anchor.diff:  , buildPlatform, hostPlatform
   , pythonSupport ? buildPlatform == hostPlatform
   , icuSupport ? false, icu ? null
  +, enableStatic ? false
   }:
   
   let
  
positive.code:     moveToOutput bin/xml2-config "$dev"
      moveToOutput lib/xml2Conf.sh "$dev"
      moveToOutput share/man/man1 "$bin"
    '';
  
    passthru = { inherit version; pythonSupport = pythonSupport; };
  
negative.code:   };
  
    outputs = [ "bin" "dev" "out" "man" "doc" ]
      ++ lib.optional pythonSupport "py"
      ++ lib.optional enableStatic "static";
    propagatedBuildOutputs = "out bin" + lib.optionalString pythonSupport " py";
  
    buildInputs = lib.optional pythonSupport python
  