nixpkgs/pkgs/development/interpreters/python/hooks/venv-shell-hook.sh
Frederik Rietdijk eba1f79418 pythonPackages.venvShellHook: init
This is a hook that loads a virtualenv from the specified `venvDir`
location. If the virtualenv does not exist, it is created.
2020-01-14 22:36:21 +01:00

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venvShellHook() {
echo "Executing venvHook"
runHook preShellHook
if [ -d "${venvDir}" ]; then
echo "Skipping venv creation, '${venvDir}' already exists"
else
echo "Creating new venv environment in path: '${venvDir}'"
@pythonInterpreter@ -m venv "${venvDir}"
fi
source "${venvDir}/bin/activate"
runHook postShellHook
echo "Finished executing venvShellHook"
}
if [ -z "${dontUseVenvShellHook:-}" ] && [ -z "${shellHook-}" ]; then
echo "Using venvShellHook"
if [ -z "${venvDir-}" ]; then
echo "Error: \`venvDir\` should be set when using \`venvShellHook\`."
exit 1
else
shellHook=venvShellHook
fi
fi