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Stack is slow to print "> using precompiled package" #6680

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chreekat opened this issue Jan 29, 2025 · 3 comments
Open

Stack is slow to print "> using precompiled package" #6680

chreekat opened this issue Jan 29, 2025 · 3 comments

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@chreekat
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The first ~dozen are fast, but eventually it slows down.

I ran stack -v build. Below are all the debug messages between three of the "> using precompiled package" lines. (The entire output is also attached). If you look at the timestamps, indexed-traversable is obviously fast, and ansi-terminal is very slow by comparison.

All of the other slow packages also have a bunch of debug output and sqlite activity.

This behavior showed up unexpectedly when I changed one of my dependencies. I added an extra-dep that overrode version of amazonka that was being used from the snapshot. Although this won't help with repro, I'll show the change that triggered the behavior for context:

extra-deps:
 # <snip>

 # This amazonka includes the unreleased patch to support Cloudflare, which kinda
 # has a bug. See https://github.com/brendanhay/amazonka/issues/975 for details. 
 - github: brendanhay/amazonka                                                   
   commit: '85e0289f8dc23c54b00f7f1a09845be7e032a1eb'                            
   subdirs:                                                                      
     # This has the patch                                                        
     - lib/amazonka-core                                                         
     # This one has a build failure if taken from lts-22.7                       
     - lib/services/amazonka-s3                                                  
+    # Same                                                                      
+    - lib/amazonka

Before that change, the project built quickly and didn't print any "using precompiled package" messages, slowly or otherwise.

Here's the log "snippet":

