anchor.diff:      inherit fetchurl stdenv;
     };
   
  -  gzip = useFromStdenv (stdenv ? gzip) stdenv.gzip (import ../tools/compression/gzip {
  -    inherit fetchurl stdenv;
  -  });
  -
  -  bzip2 = useFromStdenv (stdenv ? bzip2) stdenv.bzip2 (import ../tools/compression/bzip2 {
  -    inherit fetchurl stdenv;
  -  });
  +  gzip = useFromStdenv (stdenv ? gzip) stdenv.gzip
  +    (import ../tools/compression/gzip {
  +      inherit fetchurl stdenv;
  +    });
  +
  +  bzip2 = useFromStdenv (stdenv ? bzip2) stdenv.bzip2
  +    (import ../tools/compression/bzip2 {
  +      inherit fetchurl stdenv;
  +    });
   
     zdelta = (import ../tools/compression/zdelta) {
       inherit fetchurl stdenv;
  
positive.code:   };
  
    diffutils = useFromStdenv (stdenv ? diffutils) stdenv.diffutils
    (import ../tools/text/diffutils {
      inherit fetchurl stdenv coreutils;
    });
  
    gnupatch = (import ../tools/text/gnupatch) {
      inherit fetchurl stdenv;
  
negative.code:     inherit fetchurl stdenv;
    };
  
    gnutar = useFromStdenv (stdenv ? gnutar) stdenv.gnutar
      (import ../tools/archivers/gnutar {
        inherit fetchurl stdenv;
      });
  
    gnutarDiet = (import ../tools/archivers/gnutar-diet) {
      inherit fetchurl stdenv dietgcc;
  