anchor.diff:    src = fetchurl {
       url = "mirror://sourceforge/e2fsprogs/e2fsprogs/v${version}/${name}.tar.gz";
       hashOutput = false;
  -    sha256 = "5be0ffc01b9720a3f3ccfc86396016baf1334b98751fefa09e0c63eaffdc3897";
  +    sha256 = "04abf8c2c7c9a70aa3aa9757da23a929baf18423ccd06e8a0320c2effe091fd1";
     };
   
     buildInputs = [
  
positive.code: }:
  
  let
    version = "1.43.9";
  in
  stdenv.mkDerivation rec {
    name = "e2fsprogs-${version}";
  
negative.code:   configureFlags = [
      "--enable-symlink-install"
      "--enable-relative-symlinks"
      "--enable-elf-shlibs"
      "--disable-profile"
      "--disable-gcov"
  