Normalize local requirements when creating a wheel or sdist

[idlsoft]

When building a wheel or a source distribution local source dependencies like my_lib @ ../my_lib will be converted to regular dependencies like my_lib == 1.0.0.

This would make it easier to release multiple inter-dependent libraries

[ofek]

?

[idlsoft]

?

I don't think it's fully cooked yet.

It handles a very specific criteria to post-process dependencies.

There's work being done to have a proper cargo-like workspace for python. In that context the criteria of what a local dependency is would be very different.

It may be more useful to open this up to hooks and leave the function as one of the possible implementations.

[ofek]

FYI Hatch intends to provide such an experience for Python (the idea and project predates UV). I think you are right that this PR would have been insufficient and actually I'm working on the workspaces feature today, as we speak!

[idlsoft]

I'm working on the workspaces feature today, as we speak!

That's great, can't believe this is still uncommon.
I tidied it up a bit, for some reason it wouldn't allow me to re-open this PR.