CI: Pin setuptools for python dev
Lets see if this works

- [x] xref #44980 
should this

https://github.com/pandas-dev/pandas/blob/d228a781b4d7be6c753cee940ce3ee692e97697d/ci/setup_env.sh#L109

also be pinned? Yep, thx Could you leave a `TODO` comment nearby the change referencing https://github.com/pypa/setuptools/issues/2941? Done merge when ready uhh the ArrayManager tests have been going for 4 hours and counting > uhh the ArrayManager tests have been going for 4 hours and counting

hmm 3hrs on second attempt.. 

Should be allow >=60.0.3 given this release fixes the issue? I think we should be able to avoid pinning this, if the newest version works? yes, agreed Looks like it does not adress all problems, https://github.com/pandas-dev/pandas/runs/4594019360?check_suite_focus=true

Edit: Can reproduce locally The experimental data manager issue seems unrelated. I can also see this at https://github.com/pandas-dev/pandas/runs/4594019873?check_suite_focus=true. This has the newest setuptools experimental data manager failure is unrelated, see #44994 other than ArrayManager is this ready? Yes > Yes

ok and the AM tests broke on the json changes? actually can we just unpin this? e.g. if >=60.0.3 its working? 60.0.3 does not work unfortunately. There are still problems. Posted some more info on the issue. Yes AM case was from the json change cool thanks @phofl 

ok if you don't mind disabling the failing tests in AM build for the json (and create an issue about it) to get the CI back to green :-> #44999