anchor.diff:    else alias;
   
   in
  -  lib.mapAttrs tweakAlias aliases // self;
  +  lib.mapAttrs tweakAlias aliases // helperFunctions // self // overrides;
   
   in
     pkgs
  
positive.code:   pkgsFun = pkgs: overrides:
      let
        defaultScope = pkgs // pkgs.xorg;
        self = helperFunctions // self_ // overrides;
  
        # Helper functions that are exported through `pkgs'.
        helperFunctions =
  
negative.code: 
    mg = callPackage ../applications/editors/mg { };
  
  }; # self =
  
  
  aliases = import ./aliases.nix self;
  