privateer: improve meta, but mark as broken

I didn't succeed to make it build, so I don't push the partial attempt.

pkgs/games/privateer/default.nix

@@ -28,10 +28,16 @@ stdenv.mkDerivation {
     cp vegastrike $out/bin
     cp vegaserver $out/bin
   '';
-  
-  meta = {
+
+  meta = with stdenv.lib; {
     homepage = http://privateer.sourceforge.net/;
-    longDescription = "";
-    maintainers = with stdenv.lib.maintainers; [ chaoflow ];
+    description = "Adventure space flight simulation computer game";
+    license = licenses.gpl2Plus; # and a special license for art data
+    # https://sourceforge.net/p/privateer/code/HEAD/tree/privgold/trunk/data/art-license.txt
+
+    maintainers = with maintainers; [ chaoflow ];
+    platforms = with platforms; linux ++ darwin;
+    hydraPlatforms = [];
+    broken = true; # it won't build
   };
 }