SDL2_mixer: build with libmodplug and smpeg2

pkgs/development/libraries/SDL2_mixer/default.nix

@@ -1,4 +1,6 @@
-{ stdenv, lib, fetchurl, SDL2, libogg, libvorbis, smpeg, flac, enableNativeMidi ? false, fluidsynth ? null }:
+{ stdenv, lib, fetchurl, autoconf, pkgconfig, which
+, SDL2, libogg, libvorbis, smpeg2, flac, libmodplug
+, enableNativeMidi ? false, fluidsynth ? null }:
 
 stdenv.mkDerivation rec {
   name = "SDL2_mixer-${version}";
@@ -9,7 +11,15 @@ stdenv.mkDerivation rec {
     sha256 = "0pv9jzjpcjlbiaybvwrb4avmv46qk7iqxlnqrd2dfj82c4mgc92s";
   };
 
-  propagatedBuildInputs = [ SDL2 libogg libvorbis fluidsynth smpeg flac ];
+  nativeBuildInputs = [ autoconf pkgconfig which ];
+
+  propagatedBuildInputs = [ SDL2 libogg libvorbis fluidsynth smpeg2 flac libmodplug ];
+
+  patches = [ ./libmodplug.patch ];
+
+  preConfigure = ''
+    ./autogen.sh
+  '';
 
   configureFlags = [ "--disable-music-ogg-shared" ] ++ lib.optional enableNativeMidi "--enable-music-native-midi-gpl";
 

pkgs/development/libraries/SDL2_mixer/libmodplug.patch

@@ -0,0 +1,13 @@
+diff --git a/configure.in b/configure.in
+index d511646..77dc3fe 100644
+--- a/configure.in
++++ b/configure.in
+@@ -258,7 +258,7 @@ if test x$enable_music_mod = xyes -a x$enable_music_mod_modplug = xyes; then
+             have_libmodplug_lib=yes
+         ], [dnl
+             AC_CHECK_HEADER([libmodplug/modplug.h], [have_libmodplug_hdr=yes])
+-            AC_CHECK_LIB([modplug], [have_libmodplug_lib=yes])
++            AC_CHECK_LIB([modplug], [ModPlug_Load], [have_libmodplug_lib=yes])
+         ])
+ 
+     if test x$have_libmodplug_hdr = xyes -a x$have_libmodplug_lib = xyes; then