anchor.diff:    # Compiles some C++ source which requires these headers
     VulkanMemoryAllocator = addExtraLibrary super.VulkanMemoryAllocator pkgs.vulkan-headers;
   
  -  # # Builds only with the latest version of indexed-list-literals.
  -  # vector-sized_1_0_3_0 = super.vector-sized_1_0_3_0.override {
  -  #   indexed-list-literals = self.indexed-list-literals_0_2_1_1;
  -  # };
  -
     # https://github.com/dmwit/encoding/pull/3
     encoding = doJailbreak (appendPatch super.encoding ./patches/encoding-Cabal-2.0.patch);
   
  
positive.code:     in doJailbreak (f super.servant-docs); # jailbreak tasty < 1.2 until servant-docs > 0.11.3 is on hackage.
    swagger2 = if (pkgs.stdenv.hostPlatform.isAarch32 || pkgs.stdenv.hostPlatform.isAarch64) then dontHaddock (dontCheck super.swagger2) else super.swagger2;
  
    # requires a release including https://github.com/haskell-servant/servant-swagger/commit/249530d9f85fe76dfb18b100542f75a27e6a3079
    servant-swagger = dontCheck super.servant-swagger;
  
    # Tries to read a file it is not allowed to in the test suite
    load-env = dontCheck super.load-env;
  
    # Copy hledger man pages from data directory into the proper place. This code
    # should be moved into the cabal2nix generator.
    hledger = overrideCabal super.hledger (drv: {
  
negative.code: 
    # Test suite won't link for no apparent reason.
    constraints-deriving = dontCheck super.constraints-deriving;
  
    # https://github.com/elliottt/hsopenid/issues/15
    openid = markBroken super.openid;
  