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{ stdenv, python, buildEnv, makeWrapper
, extraLibs ? []
, extraOutputsToInstall ? []
, postBuild ? ""
, ignoreCollisions ? false
, permitUserSite ? false
, requiredPythonModules
# Wrap executables with the given argument.
, makeWrapperArgs ? []
, }:
# Create a python executable that knows about additional packages.
let
env = let
paths = requiredPythonModules (extraLibs ++ [ python ] ) ;
pythonPath = "${placeholder "out"}/${python.sitePackages}";
pythonExecutable = "${placeholder "out"}/bin/${python.executable}";
in buildEnv {
name = "${python.name}-env";
inherit paths;
inherit ignoreCollisions;
extraOutputsToInstall = [ "out" ] ++ extraOutputsToInstall;
postBuild = ''
. "${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"
if [ -x "$prg" ]; then
makeWrapper "$path/bin/$prg" "$out/bin/$prg" --set NIX_PYTHONEXECUTABLE ${pythonExecutable} --set NIX_PYTHONPATH ${pythonPath} ${if permitUserSite then "" else ''--set PYTHONNOUSERSITE "true"''} ${stdenv.lib.concatStringsSep " " makeWrapperArgs}
fi
fi
done
fi
done
'' + postBuild;
inherit (python) meta;
passthru = python.passthru // {
interpreter = "${env}/bin/${python.executable}";
inherit python;
env = stdenv.mkDerivation {
name = "interactive-${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
'';
};
};
};
in env
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