dfasma: build with Qt 5.5

pkgs/applications/audio/dfasma/default.nix

···
-{ stdenv, fetchFromGitHub, fftw, libsndfile, qt5 }:
+{ stdenv, fetchFromGitHub, fftw, libsndfile, qtbase, qtmultimedia }:
 
 let
 
···
     owner = "gillesdegottex";
   };
 
-  buildInputs = [ fftw libsndfile qt5.base qt5.multimedia ];
+  buildInputs = [ fftw libsndfile qtbase qtmultimedia ];
 
   postPatch = ''
     substituteInPlace dfasma.pro --replace '$$DFASMAVERSIONGITPRO' '${version}'
···
   '';
 
   enableParallelBuilding = true;
+
+  postInstall = ''
+    wrapQtProgram "$out/bin/dfasma"
+  '';
 
   meta = with stdenv.lib; {
     inherit version;

pkgs/top-level/all-packages.nix

···
     plugins = [];
   };
 
-  dfasma = callPackage ../applications/audio/dfasma { };
+  dfasma = qt5Libs.callPackage ../applications/audio/dfasma { };
 
   dia = callPackage ../applications/graphics/dia {
     inherit (pkgs.gnome) libart_lgpl libgnomeui;