nixpkgs/pkgs/development/python-modules/numpy/default.nix

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{ lib
, fetchPypi
, python
, buildPythonPackage
, gfortran
, hypothesis
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, pytest_5
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, blas
, lapack
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, writeTextFile
, isPyPy
, cython
, setuptoolsBuildHook
, fetchpatch
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}:
assert (!blas.isILP64) && (!lapack.isILP64);
let
cfg = writeTextFile {
name = "site.cfg";
text = (lib.generators.toINI {} {
${blas.implementation} = {
include_dirs = "${lib.getDev blas}/include:${lib.getDev lapack}/include";
library_dirs = "${blas}/lib:${lapack}/lib";
runtime_library_dirs = "${blas}/lib:${lapack}/lib";
libraries = "lapack,lapacke,blas,cblas";
};
lapack = {
include_dirs = "${lib.getDev lapack}/include";
library_dirs = "${lapack}/lib";
runtime_library_dirs = "${lapack}/lib";
};
blas = {
include_dirs = "${lib.getDev blas}/include";
library_dirs = "${blas}/lib";
runtime_library_dirs = "${blas}/lib";
};
});
};
in buildPythonPackage rec {
pname = "numpy";
version = "1.19.4";
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format = "pyproject.toml";
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src = fetchPypi {
inherit pname version;
extension = "zip";
sha256 = "141ec3a3300ab89c7f2b0775289954d193cc8edb621ea05f99db9cb181530512";
};
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nativeBuildInputs = [ gfortran cython setuptoolsBuildHook ];
buildInputs = [ blas lapack ];
patches = [
# For compatibility with newer pytest
(fetchpatch {
url = "https://github.com/numpy/numpy/commit/ba315034759fbf91c61bb55390edc86e7b2627f3.patch";
sha256 = "F2P5q61CyhqsZfwkLmxb7A9YdE+43FXLbQkSjop2rVY=";
})
] ++ lib.optionals python.hasDistutilsCxxPatch [
# We patch cpython/distutils to fix https://bugs.python.org/issue1222585
# Patching of numpy.distutils is needed to prevent it from undoing the
# patch to distutils.
./numpy-distutils-C++.patch
];
# we default openblas to build with 64 threads
# if a machine has more than 64 threads, it will segfault
# see https://github.com/xianyi/OpenBLAS/issues/2993
preConfigure = ''
sed -i 's/-faltivec//' numpy/distutils/system_info.py
export NPY_NUM_BUILD_JOBS=$NIX_BUILD_CORES
export OMP_NUM_THREADS=$((NIX_BUILD_CORES > 64 ? 64 : NIX_BUILD_CORES))
'';
preBuild = ''
ln -s ${cfg} site.cfg
'';
enableParallelBuilding = true;
doCheck = !isPyPy; # numpy 1.16+ hits a bug in pypy's ctypes, using either numpy or pypy HEAD fixes this (https://github.com/numpy/numpy/issues/13807)
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checkInputs = [
pytest_5 # pytest 6 will error: "module is already imported: hypothesis"
hypothesis
];
checkPhase = ''
runHook preCheck
pushd dist
${python.interpreter} -c 'import numpy; numpy.test("fast", verbose=10)'
popd
runHook postCheck
'';
passthru = {
# just for backwards compatibility
blas = blas.provider;
blasImplementation = blas.implementation;
inherit cfg;
};
# Disable test
# - test_large_file_support: takes a long time and can cause the machine to run out of disk space
NOSE_EXCLUDE="test_large_file_support";
meta = {
description = "Scientific tools for Python";
homepage = "https://numpy.org/";
license = lib.licenses.bsd3;
maintainers = with lib.maintainers; [ fridh ];
};
}