anchor.diff:      }
       else fetchurl {
         url = "mirror://gnu/glibc/glibc-${version}.tar.bz2";
  -      sha256 = "01vlr473skl08xpcjz0b4lw23lsnskf5kx9s8nxwa4mwa9f137vm";
  +      sha256 = "05hjz816a2hmzc44gxxi9vrdx6l9f23az794zj45xsxr94yfpy12";
       };
   
     # `fetchurl' is a function and thus should not be passed to the
  
positive.code:     else needsPortsCross;
  
    srcPorts = fetchurl {
      # A tarball I manually made from a git clone, for the tag "glibc-2.12.1".
      url = http://vicerveza.homeunix.net/~viric/tmp/nix/glibc-ports-2.12.1.tar.gz;
      sha256 = "160dr4v9210r6d7xp0af5kx1pljcjaa2x4ya88psjiphcr6bsy37";
    };
  
  in
  
negative.code: 
  let
    # For GNU/Hurd, see below.
    version = if hurdHeaders != null then "20100512" else "2.12.2";
  
    needsPortsNative = stdenv.isMips || stdenv.isArm;
    needsPortsCross = cross.arch == "mips" || cross.arch == "arm";
  