anchor.diff: -{ pkgs
  +{ __splicedPackages
   , callPackage
   , config
   , darwin
  
positive.code: 
    pypy38_prebuilt = callPackage ./pypy/prebuilt.nix {
      # Not included at top-level
      self = pkgs.pythonInterpreters.pypy38_prebuilt;
      sourceVersion = {
        major = "7";
        minor = "3";
  
negative.code:     sha256 = "sha256-Ia4zn09QFtbKcwAwXz47VUNzg1yzw5qQQf4w5oEcgMY=";
      pythonVersion = "3.8";
      db = db.override { dbmSupport = !stdenv.isDarwin; };
      python = __splicedPackages.python27;
      inherit passthruFun;
      inherit (darwin) libunwind;
      inherit (darwin.apple_sdk.frameworks) Security;
    };
    pypy37 = __splicedPackages.pypy38.override {
      self = __splicedPackages.pythonInterpreters.pypy37;
      pythonVersion = "3.7";
      sha256 = "sha256-LtAqyecQhZxBvILer7CGGXkruaJ+6qFnbHQe3t0hTdc=";
    };
  
    pypy27_prebuilt = callPackage ./pypy/prebuilt_2_7.nix {
      # Not included at top-level
      self = __splicedPackages.pythonInterpreters.pypy27_prebuilt;
      sourceVersion = {
        major = "7";
        minor = "3";
  