anchor.diff:    xorg = recurseIntoAttrs ((lib.callPackageWith __splicedPackages ../servers/x11/xorg {
     }).overrideScope' (lib.callPackageWith __splicedPackages ../servers/x11/xorg/overrides.nix {
       inherit (darwin) apple_sdk;
  -    bootstrap_cmds = if stdenv.isDarwin then darwin.bootstrap_cmds else null;
  +    bootstrap_cmds = if stdenv.isDarwin then buildPackages.darwin.bootstrap_cmds else null;
       python = python2; # Incompatible with Python 3x
       udev = if stdenv.isLinux then udev else null;
       libdrm = if stdenv.isLinux then libdrm else null;
  
positive.code:   kinetic-cpp-client = callPackage ../development/libraries/kinetic-cpp-client { };
  
    krb5 = callPackage ../development/libraries/kerberos/krb5.nix {
      inherit (darwin) bootstrap_cmds;
    };
    krb5Full = krb5;
    libkrb5 = krb5.override {
  
negative.code:   };
  
    ccl = callPackage ../development/compilers/ccl {
      inherit (buildPackages.darwin) bootstrap_cmds;
    };
  
    chez = callPackage ../development/compilers/chez {
  