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

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{ lib
, buildPythonPackage
, pkgs
, numpy
, scipy
, mpi
, enum34
, protobuf
, pip
, python
, swig
}:
let
cntk = pkgs.cntk;
in
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buildPythonPackage {
inherit (cntk) name version src;
nativeBuildInputs = [ swig mpi ];
buildInputs = [ cntk mpi ];
propagatedBuildInputs = [ numpy scipy enum34 protobuf pip ];
CNTK_LIB_PATH = "${cntk}/lib";
CNTK_COMPONENT_VERSION = cntk.version;
CNTK_VERSION = cntk.version;
CNTK_VERSION_BANNER = cntk.version;
postPatch = ''
cd bindings/python
sed -i 's,"libmpi.so.12","${mpi}/lib/libmpi.so",g' cntk/train/distributed.py
# Remove distro and libs checks; they aren't compatible with NixOS and besides we guarantee
# compatibility by providing a package.
cat <<EOF > cntk/cntk_py_init.py
def cntk_check_distro_info():
pass
def cntk_check_libs():
pass
EOF
'';
postInstall = ''
rm -rf $out/${python.sitePackages}/cntk/libs
ln -s ${cntk}/lib $out/${python.sitePackages}/cntk/libs
# It's not installed for some reason.
cp cntk/cntk_py.py $out/${python.sitePackages}/cntk
'';
# Actual tests are broken.
checkPhase = ''
cd $NIX_BUILD_TOP
${python.interpreter} -c "import cntk"
'';
meta = {
inherit (cntk.meta) homepage description license maintainers platforms;
# doesn't support Python 3.7
broken = lib.versionAtLeast python.version "3.7";
};
}