anchor.diff:    yesod-core = dontCheck super.yesod-core;
   
     # Add ApplicationServices on darwin
  -  # use 0.4.5 instead of 0.4.4 to fix build with glibc >= 2.32
  -  apecs-physics = addPkgconfigDepends super.apecs-physics_0_4_5
  +  apecs-physics = addPkgconfigDepends super.apecs-physics
       (pkgs.lib.optional pkgs.stdenv.isDarwin pkgs.darwin.apple_sdk.frameworks.ApplicationServices);
   
   } // import ./configuration-tensorflow.nix {inherit pkgs haskellLib;} self super
  
positive.code:   # building of the executable has been disabled for ghc < 8.10 in hnix.
    # Generating the completions should be activated again, once we default to
    # ghc 8.10.
    hnix = dontCheck (super.hnix.override {
      # 2020-09-18: Those packages are all needed by hnix at versions newer than on stackage
      prettyprinter = self.prettyprinter_1_7_0; # at least 1.7
  
    });
  
    # Fails for non-obvious reasons while attempting to use doctest.
    search = dontCheck super.search;
  
negative.code:   xsd = dontCheck super.xsd;
    zip-archive = dontCheck super.zip-archive;  # https://github.com/jgm/zip-archive/issues/57
  
    # These test suites run for ages, even on a fast machine. This is nuts.
    Random123 = dontCheck super.Random123;
    systemd = dontCheck super.systemd;
  