anchor.diff:    quickcheck-instances = doJailbreak super.quickcheck-instances;
     setlocale = doJailbreak super.setlocale;
     split = doJailbreak super.split;
  +  system-fileio = doJailbreak super.system-fileio;
     tasty-expected-failure = doJailbreak super.tasty-expected-failure;
  +  tasty-hedgehog = doJailbreak super.tasty-hedgehog;
     test-framework = doJailbreak super.test-framework;
  +  th-expand-syns = doJailbreak super.th-expand-syns;
   
     # These packages don't work and need patching and/or an update.
     primitive = overrideSrc (doJailbreak super.primitive) {
  
positive.code:   string-qq = self.string-qq_0_0_4;
    tls = self.tls_1_5_1;
    xmonad-contrib = self.xmonad-contrib_0_16;
  
  }
  
negative.code:     sha256 = "0zsgzn0nvdxvqi5z0za3gzlhql2x5d5cr0kkr19j5c67fy177w6b";
    });
  
    # https://github.com/sol/hpack/issues/371
    hpack = appendPatch super.hpack (pkgs.fetchpatch {
      url = "https://gitlab.haskell.org/ghc/head.hackage/raw/master/patches/hpack-0.32.0.patch";
  