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python3Packages.numpy: make numpy.pc more visible

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This change also enables scipy to find numpy via pkg-config, and not
only via `scipy.passthru.buildConfig.properties.numpy-include-dir`, and
thus enables free threading via f2py. See:

7fd20c742b (diff-b39b7bda5a)

Arguably, this makes the `numpy.passthru.coreIncludeDir` definition
redundant, but we will keep it for backwards compatibility.
This commit is contained in:
Doron Behar 2026-06-22 14:47:48 +03:00
commit 95d2a3227b
1 changed files with 13 additions and 1 deletions
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14
pkgs/development/python-modules/numpy/2.nix
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@ -113,6 +113,14 @@ buildPythonPackage (finalAttrs: {
typing-extensions
];
# Enables any dependent package to easily find numpy.pc via standard
# pkg-config call. The `$out/include` symlink matches what's written in the
# numpy.pc file.
postInstall = ''
ln -s $out/${python.sitePackages}/numpy/_core/lib/pkgconfig $out/lib/pkgconfig
ln -s ${placeholder "out"}/${finalAttrs.passthru.coreIncludeInnerDir} $out/include
'';
preCheck = ''
pushd $out
# For numpy-config executable to be available during tests
@ -192,7 +200,11 @@ buildPythonPackage (finalAttrs: {
name = "site.cfg";
text = lib.generators.toINI { } finalAttrs.finalPackage.buildConfig;
};
coreIncludeDir = "${finalAttrs.finalPackage}/${python.sitePackages}/numpy/_core/include";
# Need to be defined with two variables for postInstall to use `placeholder
# "out"` where here we have to use `${finalAttrs.finalPackage}`, that would
# cause infinite recursion if used in postInstall too.
coreIncludeInnerDir = "${python.sitePackages}/numpy/_core/include";
coreIncludeDir = "${finalAttrs.finalPackage}/${finalAttrs.finalPackage.passthru.coreIncludeInnerDir}";
tests = {
inherit sage;
};