2025-01-29 13:13:36.855748: [info] hourglass                        > using precompiled package
2025-01-29 13:13:36.864073: [debug] (SQL) SELECT "id","platform_ghc_dir","compiler","cabal_version","package_key","options_hash","haddock","library" FROM "precompiled_cache" WHERE "platform_ghc_dir"=? AND "compiler"=? AND "cabal_version"=? AND "package_key"=? AND "options_hash"=? AND "haddock"=?; [PersistText "x86_64-linux-nix/",PersistText "ghc-9.6.4",PersistText "3.10.1.0",PersistText "181cff1f160115b7ed52b9da8f4f9d10e7042821f74b23381044661120f180e6,625",PersistByteString "8^g{\239X\158\166\208\240\149\195Q\143,\164<:\DELO\DC2\179<\NUL\137\243XL\189\237\&6\210",PersistBool False]
2025-01-29 13:13:36.865894: [debug] (SQL) SELECT "id", "precompiled_cache_id", "sub_lib" FROM "precompiled_cache_sub_lib" WHERE ("precompiled_cache_id"=?); [PersistInt64 7152]
2025-01-29 13:13:36.866077: [debug] (SQL) SELECT "id", "precompiled_cache_id", "exe" FROM "precompiled_cache_exe" WHERE ("precompiled_cache_id"=?); [PersistInt64 7152]
2025-01-29 13:13:36.866192: [info] indexed-traversable              > using precompiled package
2025-01-29 13:13:36.870933: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/Cabal-syntax-3.10.1.0.conf
2025-01-29 13:13:36.874497: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/array-0.5.6.0.conf
2025-01-29 13:13:36.875350: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/base-4.18.2.0.conf
2025-01-29 13:13:36.879509: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/binary-0.8.9.1.conf
2025-01-29 13:13:36.880287: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/bytestring-0.11.5.3.conf
2025-01-29 13:13:36.881788: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/containers-0.6.7.conf
2025-01-29 13:13:36.883055: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/deepseq-1.4.8.1.conf
2025-01-29 13:13:36.883785: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/directory-1.3.8.1.conf
2025-01-29 13:13:36.884549: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/exceptions-0.10.7.conf
2025-01-29 13:13:36.885430: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/filepath-1.4.200.1.conf
2025-01-29 13:13:36.886677: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/ghc-9.6.4.conf
2025-01-29 13:13:36.896734: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/ghc-bignum-1.3.conf
2025-01-29 13:13:36.897889: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/ghc-boot-9.6.4.conf
2025-01-29 13:13:36.898938: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/ghc-boot-th-9.6.4.conf
2025-01-29 13:13:36.899914: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/ghc-compact-0.1.0.0.conf
2025-01-29 13:13:36.900630: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/ghc-heap-9.6.4.conf
2025-01-29 13:13:36.901454: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/ghc-prim-0.10.0.conf
2025-01-29 13:13:36.902384: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/ghci-9.6.4.conf
2025-01-29 13:13:36.903193: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/haskeline-0.8.2.1.conf
2025-01-29 13:13:36.904498: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/hpc-0.6.2.0.conf
2025-01-29 13:13:36.905128: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/integer-gmp-1.1.conf
2025-01-29 13:13:36.905895: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/libiserv-9.6.4.conf
2025-01-29 13:13:36.906461: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/mtl-2.3.1.conf
2025-01-29 13:13:36.907264: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/parsec-3.1.16.1.conf
2025-01-29 13:13:36.908396: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/pretty-1.1.3.6.conf
2025-01-29 13:13:36.909078: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/process-1.6.17.0.conf
2025-01-29 13:13:36.910001: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/rts-1.0.2.conf
2025-01-29 13:13:36.911928: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/stm-2.5.1.0.conf
2025-01-29 13:13:36.912827: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/system-cxx-std-lib-1.0.conf
2025-01-29 13:13:36.913230: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/template-haskell-2.20.0.0.conf
2025-01-29 13:13:36.914358: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/terminfo-0.4.1.6.conf
2025-01-29 13:13:36.915189: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/text-2.0.2.conf
2025-01-29 13:13:36.917001: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/time-1.12.2.conf
2025-01-29 13:13:36.918542: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/transformers-0.6.1.0.conf
2025-01-29 13:13:36.919677: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/unix-2.8.4.0.conf
2025-01-29 13:13:36.921221: [debug] Reading package config:
/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib/ghc-9.6.4/lib/package.conf.d/xhtml-3000.2.2.1.conf
