mktempenv

mktempenv.sh

# Create a temporary pyenv virtualenv
mktempenv(){
    [[ $1 =~ ^(-h|--help)$ ]] && {
        echo "Usage: ${FUNCNAME[0]} [VERSION] [NAME]"
        echo 'Create a temporary pyenv virtualenv'
        return 0
    }

    local pyenv_version=${1:-$(pyenv version-name)}
    local venv_name=${2:-$(mktemp --dry-run -d "tmp-$pyenv_version-XXXXXX")}

    pyenv virtualenv "$pyenv_version" "$venv_name" || {
        echo 'ERROR: command exited unsuccessfully' >&2
        return 1
    }

    echo
    echo "Entering a new shell session with virtualenv '$venv_name' ($pyenv_version)."
    echo "It will be removed upon exit (ctrl+d or 'exit')."

    PYENV_VERSION=$venv_name "$SHELL"

    echo "Destroying temporary virtualenv '$venv_name'."
    pyenv uninstall -f "$venv_name"
}