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: 
    # upstream issue: https://github.com/vmchale/atspkg/issues/12
    language-ats = dontCheck super.language-ats;
  
    # https://github.com/Happstack/web-routes-th/pull/3
    web-routes-th = doJailbreak super.web-routes-th;
  
    # Remove for hail > 0.2.0.0
    hail = overrideCabal super.hail (drv: {
  
negative.code: 
    # https://github.com/haskell-servant/servant-auth/issues/113
    servant-auth-client = dontCheck super.servant-auth-client;
  
    # 2020-06-04: HACK: dontCheck - The test suite attempts to use the network.
    # Should be solved when: https://github.com/dhall-lang/dhall-haskell/issues/1837
  