nixpkgs/pkgs/development/interpreters/python/wrapper.nix

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{ 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 = (buildEnv {
name = "${python.name}-env";
paths = stdenv.lib.filter (x : x ? pythonPath) (stdenv.lib.closePropagation extraLibs) ++ [ python recursivePthLoader ];
inherit ignoreCollisions;
postBuild = ''
. "${makeWrapper}/nix-support/setup-hook"
if [ -L "$out/bin" ]; then
unlink "$out/bin"
fi
mkdir -p "$out/bin"
cd "${python}/bin"
for prg in *; do
rm -f "$out/bin/$prg"
makeWrapper "${python}/bin/$prg" "$out/bin/$prg" --set PYTHONHOME "$out"
done
'' + postBuild;
passthru.env = stdenv.mkDerivation {
name = "interactive-${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