direnvrc

realpath() {
    [[ $1 = /* ]] && echo "$1" || echo "$PWD/${1#./}"
}
layout_python-venv() {
    local python=${1:-python3}
    [[ $# -gt 0 ]] && shift
    unset PYTHONHOME
    if [[ -n $VIRTUAL_ENV ]]; then
        VIRTUAL_ENV=$(realpath "${VIRTUAL_ENV}")
    else
        local python_version
        python_version=$("$python" -c "import platform; print(platform.python_version())")
        if [[ -z $python_version ]]; then
            log_error "Could not detect Python version"
            return 1
        fi
        VIRTUAL_ENV=$PWD/venv
    fi
    export VIRTUAL_ENV
    if [[ ! -d $VIRTUAL_ENV ]]; then
        log_status "no venv found; creating $VIRTUAL_ENV"
        "$python" -m venv "$VIRTUAL_ENV"
    fi
    PATH_add "$VIRTUAL_ENV/bin"
}