{stdenv, fetchurl}:

stdenv.mkDerivation {
  name = "rcs-5.7";

  src = fetchurl {
    url = ftp://ftp.cs.purdue.edu/pub/RCS/rcs-5.7.tar;
    md5 = "f7b3f106bf87ff6344df38490f6a02c5";
  };

  patches = [ ./no-root.patch ];

  preConfigure = ''
    makeFlags="man1dir=$out/share/man/man1 man5dir=$out/share/man/man5";
  '';

  meta = {
    homepage = http://www.cs.purdue.edu/homes/trinkle/RCS/;
    description = "Revision Control System, a version management system";
    maintainers = [ stdenv.lib.maintainers.eelco stdenv.lib.maintainers.simons ];
    platforms = stdenv.lib.platforms.all;
  };
}