @diml)
Rename path:file to dep:file (#944, @emillon)
Remove path-no-dep:file (#948, @emillon)
Adapt the behavior of dune subst for dune projects (#960, @diml)
Add the lib_root and libexec_root sections to install stanzas (#947, @diml)
Add a Configurator.V1.Flags module that improves the flag reading/writing API (#840, @avsm)
Add a tests stanza that simplified defining regular and expect tests (#822, @rgrinberg)
Change the subst subcommand to lookup the project name from the dune-project whenever it's available. (#960, @diml)
The subst subcommand no longer looks up the root workspace. Previously this detection would break the command whenever -p wasn't passed. (#960, @diml)
Add a # DUNE_GEN in META template files. This is done for consistency with # JBUILDER_GEN. (#958, @rgrinberg)
Rename the following variables in dune files:
- SCOPE_ROOT to project_root
- @ to targets
- ^ to deps < was renamed in this PR and latter deleted in favor or named dependencies. (#957, @rgrinberg)
Rename ROOT to workspace_root in dune files (#993, @diml)
Lowercase all built-in %{variables} in dune files (#956, @rgrinberg)
New syntax for naming dependencies: (deps (:x a b) (:y (glob_files *.c*))). This replaces the use for ${<} in dune files. (#950, @diml, @rgrinberg)
Fix detection of dynamic cycles, which in particular may appear when using (package ..) dependencies (#988, @diml)

1.0+beta20 (10/04/2018)

Add a documentation stanza. This stanza allows one to attach .mld files to opam packages. (#570 @rgrinberg)
Execute all actions (defined using (action ..)) in the context's environment. (#623 @rgrinberg)
Add a (universe) special dependency to specify that an action depend on everything in the universe. Jbuilder cannot cache the result of an action that depend on the universe (#603, fixes #255 @diml)
Add a (package <package>) dependency specification to indicate dependency on a whole package. Rules depending on whole package will be executed in an environment similar to the one we get once the package is installed (#624, @rgrinberg and @diml)
Don't pass -runtime-variant _pic on Windows (#635, fixes #573 @diml)
Display documentation in alphabetical order. This is relevant to packages, libraries, and modules. (#647, fixes #606 @rgrinberg)
Missing asm in ocaml -config on bytecode only architecture is no longer fatal. The same kind of fix is preemptively applied to C compilers being absent. (#646, fixes $637 @rgrinberg)
Use the host's PATH variable when running actions during cross compilation (#649, fixes #625 @rgrinberg)
Fix incorrect include (-I) flags being passed to odoc. These flags should be directories that include .odoc files, rather than the include flags of the libraries. (#652 fixes #651 @rgrinberg)
Fix a regression introduced by beta19 where the generated merlin files didn't include the right -ppx flags in some cases (#658 fixes #657 @diml)
Fix error message when a public library is defined twice. Before jbuilder would raise an uncaught exception (Fixes #661, @diml)
Fix several cases where external-lib-deps was returning too little dependencies (#667, fixes #644 @diml)
Place module list on own line in generated entry point mld (#670 @antron)
Cosmetic improvements to generated entry point mld (#653 @trefis)
Remove most useless parentheses from the syntax (#915, @diml)

1.0+beta19.1 (21/03/2018)

Fix regression introduced by beta19 where duplicate environment variables in Unix.environ would cause a fatal error. The first defined environment variable is now chosen. (#638 fixed by #640)
Use ';' as the path separator for OCAMLPATH on Cygwin (#630 fixed by #636 @diml).
Use the contents of the OCAMLPATH environment variable when not relying on ocamlfind (#642 @diml)

1.0+beta19 (14/03/2018)

Ignore errors during the generation of the .merlin (#569, fixes #568 and #51)
Add a workaround for when a library normally installed by the compiler is not installed but still has a META file (#574, fixes #563)
Do not depend on ocamlfind. Instead, hard-code the library path when installing from opam (#575)
Change the default behavior regarding the check for overlaps between local and installed libraries. Now even if there is no link time conflict, we don't allow an external dependency to overlap with a local library, unless the user specifies allow_overlapping_dependencies in the jbuild file (#587, fixes #562)
Expose a few more variables in jbuild files: ext_obj, ext_asm, ext_lib, ext_dll and ext_exe as well as ${ocaml-config:XXX} for most variables in the output of ocamlc -config (#590)
Add support for inline and inline expectation tests. The system is generic and should support several inline test systems such as ppx_inline_test, ppx_expect or qtest (#547)
Make sure modules in the current directory always have precedence over included directories (#597)
Add support for building executables as object or shared object files (#23)
Add a best mode which is native with fallback to byte-code when native compilation is not available (#23)
Fix locations reported in error messages (#609)
Report error when a public library has a private dependency. Previously, this would be silently ignored and install broken artifacts (#607).
Fix display when output is not a tty (#518)

