1 files changed, 115 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/python-modules/numpy/default.nix b/nixpkgs/pkgs/development/python-modules/numpy/default.nix
new file mode 100644
index 000000000000..68add2cdc26c
--- /dev/null
+++ b/nixpkgs/pkgs/development/python-modules/numpy/default.nix
@@ -0,0 +1,115 @@
+{ lib
+, fetchPypi
+, fetchpatch
+, python
+, buildPythonPackage
+, gfortran
+, hypothesis
+, pytest
+, typing-extensions
+, blas
+, lapack
+, writeTextFile
+, cython
+, setuptoolsBuildHook
+, pythonOlder
+}:
+
+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 = "${blas}/lib";
+      };
+    });
+  };
+in buildPythonPackage rec {
+  pname = "numpy";
+
+  # Attention! v1.22.0 breaks scipy and by extension scikit-learn, so
+  # build both to verify they don't break.
+  # https://github.com/scipy/scipy/issues/15414
+  version = "1.23.1";
+
+  format = "pyproject.toml";
+  disabled = pythonOlder "3.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    extension = "tar.gz";
+    hash = "sha256-10jvNJv+8uEZS1naN+1aKcGeqNfmNCAZkhuiuk/YtiQ=";
+  };
+
+  patches = lib.optionals python.hasDistutilsCxxPatch [
+    # We patch cpython/distutils to fix https://bugs.python.org/issue1222585
+    # Patching of numpy.distutils is needed to prevent it from undoing the
+    # patch to distutils.
+    ./numpy-distutils-C++.patch
+  ];
+
+  nativeBuildInputs = [ gfortran cython setuptoolsBuildHook ];
+  buildInputs = [ blas lapack ];
+
+  # we default openblas to build with 64 threads
+  # if a machine has more than 64 threads, it will segfault
+  # see https://github.com/xianyi/OpenBLAS/issues/2993
+  preConfigure = ''
+    sed -i 's/-faltivec//' numpy/distutils/system_info.py
+    export NPY_NUM_BUILD_JOBS=$NIX_BUILD_CORES
+    export OMP_NUM_THREADS=$((NIX_BUILD_CORES > 64 ? 64 : NIX_BUILD_CORES))
+  '';
+
+  preBuild = ''
+    ln -s ${cfg} site.cfg
+  '';
+
+  enableParallelBuilding = true;
+
+  checkInputs = [
+    pytest
+    hypothesis
+    typing-extensions
+  ];
+
+  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 ];
+  };
+}