fix(pypi): handle multiple versions of the same package when parsing requirements files

[ewianda]

This change makes it possible to handle local versions of packages,
which is extremely useful with PyTorch. With this change, it is
possible to have different local versions of the same package in the
requirements.txt file translated to valid whl_library repositories.

Fixes #2337

[aignas]

Thanks for the contribution!

Does this fix the #2337 issue? Looking at the fix here this may be the case, but I am not sure.

[ewianda]

Thanks for the contribution!

Does this fix the #2337 issue? Looking at the fix here this may be the case, but I am not sure.

Yes that is correct

[aignas]

I have reworded the commit message a little bit and changed the title since this is more like a fix to an existing feature rather than a new featuer.

LGTM in general, could you please add a CHANGELOG.md note as well that this PR fixes an open issue? Something like:

• (pypi): Correctly handle multiple versions of the same package in the requirements files which is useful when including different PyTorch builds (e.g. <pytorch+cpu> vs ) for different target platforms. Fixes #2337.

[aignas]

Ah, could you please move the changelog entry to the unreleased block? It might have messed up during a merge/rebase.