1.0+beta18.1 (14/03/2018)

Reduce the number of simultaneously opened fds (#578)
Always produce an implementation for the alias module, for non-jbuilder users (Fix #576)
Reduce interleaving in the scheduler in an attempt to make Jbuilder keep file descriptors open for less long (#586)
Accept and ignore upcoming new library fields: ppx.driver, inline_tests and inline_tests.backend (#588)
Add a hack to be able to build ppxlib, until beta20 which will have generic support for ppx drivers

1.0+beta18 (25/02/2018)

Fix generation of the implicit alias module with 4.02. With 4.02 it must have an implementation while with OCaml >= 4.03 it can be an interface only module (#549)
Let the parser distinguish quoted strings from atoms. This makes possible to use "${v}" to concatenate the list of values provided by a split-variable. Concatenating split-variables with text is also now required to be quoted.
Split calls to ocamldep. Before ocamldep would be called once per library/executables stanza. Now it is called once per file (#486)
Make sure to not pass -I <stdlib-dir> to the compiler. It is useless and it causes problems in some cases (#488)
Don't stop on the first error. Before, jbuilder would stop its execution after an error was encountered. Now it continues until all branches have been explored (#477)
Add support for a user configuration file (#490)
Add more display modes and change the default display of Jbuilder. The mode can be set from the command line or from the configuration file (#490)
Allow to set the concurrency level (-j N) from the configuration file (#491)
Store artifacts for libraries and executables in separate directories. This ensure that Two libraries defined in the same directory can't see each other unless one of them depend on the other (#472)
Better support for mli/rei only modules (#489)
Fix support for byte-code only architectures (#510, fixes #330)
Fix a regression in external-lib-deps introduced in 1.0+beta17 (#512, fixes #485)
@doc alias will now build only documentation for public libraries. A new @doc-private alias has been added to build documentation for private libraries.
Refactor internal library management. It should now be possible to run jbuilder build @lint in Base for instance (#516)
Fix invalid warning about non-existent directory (#536, fixes #534)

1.0+beta17 (01/02/2018)

Make jbuilder aware that num is an external package in OCaml >= 4.06.0 (#358)
jbuilder exec will now rebuild the executable before running it if necessary. This can be turned off by passing --no-build (#345)
Fix jbuilder utop to work in any working directory (#339)
Fix generation of META synopsis that contains double quotes (#337)
Add S . to .merlin by default (#284)
Improve jbuilder exec to make it possible to execute non public executables. jbuilder exec path/bin will execute bin inside default (or specified) context relative to path. jbuilder exec /path will execute /path as absolute path but with the context's environment set appropriately. Lastly, jbuilder exec will change the root as to which paths are relative using the -root option. (#286)
Fix jbuilder rules printing rules when some binaries are missing (#292)
Build documentation for non public libraries (#306)
Fix doc generation when several private libraries have the same name (#369)
Fix copy# for C/C++ with Microsoft C compiler (#353)
Add support for cross-compilation. Currently we are supporting the opam-cross-x repositories such as opam-cross-windows (#355)
Simplify generated META files: do not generate the transitive closure of dependencies in META files (#405)
Deprecated ${!...}: the split behavior is now a property of the variable. For instance ${CC}, ${^}, ${read-lines:...} all expand to lists unless used in the middle of a longer atom (#336)
Add an (include ...) stanza allowing one to include another non-generated jbuild file in the current file (#402)
Add a (diff <file1> <file2>) action allowing to diff files and promote generated files in case of mismatch (#402, #421)
Add jbuilder promote and --auto-promote to promote files (#402, #421)
Report better errors when using (glob_files ...) with a directory that doesn't exist (#413, Fix #412)
Jbuilder now properly handles correction files produced by ppx_driver. This allows to use [@@deriving_inline] in .ml/.mli files. This require ppx_driver >= v0.10.2 to work properly (#415)
Make jbuilder load rules lazily instead of generating them all eagerly. This speeds up the initial startup time of jbuilder on big workspaces (#370)
Now longer generate a META.pkg.from-jbuilder file. Now the only way to customize the generated META file is through META.pkg.template. This feature was unused and was making the code complicated (#370)
Remove read-only attribute on Windows before unlink (#247)
Use /Fo instead of -o when invoking the Microsoft C compiler to eliminate deprecation warning when compiling C++ sources (#354)
Add a mode field to rule stanzas:
- (mode standard) is the default
- (mode fallback) replaces (fallback)
- (mode promote) means that targets are copied to the source tree after the rule has completed
- (mode promote-until-clean) is the same as (mode promote) except that jbuilder clean deletes the files copied to the source tree. (#437)
Add a flag --ignore-promoted-rules to make jbuilder ignore rules with (mode promote). -p implies --ignore-promoted-rules (#437)
Display a warning for invalid lines in jbuild-ignore (#389)
Always build boot.exe as a bytecode program. It makes the build of jbuilder faster and fix the build on some architectures (#463, fixes #446)
Fix bad interaction between promotion and incremental builds on OSX (#460, fix #456)
Make the beginning of a new build more explicit in watch mode (#2542 @diml)

