anchor.diff:        l_set_av
         l_set_office
       ];
  -  };
  +  });
   
     l_set_base = buildEnv {
       name = "l-set-base";
  
positive.code:       l_set_media
        l_set_haskell
      ];
    };
  
    l_set_work = buildEnv {
      name = "l-set-work";
      ignoreCollisions = true;
      paths = [
  
negative.code:       l_set_games
        l_set_misc
      ];
    });
  
    l_set_web = buildEnv {
      name = "l-set-web";
  