anchor.diff:            (pkgs.lib.getAttrFromPath path pkgs);
         in testOn job.systems getPkg);
   
  -/*  selectMaintained = attrSet: let
  +  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 [])
  
positive.code:       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;
  
negative.code: 
    tarball = import ./make-tarball.nix;
  
  } // (mapTestOn ((selectMaintained pkgs) // rec {
  
    MPlayer = linux;
    abcde = linux;
  