1.0+beta16 (05/11/2017)

Fix build on 32-bit OCaml (#313)

1.0+beta15 (04/11/2017)

Change the semantic of aliases: there are no longer aliases that are recursive such as install or runtest. All aliases are non-recursive. However, when requesting an alias from the command line, this request the construction of the alias in the specified directory and all its children recursively. This allows users to get the same behavior as previous recursive aliases for their own aliases, such as example. Inside jbuild files, one can use (deps (... (alias_rec xxx) ...)) to get the same behavior as on the command line. (#268)
Include sub libraries that have a . in the generated documentation index (#280).
Fix "up" links to the top-level index in the odoc generated documentation (#282).
Fix ARCH_SIXTYFOUR detection for OCaml 4.06.0 (#303)

1.0+beta14 (11/10/2017)

Add (copy_files ) and (copy_files# ) stanzas. These stanzas setup rules for copying files from a sub-directory to the current directory. This provides a reasonable way to support multi-directory library/executables in jbuilder (#35, @bobot)
An empty jbuild-workspace file is now interpreted the same as one containing just (context default)
Better support for on-demand utop toplevels on Windows and when the library has C stubs
Print Entering directory '...' when the workspace root is not the current directory. This allows Emacs and Vim to know where relative filenames should be interpreted from. (fixes #138, @jeremiedimino)
Fix a bug related to menhir stanzas: menhir stanzas with a merge_into field that were in jbuild files in sub-directories where incorrectly interpreted (#264)
Add support for locks in actions, for tests that can't be run concurrently (#263)
Support ${..} syntax in the include stanza. (#231)

1.0+beta13 (05/09/2017)

Generate toplevel html index for documentation (#224, @samoht)
Fix recompilation of native artifacts. Regression introduced in the last version (1.0+beta12) when digests replaces timestamps for checking staleness (#238, @dra27)

1.0+beta12 (18/08/2017)

Fix the quoting of FLG lines in generated .merlin files (#200, @mseri)
Use the full path of archive files when linking. Before jbuilder would do: -I <path> file.cmxa, now it does -I <path> <path>/file.cmxa. Fixes #118 and #177
Use an absolute path for ppx drivers in .merlin files. Merlin <3.0.0 used to run ppx commands from the directory where the .merlin was present but this is no longer the case
Allow to use jbuilder install in contexts other than opam; if ocamlfind is present in the PATH and the user didn't pass --prefix or --libdir explicitly, use the output of ocamlfind printconf destdir as destination directory for library files (#179, @bobot)
Allow (:include ...) forms in all *flags fields (#153, @dra27)
Add a utop subcommand. Running jbuilder utop in a directory builds and executes a custom utop toplevel with all libraries defined in the current directory (#183, @rgrinberg)
Do not accept per_file anymore in preprocess field. per_file was renamed per_module and it is planned to reuse per_file for another purpose
Warn when a file is both present in the source tree and generated by a rule. Before, jbuilder would silently ignore the rule. One now has to add a field (fallback) to custom rules to keep the current behavior (#218)
Get rid of the deprecated-ppx-method findlib package for ppx rewriters (#222, fixes #163)
Use digests (MD5) of files contents to detect changes rather than just looking at the timestamps. We still use timestamps to avoid recomputing digests. The performance difference is negligible and we avoid more useless recompilations, especially when switching branches for instance (#209, fixes #158)

1.0+beta11 (21/07/2017)

