anchor.diff:      doCheck         = false;
       ## Setup: Encountered missing dependencies:
       ## data-or ==1.0.*
  -    libraryHaskellDepends = drv.libraryHaskellDepends ++ [ self.data-or ];
  +    libraryHaskellDepends = drv.libraryHaskellDepends ++ (with self; [ data-or ]);
     });
   
     ## Unmerged.  PR: https://github.com/gtk2hs/gtk2hs/pull/233
  
positive.code: 
    ## Needs bump to a versioned attribute
    ## Issue: https://github.com/sol/doctest/issues/189
    doctest = dontCheck super.doctest_0_14_1; # test suite fails in Nix
  
    ## Needs bump to a versioned attribute
    ##     • Could not deduce (Semigroup (IterT m a))
  
negative.code:     ## base >=4.8 && <4.11
      jailbreak       = true;
    });
  
  }
  