Hello! One of the most common gotchas with new users is confusion with

python_library

, e.g. thinking it's more meaningful than it really is like that it corresponds to a Python distribution (setup.py). Proposal to fix this by renaming some targets https://docs.google.com/document/d/1afm8NhCuE19YyNZHJCrig9EnaV0eJrSsIVWXL7eDflA/edit#. tl;dr: -

python_library

->

python_sources

-

protobuf_library

->

protobuf_sources

-

python_requirement_library

->

python_requirement

Ack that this is disruptive; we'd provide a snippet to fix this automatically, like when we renamed

python_binary

->

pex_binary

. Feedback appreciated!