Fix the error message when there are more than one <package>.opam file for a given package
Report an error when in a wrapped library, a module that is not the toplevel module depends on the toplevel module. This doesn't make as such a module would in theory be inaccessible from the outside
Add ${SCOPE_ROOT} pointing to the root of the current scope, to fix some misuses of ${ROOT}
Fix useless hint when all missing dependencies are optional (#137)
Fix a bug preventing one from generating META.pkg.template with a custom rule (#190)
Fix compilation of reason projects: .rei files where ignored and caused the build to fail (#184)

1.0+beta10 (08/06/2017)

Add a clean subcommand (@rdavison, #89)
Add support for generating API documentation with odoc (#74)
Don't use unix in the bootstrap script, to avoid surprises with Cygwin
Improve the behavior of jbuilder exec on Windows
Add a --no-buffer option to see the output of commands in real-time. Should only be used with -j1
Deprecate per_file in preprocessing specifications and rename it per_module
Deprecate copy-and-add-line-directive and rename it copy#
Remove the ability to load arbitrary libraries in jbuild file in OCaml syntax. Only unix is supported since a few released packages are using it. The OCaml syntax might eventually be replaced by a simpler mechanism that plays better with incremental builds
Properly define and implement scopes
Inside user actions, ${^} now includes files matches by (glob_files ...) or (file_recursively_in ...)
When the dependencies and targets of a rule can be inferred automatically, you no longer need to write them: (rule (copy a b))
Inside (run ...), ${xxx} forms that expands to lists can now be split across multiple arguments by adding a !: ${!xxx}. For instance: (run foo ${!^})
Add support for using the contents of a file inside an action:
- ${read:<file>}
- ${read-lines:<file>}
- ${read-strings:<file>} (same as read-lines but lines are escaped using OCaml convention)
When exiting prematurely because of a failure, if there are other background processes running and they fail, print these failures
With msvc, -lfoo is transparently replaced by foo.lib (@dra27, #127)
Automatically add the .exe when installing executables on Windows (#123)
(run <prog> ...) now resolves <prog> locally if possible. i.e. (run ${bin:prog} ...) and (run prog ...) behave the same. This seems like the right default
Fix a bug where jbuild rules would crash instead of reporting a proper build error
Fix a race condition in future.ml causing jbuilder to crash on Windows in some cases (#101)
Fix a bug causing ppx rewriter to not work properly when using multiple build contexts (#100)
Fix .merlin generation: projects in the same workspace are added to merlin's source path, so "locate" works on them.

1.0+beta9 (19/05/2017)

Add support for building Reason projects (@rgrinberg, #58)
Add support for building javascript with js-of-ocaml (@hhugo, #60)
Better support for topkg release workflow. See topkg-jbuilder for more details
Port the manual to rst and setup a jbuilder project on readthedocs.org (@rgrinberg, #78)
Hint for mistyped targets. Only suggest correction on the basename for now, otherwise it's slow when the workspace is big
Add a (package ...) field for aliases, so that one can restrict tests to a specific package (@rgrinberg, #64)
Fix a couple of bugs on Windows:
- fix parsing of end of lines in some cases
- do not take the case into account when comparing environment variable names
Add AppVeyor CI
Better error message in case a chain of dependencies crosses the installed world
Better error messages for invalid dependency list in jbuild files
Several improvements/fixes regarding the handling of findlib packages:
- Better error messages when a findlib package is unavailable
- Don't crash when an installed findlib package has missing dependencies
- Handle the findlib alternative directory layout which is still used by a few packages
Add jbuilder installed-libraries --not-available explaining why some libraries are not available
jbuilder now records dependencies on files of external libraries. This mean that when you upgrade a library, jbuilder will know what need to be rebuilt.
Add a jbuilder rules subcommand to dump internal compilation rules, mostly for debugging purposes
Ignore all directories starting with a . or _. This seems to be a common pattern:
- .git, .hg, _darcs
- _build
- _opam (opam 2 local switches)
Fix the hint for jbuilder external-lib-deps (#72)
Do not require ocamllex and ocamlyacc to be at the same location as ocamlc (#75)

1.0+beta8 (17/04/2017)

Added ${lib-available:<library-name>} which expands to true or false with the same semantic as literals in (select ...) stanzas
Remove hard-coded knowledge of a few specific ppx rewriters to ease maintenance moving forward
Pass the library name to ppx rewriters via the library-name cookie
Fix: make sure the action working directory exist before running it

1.0+beta7 (12/04/2017)

