reproduce pipenv:#4235

reproduce.sh

#!/bin/bash -x

mkpkg() {
    name=$1
    shift
    deps="$*"
    mkdir -p $name/$name
    touch $name/$name/__init__.py
    cat > $name/setup.py <<EOF
from setuptools import setup
setup()
EOF
    cat > $name/setup.cfg <<EOF
[metadata]
name = $name
version = 1.0

[options]
packages = find:
install_requires = $deps
EOF
}

/bin/rm -rf env foo_app foo_lib
mkpkg foo_app foo_lib
mkpkg foo_lib

python3 -m venv env
env/bin/pip install pipenv>2018.11.26

cd foo_app
export PIPENV_VENV_IN_PROJECT=1
../env/bin/pipenv install -e ../foo_lib -e .

moriyoshiの嘆き
https://twitter.com/moriyoshit/status/1001030876308824064

とりあえず相対パスでも通るようだ。25行目を
mkpkg foo_app foo_lib @ file://localhost/../foo_lib
にしたらOKだった。