Use platform.uname instead of os.uname

[Tontyna]

platform.uname() should work on all platforms (cf. #1023 (comment)) and therefore weasyprint --info, too.

Decided to import platform locally to avoid unnecessary initialization when there is no --info argument.

It's just educated guessing that it reveals interesting facts on Windows -- I don't have no Windows computer anymore.

Have no idea how to write a unit test for PrintInfo action 😳

[liZe]

Hello!

I had actually changed this in the clean branch too, in 10a7863. I really should have merged it sooner… And there’s also a test in this commit, at least checking that it doesn’t crash as it used to do on Windows 😄.

[Tontyna]

Ah so simple, just _run('--info')

[liZe]

I’ve merged the clean branch.

It's just educated guessing that it reveals interesting facts on Windows -- I don't have no Windows computer anymore.

Oo

[Tontyna]

Oo

I know, Linux sucks, but Windows is an abomination.

[liZe]

I know, Linux sucks, but Windows is an abomination.

That was interesting reading!