anchor.diff:          });
           dependent-sum-template = doJailbreak super.dependent-sum-template;
   
  -	# Update for ghc 8.0.2
  +        # Update for ghc 8.0.2
           parallel = replaceSrc super.parallel (nixpkgs.fetchFromGitHub {
             owner = "haskell";
             repo = "parallel";
  
positive.code:         diagrams-contrib = doJailbreak super.diagrams-contrib;
          cases = doJailbreak super.cases; # The test suite's bounds on HTF are too strict
          async = doJailbreak super.async;
  
          vector-algorithms = overrideCabal super.vector-algorithms (drv: {
            libraryHaskellDepends = drv.libraryHaskellDepends ++ [ self.mtl self.mwc-random ];
  
negative.code:             rm Setup.lhs
            '';
          });
          semigroupoids = overrideCabal super.semigroupoids (drv: {
            doCheck = false;
            preCompileBuildDriver = ''
              rm Setup.lhs
            '';
          });
          # https://github.com/ygale/timezone-series/pull/1
          timezone-series = self.callPackage (cabal2nixResult sources.timezone-series) {};
  
  