{
  lib,
  stdenv,
  fetchurl,
  bison,
}:

stdenv.mkDerivation (finalAttrs: {
  pname = "buddy";
  version = "2.4";

  src = fetchurl {
    url = "mirror://sourceforge/buddy/buddy-${finalAttrs.version}.tar.gz";
    sha256 = "0dl86l9xkl33wnkz684xa9axhcxx2zzi4q5lii0axnb9lsk81pyk";
  };

  buildInputs = [ bison ];
  patches = [ ./gcc-4.3.3-fixes.patch ];
  configureFlags = [
    "CFLAGS=-O3"
    "CXXFLAGS=-O3"
  ];
  env = {
    NIX_LDFLAGS = "-lm";
  }
  // lib.optionalAttrs stdenv.cc.isClang {
    NIX_CFLAGS_COMPILE = "-Wno-error=register";
  };

  doCheck = true;

  meta = {
    homepage = "https://sourceforge.net/projects/buddy/";
    description = "Binary decision diagram package";
    license = lib.licenses.buddy;

    platforms = lib.platforms.unix; # Once had cygwin problems
  };
})