llvm> [100%] Running all regression tests
llvm> /nix/store/0l02qfg2zpr3ikcmr0jc2hzb80hy3bz8-python3-3.13.3-env/bin/python3.13 /build/llvm-src-14.0.6/llvm/build/./bin/llvm-lit --verbose -j40 --param polly_site_config=/build/llvm-src-14.0.6/llvm/build/tools/polly/test/lit.site.cfg --param polly_unit_site_config=/build/llvm-src-14.0.6/llvm/build/tools/polly/test/Unit/lit.site.cfg --param polly_site_config=/build/llvm-src-14.0.6/llvm/build/tools/polly/test/Unit/lit.site.cfg --param polly_site_config=/build/llvm-src-14.0.6/llvm/build/tools/polly/test/UnitIsl/lit.site.cfg /build/llvm-src-14.0.6/llvm/build/tools/polly/test /build/llvm-src-14.0.6/llvm/build/tools/polly/test/Unit /build/llvm-src-14.0.6/llvm/build/tools/polly/test/UnitIsl /build/llvm-src-14.0.6/llvm/build/utils/lit /build/llvm-src-14.0.6/llvm/build/test
llvm> /build/llvm-src-14.0.6/llvm/utils/lit/lit/formats/googletest.py:57: SyntaxWarning: invalid escape sequence '\('
llvm>   upstream_prefix = re.compile('Running main\(\) from .*gtest_main\.cc')
llvm> /build/llvm-src-14.0.6/llvm/utils/lit/lit/TestRunner.py:199: SyntaxWarning: invalid escape sequence '\c'
llvm>   (e.g. "a\b\\c\\\\d" becomes "a\b\c\\d" where it should stay as it was,
llvm> llvm-lit: /build/llvm-src-14.0.6/llvm/utils/lit/lit/TestingConfig.py:103: fatal: unable to parse config file '/build/llvm-src-14.0.6/llvm/test/Bindings/Go/lit.local.cfg', traceback: Traceback (most recent call last):
llvm>   File "/build/llvm-src-14.0.6/llvm/utils/lit/lit/TestingConfig.py", line 92, in load_from_path
llvm>     exec(compile(data, path, 'exec'), cfg_globals, None)
llvm>     ~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
llvm>   File "/build/llvm-src-14.0.6/llvm/test/Bindings/Go/lit.local.cfg", line 2, in <module>
llvm>     import pipes
llvm> ModuleNotFoundError: No module named 'pipes'
llvm> 
llvm> make[3]: *** [CMakeFiles/check-all.dir/build.make:71: CMakeFiles/check-all] Error 2
llvm> make[3]: Leaving directory '/build/llvm-src-14.0.6/llvm/build'
llvm> make[2]: *** [CMakeFiles/Makefile2:11239: CMakeFiles/check-all.dir/all] Error 2
llvm> make[2]: Leaving directory '/build/llvm-src-14.0.6/llvm/build'
llvm> make[1]: *** [CMakeFiles/Makefile2:11246: CMakeFiles/check-all.dir/rule] Error 2
llvm> make[1]: Leaving directory '/build/llvm-src-14.0.6/llvm/build'
llvm> make: *** [Makefile:228: check-all] Error 2

In reply to @hexa:lossy.network
LLVM15 is still required for llvmlite/numba

https://github.com/NixOS/nixpkgs/pull/403201 https://github.com/NixOS/nixpkgs/pull/403549 https://github.com/NixOS/nixpkgs/pull/403960

Anyone wants to take the chance to merge these three PRs

In reply to @aleksana:mozilla.org
We have been running on these three PRs for quite a long time

In reply to @rosscomputerguy:matrix.org
Ping me in like 8 hours and I'll look at it lol

In reply to @aleksana:mozilla.org
😼

I tried the following patch, but it was insufficient

diff --git a/pkgs/development/compilers/llvm/default.nix b/pkgs/development/compilers/llvm/default.nix
index 8800a6408c01..7ad373016b78 100644
--- a/pkgs/development/compilers/llvm/default.nix
+++ b/pkgs/development/compilers/llvm/default.nix
@@ -85,6 +85,12 @@ let
                 gcc12Stdenv
               else
                 stdenv; # does not build with gcc13
+            python3 =
+              if (lib.versionOlder release_version "16") then
+                # https://docs.python.org/3/library/pipes.html
+                pkgs.python312
+              else
+                pkgs.python3;
           }
         )
       )

llvm> Running phase: checkPhase
llvm> check flags: -j40 check-all
llvm> [1/2] Preparing lit tests
llvm> [1/2] Running all regression tests
llvm> /build/llvm-src-15.0.7/llvm/utils/lit/lit/TestRunner.py:211: SyntaxWarning: invalid escape sequence '\c'
llvm>   (e.g. "a\b\\c\\\\d" becomes "a\b\c\\d" where it should stay as it was,
llvm> /build/llvm-src-15.0.7/llvm/utils/lit/lit/TestRunner.py:1272: SyntaxWarning: invalid escape sequence '\s'
llvm>   match = _caching_re_compile('^\s*%else\s*(%{)?').search(ln)
llvm> /build/llvm-src-15.0.7/llvm/test/lit.cfg.py:221: SyntaxWarning: invalid escape sequence '\d'
llvm>   match = re.search('release (\d+)\.(\d+)', ptxas_out)
llvm> llvm-lit: /build/llvm-src-15.0.7/llvm/utils/lit/lit/TestingConfig.py:136: fatal: unable to parse config file '/build/llvm-src-15.0.7/llvm/test/Bindings/Go/lit.local.cfg', traceback: Traceback (most recent call last):
llvm>   File "/build/llvm-src-15.0.7/llvm/utils/lit/lit/TestingConfig.py", line 125, in load_from_path
llvm>     exec(compile(data, path, 'exec'), cfg_globals, None)
llvm>     ~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
llvm>   File "/build/llvm-src-15.0.7/llvm/test/Bindings/Go/lit.local.cfg", line 2, in <module>
llvm>     import pipes
llvm> ModuleNotFoundError: No module named 'pipes'
llvm> 
llvm> FAILED: CMakeFiles/check-all /build/llvm-src-15.0.7/llvm/build/CMakeFiles/check-all 
llvm> cd /build/llvm-src-15.0.7/llvm/build && /nix/store/f1x7fb6jwm9phhcrldsc6xj5wmazvhvs-python3-3.13.3-env/bin/python3.13 /build/llvm-src-15.0.7/llvm/build/./bin/llvm-lit --verbose -j40 --param polly_site_config=/build/llvm-src-15.0.7/llvm/build/tools/polly/test/lit.site.cfg --param polly_unit_site_config=/build/llvm-src-15.0.7/llvm/build/tools/polly/test/Unit/lit.site.cfg /build/llvm-src-15.0.7/llvm/build/tools/polly/test /build/llvm-src-15.0.7/llvm/build/utils/lit /build/llvm-src-15.0.7/llvm/build/test
llvm> ninja: build stopped: subcommand failed.