Implement build string version comparison

[baszalmstra]

Our matchspec implementation currently doesn't implement build string version comparison like >6 in python 3.9.3[build_number=">6"].

This would be a nice addition!

Conda implementation: https://github.com/conda/conda/blob/main/conda/models/version.py#L613

[YeungOnion]

Is this still needed? I'd like to take a look.

Additionally, the link is to main branch instead of commit hash, so to make sure, are you referring to the method below?

BuildNumberMatch.get_matcher

Anything else to know?

[baszalmstra]

Yes this is still needed! :)

Indeed, the link should point to the BuildNumberMatch class.

[YeungOnion]

Thoughts on new dependency for more general version matching? Seems well established and has no depends. Might mess around with it for fun.

[baszalmstra]

Conda version parsing and ordering is very specific. I doubt the approach used by that crate will provide the correct result.

[baszalmstra]

Implemented in #346