tagparser: set meta.platforms

pkgs/development/libraries/tagparser/default.nix

@@ -33,6 +33,7 @@ stdenv.mkDerivation rec {
     description = "C++ library for reading and writing MP4/M4A/AAC (iTunes), ID3, Vorbis, Opus, FLAC and Matroska tags";
     license = licenses.gpl2;
     maintainers = [ maintainers.matthiasbeyer ];
+    platforms = platforms.all;
   };
 }