anchor.diff:              lens
           ];
   
  +    myHoogleLocal = spec: spec.hsPkgs.hoogleLocal.override {
  +        packages = myHaskellPackages spec;
  +    };
  +
  +    hoogleLocal_783 = myHoogleLocal ghcSpec_783;
  +
       };
   }
  
positive.code:         buildInputs = haskellTools spec ++ myHaskellPackages spec;
      };
  
      ghcEnv_g42 = ghcEnv {
          name = "ghc742";
          ghc = ghc.ghc742;
          hsPkgs = haskellPackages_ghc742;
  
negative.code: pkgs :
  {
    allowUnfree = true;
    allowBroken = true;
    packageOverrides = self: with self; rec {
  
      haskellTools = spec: ([
  