2025-01-29 13:13:36.922314: [debug] Run process: /nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/bin/ghc-pkg-9.6.4 --no-user-package-db --package-db=/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/ register --force /home/b/.stack/snapshots/x86_64-linux-nix/39a92b495c4e9c5db79ef04867654e8cd6a2045e38545a7278632e1a009b9043/9.6.4/pkgdb/ansi-terminal-types-0.11.5-7QpUULXXpCL6RLITE1JUOk.conf
2025-01-29 13:13:37.032091: [debug] Process finished in 110ms: /nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/bin/ghc-pkg-9.6.4 --no-user-package-db --package-db=/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/ register --force /home/b/.stack/snapshots/x86_64-linux-nix/39a92b495c4e9c5db79ef04867654e8cd6a2045e38545a7278632e1a009b9043/9.6.4/pkgdb/ansi-terminal-types-0.11.5-7QpUULXXpCL6RLITE1JUOk.conf
2025-01-29 13:13:37.032372: [debug] Run process: /nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/bin/ghc-pkg-9.6.4 --user --no-user-package-db --package-db /home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb describe --simple-output ansi-terminal-types --expand-pkgroot
2025-01-29 13:13:37.033551: [debug] Unregistering from
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/:
blaze-html-0.9.1.2.
2025-01-29 13:13:37.034926: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/OneTuple-0.4.1.1-413yz2qDv5HLK54zgzfSJ3.conf
2025-01-29 13:13:37.036830: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/Only-0.1-2OJr6Dq0xOm75uZ80XlI7x.conf
2025-01-29 13:13:37.038953: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/StateVar-1.2.2-LMwI0SGrUtP1MlPXMPkYAS.conf
2025-01-29 13:13:37.072635: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/annotated-wl-pprint-0.7.0-2QW85nLxF0QDC21sjKmQFb.conf
2025-01-29 13:13:37.074845: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/appar-0.1.8-2UYkbPOz3CVDU6UBsF1opz.conf
2025-01-29 13:13:37.076899: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/auto-update-0.1.6-ADHZym4WmY5G8RwewI8v4E.conf
2025-01-29 13:13:37.078920: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/base-compat-0.13.1-G7NGIqA1Gm7N8bViVREwP.conf
2025-01-29 13:13:37.082818: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/base-orphans-0.9.1-KAZ8G7uKs3r7jrb0e6niG4.conf
2025-01-29 13:13:37.084927: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/base16-bytestring-1.0.2.0-30XYP7z649IagQeQTppof.conf
2025-01-29 13:13:37.087094: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/base64-bytestring-1.2.1.0-K1erZvkjHObEU0kBt3tz3o.conf
2025-01-29 13:13:37.089290: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/basement-0.0.16-DD6H8SGD4AW2EysJRRfDZR.conf
2025-01-29 13:13:37.094395: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/blaze-builder-0.4.2.3-KqOYhpYf1HiJNpffbEN3Kt.conf
2025-01-29 13:13:37.098232: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/bsb-http-chunked-0.0.0.4-IC9ZPBN6tEZ1OZx3ALxxCt.conf
2025-01-29 13:13:37.101419: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/byteable-0.1.1-4CNQdo3Prm7AURHENelJp7.conf
2025-01-29 13:13:37.104815: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/byteorder-1.0.4-KgHnyAnKoyVGvIK2rOLowO.conf
2025-01-29 13:13:37.107845: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/cabal-doctest-1.0.9-BNPaF3kbrctJvYhpvWMgHi.conf
2025-01-29 13:13:37.110974: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/call-stack-0.4.0-5ydnsiRoTiXIBqpTNw0DxP.conf
2025-01-29 13:13:37.114458: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/cereal-0.5.8.3-9sqHuqlzPicJDqNz9TSzXN.conf
2025-01-29 13:13:37.114772: [debug] Process finished in 82ms: /nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/bin/ghc-pkg-9.6.4 --user --no-user-package-db --package-db /home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb describe --simple-output ansi-terminal-types --expand-pkgroot
2025-01-29 13:13:37.116909: [debug] (SQL) SELECT "id","directory","type","pkg_src","active","path_env_var","haddock" FROM "config_cache" WHERE "directory"=? AND "type"=?; [PersistText "/home/b/worktrees/stackage-server/b/cabal-nix/.stack-work/install/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/",PersistText "lib:ansi-terminal-types-0.11.5-7QpUULXXpCL6RLITE1JUOk"]
2025-01-29 13:13:37.118743: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/clock-0.8.4-3bdbhUDgwcB9MPcgrlycwm.conf
