Pipfile support?

[alecbz]

Probably not an immediate priority, but it may be worth considering how/when to support the new 'Pipfile' format in addition to requirements.txt

[thedrow]

requirementslib can help us reuse the same code that imports requirements files since the library can convert Pipfile/Pipfile.lock files into requirements.txt files.

[thundergolfer]

Given the presence of Pipenv, Poetry, and pip-tools with their respective Pipfile[.lock], pyproject.toml, and requirements.in files, the Python packaging ecosystem is not close to having a useful consensus towards Pipenv on which we could justify adding Pipfile support.

I will close this issue for now.