This is kind of cursed, but... the whole point of making FHDLTestCase internal is that we can do whatever cursed stuff we want. So I'm fine with it.

trying to get the last stack frame that is still inside the nmigen codebase when creating names for the spec file

Wait, how does this actually work?

Codecov Report

Merging #511 into master will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #511   +/-   ##
=======================================
  Coverage   81.33%   81.34%           
=======================================
  Files          49       49           
  Lines        6409     6412    +3     
  Branches     1278     1279    +1     
=======================================
+ Hits         5213     5216    +3     
  Misses       1007     1007           
  Partials      189      189           

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Ah okay, I see how it works. I think you shouldn't match nmigen in the path because there's no guarantee or requirement for the git checkout name; in particular I think CI often check out the project as something like ~/work (Appveyor does it iirc?). Maybe match against dirname of utils.py?

Ah you are right, I missed that. Sounds good; will do :)

Thanks!