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nixpkgs/pkgs/development/python-modules/h5py/default.nix

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Nix

{ stdenv, fetchPypi, isPy27, python, buildPythonPackage
, numpy, hdf5, cython, six, pkgconfig, unittest2
, mpi4py ? null, openssh }:
assert hdf5.mpiSupport -> mpi4py != null && hdf5.mpi == mpi4py.mpi;
with stdenv.lib;
let
mpi = hdf5.mpi;
mpiSupport = hdf5.mpiSupport;
in buildPythonPackage rec {
version = "2.8.0";
pname = "h5py";
src = fetchPypi {
inherit pname version;
sha256 = "0mdr6wrq02ac93m1aqx9kad0ppfzmm4imlxqgyy1x4l7hmdcc9p6";
};
configure_flags = "--hdf5=${hdf5}" + optionalString mpiSupport " --mpi";
postConfigure = ''
${python.executable} setup.py configure ${configure_flags}
# Needed to run the tests reliably. See:
# https://bitbucket.org/mpi4py/mpi4py/issues/87/multiple-test-errors-with-openmpi-30
${optionalString mpiSupport "export OMPI_MCA_rmaps_base_oversubscribe=yes"}
'';
preBuild = if mpiSupport then "export CC=${mpi}/bin/mpicc" else "";
checkInputs = optional isPy27 unittest2;
nativeBuildInputs = [ pkgconfig ];
buildInputs = [ hdf5 cython ]
++ optional mpiSupport mpi;
propagatedBuildInputs = [ numpy six]
++ optionals mpiSupport [ mpi4py openssh ];
meta = {
description =
"Pythonic interface to the HDF5 binary data format";
homepage = http://www.h5py.org/;
license = stdenv.lib.licenses.bsd2;
};
}