nixpkgs/pkgs/development/interpreters/python/wrapper.nix
Frederik Rietdijk 12e8f3c6aa python: apply wrapper to all packages in python.buildEnv extraLibs
Currently, when constructing a buildEnv and adding packages via
extraLibs, then binaries in extraLibs cannot access the other Python
modules. An example is having ipython/jupyter in extraLibs; in that case
ipython cannot import any other modules.
2015-11-30 10:52:57 +01:00

55 lines
1.5 KiB
Nix

{ stdenv, python, buildEnv, makeWrapper
, extraLibs ? []
, postBuild ? ""
, ignoreCollisions ? false }:
# Create a python executable that knows about additional packages.
let
recursivePthLoader = import ../../python-modules/recursive-pth-loader/default.nix { stdenv = stdenv; python = python; };
env = (
let
paths = stdenv.lib.filter (x : x ? pythonPath) (stdenv.lib.closePropagation extraLibs) ++ [ python recursivePthLoader ];
in buildEnv {
name = "${python.name}-env";
inherit paths;
inherit ignoreCollisions;
postBuild = ''
. "${makeWrapper}/nix-support/setup-hook"
if [ -L "$out/bin" ]; then
unlink "$out/bin"
fi
mkdir -p "$out/bin"
for path in ${stdenv.lib.concatStringsSep " " paths}; do
if [ -d "$path/bin" ]; then
cd "$path/bin"
for prg in *; do
if [ -f "$prg" ]; then
rm -f "$out/bin/$prg"
makeWrapper "$path/bin/$prg" "$out/bin/$prg" --set PYTHONHOME "$out"
fi
done
fi
done
'' + postBuild;
passthru.env = stdenv.mkDerivation {
name = "interactive-${python.name}-environment";
nativeBuildInputs = [ env ];
buildCommand = ''
echo >&2 ""
echo >&2 "*** Python 'env' attributes are intended for interactive nix-shell sessions, not for building! ***"
echo >&2 ""
exit 1
'';
};
}) // {
inherit python;
inherit (python) meta;
};
in env