Inspired by https://github.com/fschulze/devpi-buildout
$ bin/supervisord
$ bin/devpi use http://localhost:3141/
$ bin/devpi login root --password=
$ bin/devpi user -c foo password=bar
$ bin/devpi login foo --password=bar
$ bin/devpi index -c prod
$ bin/devpi index -c test bases=foo/prod