Hi,

I know you don't support a compilation out of proton build system.
But have fixe issue on 6.3-5 but 6.3-6 have new compilation issue.
And my OS don't support your build system.
@aeikum If you have any idea how to fix ?

dlls/user32/focus.c: In function ‘GetForegroundWindow’:
dlls/user32/focus.c:372:78: error: ‘const struct get_thread_input_reply’ has no member named ‘foreground’
  372 |         if (!wine_server_call_err( req )) ret = wine_server_ptr_handle( reply->foreground );
      |                                                                              ^~
make[2]: *** [Makefile:125538: dlls/user32/focus.o] Error 1
make[2]: *** Waiting for unfinished jobs....
dlls/user32/input.c: In function ‘GetCursorInfo’:
dlls/user32/input.c:293:57: error: ‘const struct get_thread_input_reply’ has no member named ‘cursor’
  293 |             pci->hCursor = wine_server_ptr_handle( reply->cursor );
      |                                                         ^~
dlls/user32/input.c:294:32: error: ‘const struct get_thread_input_reply’ has no member named ‘show_count’
  294 |             pci->flags = (reply->show_count >= 0) ? CURSOR_SHOWING : 0;
      |                                ^~
make[2]: *** [Makefile:125598: dlls/user32/input.o] Error 1
dlls/user32/message.c: In function ‘peek_message’:
dlls/user32/message.c:2743:50: error: ‘const struct get_message_reply’ has no member named ‘active_hooks’
 2743 |                 thread_info->active_hooks = reply->active_hooks;
      |                                                  ^~
make[2]: *** [Makefile:125696: dlls/user32/message.o] Error 1

Best Regards