19.1 circular dependencies

[scarabeusiv]

With the 19.1 release the package now depends on attrs, which in turn depends directly on setuptools. Packaging on its own is a direct dependency of setuptools as well. This means when you are bootstraping the packages it can't be done properly.

Looking at attrs they rely on find_packages and few other tiny features of setuptools 40+ so I don't think it is possible to build them just with distutils...
https://github.com/python-attrs/attrs/blob/master/setup.py

Could maybe tags became optional feature? That would be good enough for us to not hard-require it...

[pradyunsg]

We can probably drop attrs and change the class in question to a handwritten implementation with slots, if nothing else.

[183amir]

Is there going to be a release with this fix soon?

[pradyunsg]

There's some discussion on #179.