Use auditwheel show to detect platform wheels

[lkollar]

To avoid masking errors when skipping non-platform wheels, use
auditwheel show first to detect platform wheels.

[marcelm]

I think the actual problem is that pip wheel also creates wheels for dependencies, not only for the target. The problem then arises when auditwheel repair tries to repair a dependency.

As I mentioned in #7 (comment), that could be solved by just running pip wheel with --no-deps. I’ve done this in my own repos and it has been working well.

[marcelm]

Either way, #17 can then also be closed.

[lkollar]

@marcelm I agree that --no-deps should be added but I think these are both useful as skipping non-platform wheels makes it easy to use this script on pure-Python projects as well. I will submit another PR to add --no-deps as well.

[marcelm]

Ok, I think I just wouldn’t have expected this script to be used in pure Python projects where a regular pip wheel would be sufficient.