pip requirements For Aliens

It's not for human.

Write these sections in setup.cfg:

[piplock:common]
reqs = sqlalchemy

[piplock:dev]
reqs =
    testfixtures
    factory-boy

[piplock:prod]
reqs = psycopg2

Install packages:

piplock install (--dev/--prod)

Generating requirements.txt to your project root:

piplock lock (--dev/--prod)