2025-01-29 13:13:37.120507: [debug] (SQL) INSERT INTO "config_cache"("directory","type","pkg_src","active","path_env_var","haddock") VALUES(?,?,?,?,?,?); [PersistText "/home/b/worktrees/stackage-server/b/cabal-nix/.stack-work/install/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/",PersistText "lib:ansi-terminal-types-0.11.5-7QpUULXXpCL6RLITE1JUOk",PersistText "upstream",PersistBool True,PersistText "/nix/store/x9d49vaqlrkw97p9ichdwrnbh013kq7z-bash-interactive-5.2p37/bin:/nix/store/wnl9qpnhayry14lhcbdafhadsjwsdr6p-patchelf-0.15.0/bin:/nix/store/k09kpzc49l0q7cikc7jbm5vhangikl6a-postgresql-16.6-dev/bin:/nix/store/s5gx0m0pxn0lgwp381jmpsbb7hcmyqqj-postgresql-16.6/bin:/nix/store/2gc1mdxn6whvjscqibxkfaamfhspbmcd-pkg-config-wrapper-0.29.2/bin:/nix/store/r3br2rakxvsds5nsk362iix79hfxzq7b-haskell-language-server-2.9.0.0/bin:/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/bin:/nix/store/7793j1am5j1pj6d3p7fr8z9q671m6wkc-git-2.47.2/bin:/nix/store/888bkaqdpfpx72dd8bdc69qsqlgbhcvf-gcc-wrapper-13.3.0/bin:/nix/store/62qjb50708fdhb4f2y7zxyqr1afir4fk-gcc-13.3.0/bin:/nix/store/29mb4q8b5306f4gk2wh38h0c1akb0n97-glibc-2.40-36-bin/bin:/nix/store/6wgd8c9vq93mqxzc7jhkl86mv6qbc360-coreutils-9.5/bin:/nix/store/qlzvmgr8w9prdlyys7irqf86p7bndf5b-binutils-wrapper-2.43.1/bin:/nix/store/vk4mlknqk9yjbqa68a7rvpfxfdw3rad7-binutils-2.43.1/bin:/nix/store/k3a7dzrqphj9ksbb43i24vy6inz8ys51-ncurses-6.4.20221231/bin:/nix/store/6wgd8c9vq93mqxzc7jhkl86mv6qbc360-coreutils-9.5/bin:/nix/store/r99d2m4swgmrv9jvm4l9di40hvanq1aq-findutils-4.10.0/bin:/nix/store/3sln66ij8pg114apkd8p6nr04y37q5z2-diffutils-3.10/bin:/nix/store/yq39xdwm4z0fhx7dsm8mlpgvcz3vbfg3-gnused-4.9/bin:/nix/store/vniy1y5n8g28c55y7788npwc4h09fh7c-gnugrep-3.11/bin:/nix/store/scgfwh3z1s3l2vhvyjsgfgx5ql552sls-gawk-5.3.1/bin:/nix/store/0wqn2k3v5xzrc9rwinijdyr2ywwl82x4-gnutar-1.35/bin:/nix/store/5y240z436gf3rwmkwbhn1a17pqw509w4-gzip-1.13/bin:/nix/store/1yyryxp7mh7zsciapi8f1n0mnxkigmf8-bzip2-1.0.8-bin/bin:/nix/store/hbzw8k8ygv6bfzvsvnd4gb8qmm8xjbvn-gnumake-4.4.1/bin:/nix/store/gwgqdl0242ymlikq9s9s62gkp5cvyal3-bash-5.2p37/bin:/nix/store/rfrjws98w6scfx7m63grb0m6sg925ahd-patch-2.7.6/bin:/nix/store/4i4mjaf7z6gddspar487grxk5k1j4dcd-xz-5.6.3-bin/bin:/nix/store/9wbpsj6ksd16x1qdqs29xli1dpz3fnl0-file-5.45/bin",PersistBool False]
2025-01-29 13:13:37.122522: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/cmark-gfm-0.2.6-E9kBFwt6gFYKe6gOT9gPEr.conf
2025-01-29 13:13:37.126078: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/cmdargs-0.10.22-83WnG7g72QcDcTY9CeATsx.conf
2025-01-29 13:13:37.126328: [debug] (SQL) SELECT "id" FROM "config_cache" WHERE _ROWID_=last_insert_rowid(); []
2025-01-29 13:13:37.127560: [debug] (SQL) DELETE FROM "config_cache_dir_option" WHERE ("config_cache_id"=?) AND (1=2); [PersistInt64 594]
2025-01-29 13:13:37.130847: [debug] (SQL) INSERT INTO "config_cache_dir_option"("config_cache_id","index","option") VALUES (?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?); [PersistInt64 594,PersistInt64 0,PersistText "--user",PersistInt64 594,PersistInt64 1,PersistText "--package-db=clear",PersistInt64 594,PersistInt64 2,PersistText "--package-db=global",PersistInt64 594,PersistInt64 3,PersistText "--package-db=/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb",PersistInt64 594,PersistInt64 4,PersistText "--libdir=/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/lib",PersistInt64 594,PersistInt64 5,PersistText "--bindir=/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/bin",PersistInt64 594,PersistInt64 6,PersistText "--datadir=/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/share",PersistInt64 594,PersistInt64 7,PersistText "--libexecdir=/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/libexec",PersistInt64 594,PersistInt64 8,PersistText "--sysconfdir=/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/etc",PersistInt64 594,PersistInt64 9,PersistText "--docdir=/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/doc/ansi-terminal-types-0.11.5",PersistInt64 594,PersistInt64 10,PersistText "--htmldir=/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/doc/ansi-terminal-types-0.11.5",PersistInt64 594,PersistInt64 11,PersistText "--haddockdir=/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/doc/ansi-terminal-types-0.11.5"]
2025-01-29 13:13:37.131767: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/colour-2.3.6-L6nsTBN10g6LEOaPT1DhwH.conf
2025-01-29 13:13:37.135293: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/base-compat-batteries-0.13.1-HJCVv1SaM2B87GijOeLP77.conf
2025-01-29 13:13:37.135519: [debug] (SQL) DELETE FROM "config_cache_no_dir_option" WHERE ("config_cache_id"=?) AND (1=2); [PersistInt64 594]
2025-01-29 13:13:37.137807: [debug] (SQL) INSERT INTO "config_cache_no_dir_option"("config_cache_id","index","option") VALUES (?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?),(?,?,?); [PersistInt64 594,PersistInt64 0,PersistText "--dependency=base=base-4.18.2.0",PersistInt64 594,PersistInt64 1,PersistText "--dependency=colour=colour-2.3.6-L6nsTBN10g6LEOaPT1DhwH",PersistInt64 594,PersistInt64 2,PersistText "--extra-include-dirs=/nix/store/06q0p7bhn2ffxxya20rrfqdib3h32csn-zlib-1.3.1-dev/include",PersistInt64 594,PersistInt64 3,PersistText "--extra-include-dirs=/nix/store/k09kpzc49l0q7cikc7jbm5vhangikl6a-postgresql-16.6-dev/include",PersistInt64 594,PersistInt64 4,PersistText "--extra-include-dirs=/nix/store/2gc1mdxn6whvjscqibxkfaamfhspbmcd-pkg-config-wrapper-0.29.2/include",PersistInt64 594,PersistInt64 5,PersistText "--extra-include-dirs=/nix/store/r3br2rakxvsds5nsk362iix79hfxzq7b-haskell-language-server-2.9.0.0/include",PersistInt64 