Set compile invalidation method

[Siecje]

What's the problem this feature will solve?

I'm trying to have pip create "hash-based"[0] .pyc files when you install a distribution package.

0: https://docs.python.org/3.7/reference/import.html#cached-bytecode-invalidation

Describe the solution you'd like

pip could accept a --invalidation-mode argument which matches the same argument for python -m compileall[1] and sets the cache method.

1: https://docs.python.org/3.7/library/compileall.html#cmdoption-compileall-invalidation-mode

Currently I am installing distribution packages with pip and then setting the timestamp in the .pyc file to a known value. This does not use the new "hash-based" cache files.

Alternative Solutions

I could re-compile the Python files with the preferred mode.

Additional context

https://www.python.org/dev/peps/pep-0552/

[Siecje]

--compile could also accept options

[pradyunsg]

Closing as a duplicate of #5648 since that has a better description. :)

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.