anchor.diff:    });
   
     hurdHeaders = import ../os-specific/gnu/hurd {
  -    inherit fetchgit stdenv autoconf libtool texinfo machHeaders;
  -    mig = migCross;
  +    inherit fetchgit stdenv autoconf libtool texinfo mig machHeaders;
       automake = automake111x;
       headersOnly = true;
     };
  
positive.code:      //
  
       (if crossGNU
        then {
          inherit machHeaders hurdHeaders fetchgit;
          mig = migCross;
        }
        else { }))));
  
    glibcCross = glibc211Cross;
  
negative.code:   mig = import ../os-specific/gnu/mig {
      inherit fetchgit stdenv autoconf automake flex bison machHeaders;
    };
  
    mk = import ../development/tools/build-managers/mk {
      inherit fetchurl stdenv;
  