anchor.diff:          }
         '';
   
  -      phases = [ "preBuild" "buildPhase" "installPhase" ];
  +      dontUnpack = true;
       } // args);
   
   in rec {
  
positive.code:     langInputs = [ en ];
  
      buildPhase = ''
        cat $src1 | aspell-plain en_US-science --dont-validate-words --lang=en
        cat $src2 | aspell-plain en_GB-science --dont-validate-words --lang=en
      '';
      installPhase = "aspell-install en_US-science en_GB-science";
  
  
negative.code: 
      langInputs = [ en ];
  
      buildPhase = ''
        runHook preBuild
        cat $src | aspell-affix en-computers --dont-validate-words --lang=en
        runHook postBuild
      '';
      installPhase = "aspell-install en-computers";
  
      meta = {
  