anchor.diff:        if attrSet.meta.maintainers != [] then 
           attrSet.meta.platforms
         else
  -        []; */
  +        []; 
   
     /* Common platform groups on which to test packages. */
     inherit (pkgs.lib.platforms) linux darwin cygwin allBut all;
  
positive.code: 
    tarball = import ./make-tarball.nix;
  
  } // (mapTestOn (/*(selectMaintained pkgs) // */ rec {
  
    MPlayer = linux;
    abcde = linux;
  
negative.code:           (pkgs.lib.getAttrFromPath path pkgs);
        in testOn job.systems getPkg);
  
    selectMaintained = attrSet: let
      pairs = pkgs.lib.concatMap 
        (x: let val = builtins.tryEval (processPackage (builtins.getAttr x attrSet)); in
          if val.success && val.value != [] then [{name=x; value=val.value;}] else [])
  