qtractor: enable parallel building

+2
+2
pkgs/applications/audio/qtractor/default.nix
··· 23 23 suil 24 24 ]; 25 25 26 + enableParallelBuilding = true; 27 + 26 28 meta = with stdenv.lib; { 27 29 description = "Audio/MIDI multi-track sequencer"; 28 30 homepage = http://qtractor.sourceforge.net;