mlt: Add jackrack and ladspa support

pkgs/development/libraries/mlt/default.nix

@@ -2,7 +2,8 @@
 , SDL, ffmpeg, frei0r, libjack2, libdv, libsamplerate, libexif
 , libvorbis, libxml2, movit, pkg-config, sox, fftw, opencv4, SDL2
 , gtk2, genericUpdater, common-updater-scripts, libebur128
-, swig, which, ncurses, enablePython ? false, python
+, jack2, ladspa-sdk, swig, which, ncurses
+, enablePython ? false, python
 }:
 
 stdenv.mkDerivation rec {
@@ -17,12 +18,13 @@ stdenv.mkDerivation rec {
   };
 
   buildInputs = [
-    SDL ffmpeg frei0r libjack2 libdv libsamplerate libvorbis libxml2
-    movit sox libexif gtk2 fftw libebur128 opencv4 SDL2
+    SDL ffmpeg frei0r libjack2 libdv libsamplerate libvorbis libxml2.dev
+    movit sox libexif gtk2 fftw libebur128 opencv4 SDL2 jack2
+    ladspa-sdk
   ] ++ lib.optional enablePython ncurses;
 
-  nativeBuildInputs = [ pkg-config makeWrapper ]
-  ++ lib.optionals enablePython [ which python swig ];
+  nativeBuildInputs = [ pkg-config makeWrapper which ]
+  ++ lib.optionals enablePython [ python swig ];
 
   # Mostly taken from:
   # http://www.kdenlive.org/user-manual/downloading-and-installing-kdenlive/installing-source/installing-mlt-rendering-engine