anchor.diff:      }) // (lib.optionalAttrs (builtins.elem "x86_64-linux" supportedSystems) {
         stdenvBootstrapTools.x86_64-linux =
           { inherit (import ../stdenv/linux/make-bootstrap-tools.nix { system = "x86_64-linux"; }) dist test; };
  +    }) // (lib.optionalAttrs (builtins.elem "aarch64-linux" supportedSystems) {
  +      stdenvBootstrapTools.aarch64-linux =
  +        { inherit (import ../stdenv/linux/make-bootstrap-tools.nix { system = "aarch64-linux"; }) dist test; };
       }) // (lib.optionalAttrs (builtins.elem "x86_64-darwin" supportedSystems) {
         stdenvBootstrapTools.x86_64-darwin =
           let
  
positive.code: { nixpkgs ? { outPath = (import ../.. {}).lib.cleanSource ../..; revCount = 1234; shortRev = "abcdef"; }
  , officialRelease ? false
  , # The platforms for which we build Nixpkgs.
    supportedSystems ? [ "x86_64-linux" "i686-linux" "x86_64-darwin" ]
  , # Strip most of attributes when evaluating to spare memory usage
    scrubJobs ? true
  }:
  
negative.code:               jobs.lib-tests
                jobs.stdenv.x86_64-linux
                jobs.stdenv.i686-linux
                jobs.stdenv.aarch64-linux
                jobs.stdenv.x86_64-darwin
                jobs.linux.x86_64-linux
                jobs.linux.i686-linux
                jobs.linux.aarch64-linux
                jobs.python.x86_64-linux
                jobs.python.i686-linux
                jobs.python.aarch4-linux
                jobs.python.x86_64-darwin
                jobs.python3.x86_64-linux
                jobs.python3.i686-linux
                jobs.python3.aarchh64-linux
                jobs.python3.x86_64-darwin
                # Many developers use nix-repl
                jobs.nix-repl.x86_64-linux
                jobs.nix-repl.i686-linux
                jobs.nix-repl.aarch64-linux
                jobs.nix-repl.x86_64-darwin
                # Needed by travis-ci to test PRs
                jobs.nox.i686-linux
  