anchor.diff:  
   
     extractMTDfs = {file, fs ? null} :
  -    with pkgs; runInLinuxVM (
  +    runInLinuxVM (
       stdenv.mkDerivation {
         name = "extract-file-mtd";
  -      buildInputs = [ util-linux mtdutils ];
  +      buildInputs = [ pkgs.util-linux pkgs.mtdutils ];
         buildCommand = ''
           ln -s ${kernel}/lib /lib
           ${kmod}/bin/modprobe mtd
  
positive.code: 
  
    extractFs = {file, fs ? null} :
      with pkgs; runInLinuxVM (
      stdenv.mkDerivation {
        name = "extract-file";
        buildInputs = [ util-linux ];
  
negative.code:      tarball must contain an RPM specfile. */
  
    buildRPM = attrs: runInLinuxImage (stdenv.mkDerivation ({
      prePhases = [ pkgs.prepareImagePhase pkgs.sysInfoPhase ];
      dontUnpack = true;
      dontConfigure = true;
  
  