Highlights

The main features of this release are:

We had loftier goals feature-wise, but didn't want to block others embracing Python 3.11.

None of my projects would exist in their current form without you!

Full Changelog

Python 2.7 is not supported anymore.
Dealing with Python 2.7 tooling has become too difficult for a volunteer-run project.
We have supported Python 2 more than 2 years after it was officially discontinued and feel that we have paid our dues. All version up to 21.4.0 from December 2021 remain fully functional, of course. #936
The deprecated cmp attribute of attrs.Attribute has been removed. This does not affect the cmp argument to attr.s that can be used as a shortcut to set eq and order at the same time. #939

Instantiation of frozen slotted classes is now faster. #898
If an eq key is defined, it is also used before hashing the attribute. #909
Added attrs.validators.min_len(). #916
attrs.validators.deep_iterable()'s member_validator argument now also accepts a list of validators and wraps them in an attrs.validators.and_(). #925
Added missing type stub re-imports for attrs.converters and attrs.filters. #931
Added missing stub for attr(s).cmp_using(). #949
attrs.validators._in()'s ValueError is not missing the attribute, expected options, and the value it got anymore. #951
Python 3.11 is now officially supported. #969