Make the output quieter by default and add a --verbose argument (@stedolan, #40)
Various documentation fixes (@adrieng, #41)
Make @install the default target when no targets are specified (@stedolan, #47)
Add predefined support for menhir, similar to ocamlyacc support (@rgrinberg, #42)
Add internal support for sandboxing actions and sandbox the build of the alias module with 4.02 to workaround the compiler trying to read the cmi of the aliased modules
Allow to disable dynlink support for libraries via (no_dynlink) (#55)
Add a -p/--for-release-of-packages command line argument to simplify the jbuilder invocation in opam files and make it more future proof (#52)
Fix the lookup of the executable in jbuilder exec foo. Before, even if foo was to be installed, the freshly built version wasn't selected
Don't generate a exists_if ... lines in META files. These are useless sine the META files are auto-generated

1.0+beta6 (29/03/2017)

Add an (executable ...) stanza for single executables (#33)
Add a (package ...) and (public_name <name>)/(public_names (<names)) to executable/executables stanzas to make it easier to install executables (#33)
Fix a bug when using specific rewriters that jbuilder knows about without ppx_driver.runner (#37). These problem should go away soon when we start using --cookie
Fix the interpretation of META files when there is more than one applicable assignment. Before this fix, the one with the lowest number of formal predicates was selected instead of the one with the biggest number of formal predicates

1.0+beta5 (22/03/2017)

When ocamlfind is present in the PATH, do not attempt to call opam config var lib
Make sure the build of jbuilder itself never calls ocamlfind or opam
Better error message when a jbuild file in OCaml syntax forgets to call Jbuild_plugin.V*.send
Added examples of use
Don't drop inline tests/benchmarks by default

1.0+beta4 (20/03/2017)

Improve error messages about invalid/missing pkg.opam files
Ignore all errors while running ocamlfind printconf path

1.0+beta3 (15/03/2017)

Print optional dependencies as optional in the output of jbuilder external-lib-deps --missing
Added a few forms to the DSL:
- with-{stderr,outputs}-to
- ignore-{stdout,stderr,outputs}
Added ${null} which expands to /dev/null on Unix and NUL on Windows
Improve the doc generated by odoc for wrapped libraries
Improve the error reported when an installed package depends on a library that is not installed
Documented (files_recursively_in ...)
Added black box tests
Fix a bug where jbuilder would crash when there was no <package>.opam file
Fixed a bug where .merlin files where not generated at the root of the workspace (#20)
Fix a bug where a (glob_files ...) would cause other dependencies to be ignored
Fix the generated ppx(...) line in META files
Fix (optional) when a ppx runtime dependency is not available (#24)
Do not crash when an installed package that we don't need has missing dependencies (#25)

1.0+beta2 (10/03/2017)

Simplified the rules for finding the root of the workspace as the old ones were often picking up the home directory. New rules are:
- look for a jbuild-workspace file in parent directories
- look for a jbuild-workspace* file in parent directories
- use the current directory
Fixed the expansion of ${ROOT} in actions
Install quick-start.org in the documentation directory
Add a few more things in the log file to help debugging

1.0+beta1 (07/03/2017)

Added a manual
Support incremental compilation
Switched the CLI to cmdliner and added a build command (#5, @rgrinberg)
Added a few commands:
- runtest
- install
- uninstall
- installed-libraries
- exec: execute a command in an environment similar to what you would get after jbuilder install
Removed the build-package command in favor of a --only-packages option that is common to all commands
Automatically generate .merlin files (#2, @rdavison)
Improve the output of jbuilder, in particular don't mangle the output of commands when using -j N with N > 1
Generate a log in _build/log
Versioned the jbuild format and added a first stable version. You should now put (jbuilder_version 1) in a jbuild file at the root of your project to ensure forward compatibility
Switch from ppx_driver to ocaml-migrate-parsetree.driver. In order to use ppx rewriters with Jbuilder, they need to use ocaml-migrate-parsetree.driver
Added support for aliases (#7, @rgrinberg)
Added support for compiling against multiple opam switch simultaneously by writing a jbuild-workspace file
Added support for OCaml 4.02.3
Added support for architectures that don't have natdynlink
Search the root according to the rules described in the manual instead of always using the current directory
extended the action language to support common actions without using a shell:
- (with-stdout-to <file> <DSL>)
- (copy <src> <dst>)
- ...
Removed all implicit uses of bash or the system shell. Now one has to write explicitly (bash "...") or (system "...")
Generate meaningful versions in META files
Strengthen the scope of a package. Jbuilder knows about package foo only in the sub-tree starting from where foo.opam lives

0.1.alpha1 (04/12/2016)

First release

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