594,PersistInt64 6,PersistText "--extra-include-dirs=/nix/store/3skhm0g57g1g3cynnxmics388jvg163w-nss-cacert-3.107/include",PersistInt64 594,PersistInt64 7,PersistText "--extra-include-dirs=/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/include",PersistInt64 594,PersistInt64 8,PersistText "--extra-include-dirs=/nix/store/7793j1am5j1pj6d3p7fr8z9q671m6wkc-git-2.47.2/include",PersistInt64 594,PersistInt64 9,PersistText "--extra-include-dirs=/nix/store/888bkaqdpfpx72dd8bdc69qsqlgbhcvf-gcc-wrapper-13.3.0/include",PersistInt64 594,PersistInt64 10,PersistText "--extra-include-dirs=/nix/store/awr474gcqxa74764fkx8yvljlp09xp12-gmp-with-cxx-6.3.0-dev/include",PersistInt64 594,PersistInt64 11,PersistText "--extra-lib-dirs=/nix/store/l5g2v1jgfyf3j0jp9iv5b79fi8yrwzpp-zlib-1.3.1/lib",PersistInt64 594,PersistInt64 12,PersistText "--extra-lib-dirs=/nix/store/il7k91hccyf2ca5dczq48nam8nn13zqk-postgresql-16.6-lib/lib",PersistInt64 594,PersistInt64 13,PersistText "--extra-lib-dirs=/nix/store/2gc1mdxn6whvjscqibxkfaamfhspbmcd-pkg-config-wrapper-0.29.2/lib",PersistInt64 594,PersistInt64 14,PersistText "--extra-lib-dirs=/nix/store/r3br2rakxvsds5nsk362iix79hfxzq7b-haskell-language-server-2.9.0.0/lib",PersistInt64 594,PersistInt64 15,PersistText "--extra-lib-dirs=/nix/store/3skhm0g57g1g3cynnxmics388jvg163w-nss-cacert-3.107/lib",PersistInt64 594,PersistInt64 16,PersistText "--extra-lib-dirs=/nix/store/rmlaizhjgwfq49v6j12z06vwck9nl3hw-ghc-9.6.4/lib",PersistInt64 594,PersistInt64 17,PersistText "--extra-lib-dirs=/nix/store/7793j1am5j1pj6d3p7fr8z9q671m6wkc-git-2.47.2/lib",PersistInt64 594,PersistInt64 18,PersistText "--extra-lib-dirs=/nix/store/888bkaqdpfpx72dd8bdc69qsqlgbhcvf-gcc-wrapper-13.3.0/lib",PersistInt64 594,PersistInt64 19,PersistText "--extra-lib-dirs=/nix/store/cpyk8ksm7c79l0nabd576s80wngdzix5-gmp-with-cxx-6.3.0/lib",PersistInt64 594,PersistInt64 20,PersistText "--exact-configuration",PersistInt64 594,PersistInt64 21,PersistText "--ghc-option=-fhide-source-paths"]
2025-01-29 13:13:37.142916: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/conduit-combinators-1.3.0-IO4AjbfkVSt2tnnQKgF77V.conf
2025-01-29 13:13:37.146657: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/contravariant-1.5.5-KzhCBNYXMkYFS6JTj2kIRH.conf
2025-01-29 13:13:37.144109: [debug] (SQL) DELETE FROM "config_cache_dep" WHERE ("config_cache_id"=?) AND (1=2); [PersistInt64 594]
2025-01-29 13:13:37.147917: [debug] (SQL) INSERT INTO "config_cache_dep"("config_cache_id","ghc_pkg_id") VALUES (?,?),(?,?); [PersistInt64 594,PersistText "base-4.18.2.0",PersistInt64 594,PersistText "colour-2.3.6-L6nsTBN10g6LEOaPT1DhwH"]
2025-01-29 13:13:37.150270: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/cryptohash-md5-0.11.101.0-LlbmVuBbccu9tXNi6TxuHk.conf
2025-01-29 13:13:37.153619: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/cryptohash-sha1-0.11.101.0-52VKih8lnvCJbZmLfShIh1.conf
2025-01-29 13:13:37.157690: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/blaze-markup-0.8.3.0-2vtdi1m30QR7YYEGi2s89A.conf
2025-01-29 13:13:37.160985: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/cryptohash-sha256-0.11.102.1-EdprTK4ljZA2CfmacPS9ny.conf
2025-01-29 13:13:37.164851: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/data-default-class-0.1.2.0-DWa0eFdALruJzXj3E1ovxz.conf
2025-01-29 13:13:37.168115: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/digest-0.0.2.0-8Wrp4BM4ICxM46nCzZ1IN.conf
2025-01-29 13:13:37.171295: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/dlist-1.0-8ZSsfhwGOfJIXQNNI9Fv2.conf
2025-01-29 13:13:37.174685: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/HUnit-1.6.2.0-2aRzyZJbb23A4S28an7ssH.conf
2025-01-29 13:13:37.178050: [debug] (SQL) SELECT "id","platform_ghc_dir","compiler","cabal_version","package_key","options_hash","haddock","library" FROM "precompiled_cache" WHERE "platform_ghc_dir"=? AND "compiler"=? AND "cabal_version"=? AND "package_key"=? AND "options_hash"=? AND "haddock"=?; [PersistText "x86_64-linux-nix/",PersistText "ghc-9.6.4",PersistText "3.10.1.0",PersistText "d4405abe08cf99c47f2af8534346492a5679e17a19529667b3eeddad4c0f0149,1184",PersistByteString "\239\146\&5\170\246\247\176\166!\172\237\244.S\US`\247\181\DC4\CAN\223\151\199v\250\DC3\189\f\172Q\152s",PersistBool False]
2025-01-29 13:13:37.178927: [debug] Reading package config:
/home/b/.stack/snapshots/x86_64-linux-nix/de1476877c5ac81108c78c024ecb0dc2066383ecf34f2d67504e0b8a1016f437/9.6.4/pkgdb/easy-file-0.2.5-HQl9n3284dh5L5XuBaANaK.conf
2025-01-29 13:13:37.179306: [debug] (SQL) SELECT "id", "precompiled_cache_id", "sub_lib" FROM "precompiled_cache_sub_lib" WHERE ("precompiled_cache_id"=?); [PersistInt64 7149]
2025-01-29 13:13:37.179487: [debug] (SQL) SELECT "id", "precompiled_cache_id", "exe" FROM "precompiled_cache_exe" WHERE ("precompiled_cache_id"=?); [PersistInt64 7149]
2025-01-29 13:13:37.182718: [info] ansi-terminal                    > using precompiled package

