anchor.diff:        nixpkgs = nixpkgsFunc { system = "x86_64-darwin"; };
       };
     };
  +
   in let this = rec {
     inherit nixpkgs
             nixpkgsCross
  
positive.code:         arm64 = lib.warn "nixpkgsCross.ios.arm64 has been deprecated, using nixpkgsCross.ios.aarch64 instead." aarch64;
        };
      };
      haskellLib = nixpkgs.haskell.lib;
      filterGit = builtins.filterSource (path: type: !(builtins.any (x: x == baseNameOf path) [".git" "tags" "TAGS" "dist"]));
      # Retrieve source that is controlled by the hack-* scripts; it may be either a stub or a checked-out git repo
      hackGet = p:
        if builtins.pathExists (p + "/git.json") then (
  
negative.code:         };
        } // config;
      });
  
      inherit (nixpkgs) lib fetchurl fetchgit fetchgitPrivate fetchFromGitHub;
  
      nixpkgsCross = {
        android = lib.mapAttrs (_: args: if args == null then null else nixpkgsFunc args) rec {
          aarch64 = {
  