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feature: allow arch_sixtyfour in enabled_if #8023

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Aug 4, 2023
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feature: allow arch_sixtyfour in enabled_if #8023

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3 changes: 3 additions & 0 deletions doc/changes/8023.md
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@@ -0,0 +1,3 @@

- `enabled_if` now supports `arch_sixtyfour` variable (#8023, fixes #7997,
@Alizter)
2 changes: 2 additions & 0 deletions src/dune_rules/enabled_if.ml
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Expand Up @@ -18,6 +18,7 @@ let common_vars_list =
; "profile"
; "ocaml_version"
; "context_name"
; "arch_sixtyfour"
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I'm not sure how versioning is supposed to work here. For example, (rule) uses ~allowed_vars:Any so this means that it will accept arch_sixtyfour even with lang dune 1.4 (this affects context_name too). @rgrinberg do you know how this is supposed to work?

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Maybe that is intentional to not restrict the user from writing a rule?

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that's not correct. it means a dune file can be valid or not depending on the version of the dune binary, which we try to avoid.

]
;;

Expand All @@ -27,6 +28,7 @@ let common_vars ~since =
~f:(fun var ->
match var with
| "context_name" -> var, (2, 7)
| "arch_sixtyfour" -> var, (3, 11)
| _ -> var, since)
common_vars_list)
;;
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4 changes: 4 additions & 0 deletions test/blackbox-tests/test-cases/enabled_if/eif-arch_sixtyfour.t/dune
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(executable
(name hello)
(enabled_if
(= %{arch_sixtyfour} %{arch_sixtyfour})))
1 change: 1 addition & 0 deletions test/blackbox-tests/test-cases/enabled_if/eif-arch_sixtyfour.t/hello.ml
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let () = Printf.printf "Hello, World!\n"
22 changes: 22 additions & 0 deletions test/blackbox-tests/test-cases/enabled_if/eif-arch_sixtyfour.t/run.t
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Testing %{arch_sixtyfour} in enabled_if

$ cat > dune-project << EOF
> (lang dune 3.11)
> EOF

$ dune exec -- ./hello.exe
Hello, World!

Testing the version guard

$ cat > dune-project << EOF
> (lang dune 3.10)
> EOF

$ dune exec -- ./hello.exe
File "dune", line 4, characters 5-22:
4 | (= %{arch_sixtyfour} %{arch_sixtyfour})))
^^^^^^^^^^^^^^^^^
Error: %{arch_sixtyfour} is only available since version 3.11 of the dune
language. Please update your dune-project file to have (lang dune 3.11).
[1]
12 changes: 6 additions & 6 deletions test/blackbox-tests/test-cases/enabled_if/eif-exec-forbidden_var.t/run.t
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Expand Up @@ -8,9 +8,9 @@ The next ones use forbidden variables For dune 2.3 -> 2.5 it is a warning
3 | (enabled_if (<> %{project_root} "")))
^^^^^^^^^^^^^^^
Warning: Only architecture, system, model, os_type, ccomp_type, profile,
ocaml_version and context_name variables are allowed in this 'enabled_if'
field. If you think that project_root should also be allowed, please file an
issue about it.
ocaml_version, context_name and arch_sixtyfour variables are allowed in this
'enabled_if' field. If you think that project_root should also be allowed,
please file an issue about it.
bar

For dune >= 2.6 it is an error
Expand All @@ -22,7 +22,7 @@ For dune >= 2.6 it is an error
3 | (enabled_if (<> %{project_root} "")))
^^^^^^^^^^^^^^^
Error: Only architecture, system, model, os_type, ccomp_type, profile,
ocaml_version and context_name variables are allowed in this 'enabled_if'
field. If you think that project_root should also be allowed, please file an
issue about it.
ocaml_version, context_name and arch_sixtyfour variables are allowed in this
'enabled_if' field. If you think that project_root should also be allowed,
please file an issue about it.
[1]
6 changes: 3 additions & 3 deletions test/blackbox-tests/test-cases/enabled_if/eif-install-forbidden_var.t/run.t
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Expand Up @@ -4,7 +4,7 @@ Tests for enabled_if in install stanza using forbidden variable.
6 | (enabled_if (= %{project_root} ""))
^^^^^^^^^^^^^^^
Error: Only architecture, system, model, os_type, ccomp_type, profile,
ocaml_version and context_name variables are allowed in this 'enabled_if'
field. If you think that project_root should also be allowed, please file an
issue about it.
ocaml_version, context_name and arch_sixtyfour variables are allowed in this
'enabled_if' field. If you think that project_root should also be allowed,
please file an issue about it.
[1]