anchor.diff:        };
   
   
  -    build = pkgs.lib.genAttrs systems (system:
  -
  -      let pkgs = import nixpkgs { inherit system; }; in
  -
  -      with pkgs;
  +    build = pkgs.lib.genAttrs (systems ++ crossSystems) (system:
  +
  +      let pkgs = if builtins.elem system systems
  +                 then import nixpkgs { inherit system; }
  +                 else import nixpkgs { crossSystem = { inherit system; }; };
  +      in with pkgs;
   
         with import ./release-common.nix { inherit pkgs; };
   
  
positive.code:       });
  
  
      binaryTarball = pkgs.lib.genAttrs systems (system:
  
        with import nixpkgs { inherit system; };
  
        let
          toplevel = builtins.getAttr system jobs.build;
  
negative.code:       });
  
  
      perlBindings = pkgs.lib.genAttrs (systems ++ crossSystems) (system:
  
        let pkgs = if builtins.elem system systems
                   then import nixpkgs { inherit system; }
                   else import nixpkgs { crossSystem = { inherit system; }; };
        in with pkgs;
  
        releaseTools.nixBuild {
          name = "nix-perl";
  