anchor.diff:            sha256 = "13i6lz99x0jb9fgns7brlqnv5s5w4clp26l8c3kxd318r1krvr6w";
           }) {};
   
  -        superconstraints =
  -          # Remove override when assertion fails
  -          assert (super.superconstraints or null) == null;
  -          self.callPackage (self.haskellSrc2nix {
  -            name = "superconstraints";
  -            src = fetchurl {
  -              url = "https://hackage.haskell.org/package/superconstraints-0.0.1/superconstraints.cabal";
  -              sha256 = "0bgc8ldml3533522gp1x2bjiazllknslpl2rvdkd1k1zfdbh3g9m";
  -            };
  -            sha256 = "1gx9p9i5jli91dnvvrc30j04h1v2m3d71i8sxli6qrhplq5y63dk";
  -          }) {};
  -      } // (if enableLibraryProfiling then {
  -        mkDerivation = expr: super.mkDerivation (expr // { enableLibraryProfiling = true; });
  -      } else {});
  +        mkDerivation = expr: super.mkDerivation (expr // {
  +          inherit enableLibraryProfiling;
  +        });
  +      };
       };
       haskellOverlays = import ./haskell-overlays {
         inherit
  
positive.code: , iosSdkVersion ? "10.2"
  }:
  let iosSupport = system != "x86_64-darwin";
      globalOverlay = self: super: {
        all-cabal-hashes = fetchurl {
          url = https://github.com/commercialhaskell/all-cabal-hashes/archive/c7af4479644dd1657df956dd7575b070c1e30d83.tar.gz;
          sha256 = "1aw6lcyjlfcpk74al489gds4vr4709d0rpchrr0lysrpk7mk2a7g";
        };
      };
      appleLibiconvHack = self: super: {
        darwin = super.darwin // {
          libiconv =
  
negative.code:         reflex-dom-core = addReflexOptimizerFlag (dontCheck (dontHaddock reflexDom.reflex-dom-core));
          reflex-todomvc = self.callPackage (hackGet ./reflex-todomvc) {};
          reflex-aeson-orphans = self.callPackage (hackGet ./reflex-aeson-orphans) {};
  
          inherit (jsaddlePkgs) jsaddle jsaddle-warp jsaddle-clib
                                jsaddle-webkit2gtk jsaddle-webkitgtk
                                jsaddle-wkwebview;
  
          jsaddle-dom = self.callPackage (hackGet ./jsaddle-dom) {};
  
          inherit (ghcjsDom) ghcjs-dom-jsffi;
  
          inherit (gargoylePkgs) gargoyle gargoyle-postgresql;
  
          language-nix = dontCheck super.language-nix;
  
          ########################################################################
          # Packages not in hackage
  