Add support for paramspec

[Numerlor]

Adds support for ParamSpec, to keep compat I've decided to only check the name as typing_extensions is not a normal dep, and someone else using the name seems unlikely, though a check for some attribute could be added if necessary

[gaborbernat]

Please add test, changelog entry.

[gaborbernat]

Some of the checks still fail.

[Numerlor]

Not sure about the 3.7 check, as it's failing for me on main too, and type is something from stubs?

[gaborbernat]

Not sure about the 3.7 check, as it's failing for me on main too, and type is something from stubs?

Indeed something changed between https://github.com/tox-dev/sphinx-autodoc-typehints/actions/runs/3043415433 and https://github.com/tox-dev/sphinx-autodoc-typehints/actions/runs/3051184692.

The type check failure is because of because of github.com/python/mypy/pull/13500 (see related github.com/python/mypy/issues/13627); waiting for mypy 0.980 release to fix that. I don't have currently the bandwith to look into this, so if you want this to land soon would be much apprecated if you can look into it and put in a fix PR.

[Numerlor]

Okay, for 3.7, it looks like the type_comment extra is not getting installed and type comments are skipped because of that.
The trailing ``s used here

sphinx-autodoc-typehints/tox.ini

Line 25 in ccc75d2

type_comments

was dropped in ccc75d2, but after removing it in tox.ini, it still is unable to find it unless the underscore is removed or changed to -, not sure if that's a bug somewhere or the intended behaviour.

Should I just change it to -?

[gaborbernat]

Should I just change it to -?

Can give it a try to see if helps.