support wheel build tag regexes

[graingert]

eg:

hashin "numpy==1.11.0" --expression="cpy35.*-macosx.*x86_64"

will include

• numpy-1.11.0-cp35-cp35m-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl
• numpy-1.11.0.tar.gz

[peterbe]

What will that not include?

[graingert]

numpy-1.11.1-cp27-cp27mu-manylinux1_x86_64.whl
numpy-1.11.1.zip
Django-1.10rc1-py2.py3-none-any.whl

etc etc

[peterbe]

How about this for a crazy idea, instead of an advanced --build-tag regex looking thing, how about you run it like this:

$ hashin --interactive "numpy==1.11.0"
Keep "numpy-1.11.0.tar.gz"? [Y/n] y
Keep "numpy-1.11.1.zip"? [Y/n] n
Keep "numpy-1.11.1-cp27-cp27mu-manylinux1_x86_64.whl"? [Y/n] y

[peterbe]

What do you think @mythmon @ahal ?

[graingert]

I want it automatic though

[mythmon]

I'm not a fan of the manual version, because I want a deterministic process I can put in my docs. On the other hand, I also don't think I'll be using any filtering more complex than Python version (which hashin already supports).

@graingert can you share some more details about your use case for this feature?

[graingert]

@mythmon I want to be able to only install x86_64 manylinux1 builds.