There's a haskell package whose test suite only fails on i686 (microlens-aeson). The upstream fix is simple. Should I:
   a). just submit a patch upstream and do a local override to disable test suite for now
   b). submit a patch to nixpkgs to disable test only on i686 in the meantime as in https://www.youtube.com/watch?v=KLhkAEk8I20
?