Stack version

stack --version
3.1.1 x86_64 hpack-0.37.0

Method of installation

NixOS package manager

Platform

NixOS 24.11.713790.2b4230bf03de (Vicuna)
@chreekat
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sloww.txt

@mpilgrem
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mpilgrem commented Feb 8, 2025

@chreekat, I don't know about speed, not least because Stack is likely doing things in different threads and that makes the interleaved debug output difficult to unpick, but I think Stack is behaving as expected, as follows:

  • by changing a (deemed) immutable extra-dep, you are specifying a new cache in the snapshot directory of the Stack root; and
  • Stack is working out what it can re-use from other existing caches and copying from those caches to the new cache. It announces it is doing that with using precompiled package.

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mpilgrem commented Feb 8, 2025

For example, building Stack itself, if I add acme-missles-0.3 as a (redundant) extra-dep, the build initially speeds though a number of using precompiled package until it hits open-browser-0.2.1.0 (which package, a direct dependency, for some reason, Stack decides it needs to build). While it is building that package in one thread, it continues to use some further using precompiled package (but a little slower than before). It then hits other packages Stack decides it needs to build: bitvec, indexed-traversable-instances, rio, serialise, text-metrics, th-lift-instances, hackage-security, semialign, witherable ... and things slow down.

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@chreekat @mpilgrem