Install local python package in editable mode managed by poetry

poetry-editable.fish

function poetry-editable --description 'Do editable install for poetry project'
    echo "= RUN poetry build"
    poetry build
    set ver (poetry version -s)
    pushd dist/
    tar zxvf *-$ver.tar.gz
    popd
    mv setup.py setup.py.bak

    function on_premature_exit
        functions -e on_premature_exit
        echo "= RESTORE setup.py"
        mv setup.py.bak setup.py
    end

    echo "= PREPARE setup.py"
    ln -s dist/*-$ver/setup.py
    if test $status -ne 0
        on_premature_exit
        return 1
    end

    echo "= RUN pip install"
    python setup.py develop 2> /tmp/pip-editable
    if test $status -ne 0
        on_premature_exit
        echo "  FAILED. Check full log at /tmp/pip-editable"
        tail /tmp/pip-editable
        return 1
    end

    on_premature_exit
end