address removal of attrs.validators.provides

[glyph]

fixes #763

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.08%. Comparing base (1fa3d70) to head (b4b3424).
Report is 24 commits behind head on trunk.

Additional details and impacted files

@@           Coverage Diff           @@
##            trunk     #764   +/-   ##
=======================================
  Coverage   99.07%   99.08%           
=======================================
  Files          46       48    +2     
  Lines        4002     4040   +38     
  Branches      540      544    +4     
=======================================
+ Hits         3965     4003   +38     
  Misses         23       23           
  Partials       14       14           

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[glyph]

@adiroiban @mgorny I think this is good to go, just needs a review.

We should probably do a fast-following release.

[twm]

Looks good to me! Thanks @glyph. I'll go ahead and merge this as it also seems to green up the build.

[mgorny]

Thanks! The patch also seems to green it for me.