PyYAML and wheel

[4383]

According to this code I suppose that pyyaml can be build without wheel.

I suppose we can facing this case when users install pyyaml from source, so, why do not include requirements that we install before build this package to standardize building process and to simplify setup?

If you agree I can make the necessary changes and propose a pull request to pyyaml.

[MRigal]

That would be great! It's also slightly related to #281

[webknjaz]

Unfortunately, it's up to @ingydotnet to accept such a contribution. If you want to send a PR, you'll need to build matrixes of (1) manylinux1 wheels, macOS wheels, and Windows wheels.

[GliderGeek]

a wheel version would be highly appreciated 👍

[nitzmahone]

addressed in #407 in 5.4b1

[GliderGeek]

thanks for fixing this 👍