mlt-qt5: fix build with Qt 5.4

pkgs/development/libraries/mlt/qt5.nix

@@ -0,0 +1,39 @@
+{ stdenv, fetchurl, SDL, ffmpeg, frei0r, jack2, libdv, libsamplerate
+, libvorbis, libxml2, makeWrapper, movit, pkgconfig, qt5, sox
+}:
+
+stdenv.mkDerivation rec {
+  name = "mlt-${version}";
+  version = "0.9.6";
+
+  src = fetchurl {
+    url = "https://github.com/mltframework/mlt/archive/v${version}.tar.gz";
+    sha256 = "0s8ypg0q50zfcmq527y8cbdvzxhiqidm1923k28ar8jqmjp45ssh";
+  };
+
+  buildInputs = [
+    SDL ffmpeg frei0r jack2 libdv libsamplerate libvorbis libxml2
+    makeWrapper movit pkgconfig qt5.base qt5.svg sox
+  ];
+
+  # Mostly taken from:
+  # http://www.kdenlive.org/user-manual/downloading-and-installing-kdenlive/installing-source/installing-mlt-rendering-engine
+  configureFlags = [
+    "--avformat-swscale" "--enable-gpl" "--enable-gpl" "--enable-gpl3"
+    "--enable-opengl"
+  ];
+
+  enableParallelBuilding = true;
+
+  postInstall = ''
+    wrapProgram $out/bin/melt --prefix FREI0R_PATH : ${frei0r}/lib/frei0r-1
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Open source multimedia framework, designed for television broadcasting";
+    homepage = http://www.mltframework.org/;
+    license = licenses.gpl3;
+    maintainers = [ maintainers.goibhniu ];
+    platforms = platforms.linux;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -7190,9 +7190,7 @@ let
     qt = qt4;
   };
 
-  mlt-qt5 = callPackage ../development/libraries/mlt {
+  mlt-qt5 = callPackage ../development/libraries/mlt/qt5.nix { };
-    qt = qt5;
-  };
 
   movit = callPackage ../development/libraries/movit { };