Start running tests on 3.12

[MatthieuDartiailh]

No description provided.

[codecov]

Codecov Report

Merging #200 (dc1cc41) into main (761a528) will increase coverage by 7.61%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #200      +/-   ##
==========================================
+ Coverage   89.22%   96.84%   +7.61%     
==========================================
  Files          60       24      -36     
  Lines        5580     1109    -4471     
  Branches      359      195     -164     
==========================================
- Hits         4979     1074    -3905     
+ Misses        582       16     -566     
  Partials       19       19              

[MatthieuDartiailh]

After investigating locally it appears that the segfault on exit are linked to cleaning up C++ namespaces containing Python object late in the interpreter shutdown process. The proper workaround is likely to store such variables in a module state (as should be done for a bunch of other global variables).

This may require to drop 3.8 and to do some funny dance on 3.9 and 3.10 since we cannot get a module state in a slot in those versions.

[MatthieuDartiailh]

I found a workaround for the segfault but we should move to using module states still.