Executes a child program asynchronously with the right environment to automatically connect to this compositor.
See [func@GLib.spawn_async_with_pipes_and_fds] for a full description; this function simply calls [ func@GLib.spawn_async_with_pipes_and_fds] without any pipes and with WAYLAND_DISPLAY set to `CasildaCompositor: socket` or a fd already connected to the compositor and set to WAYLAND_SOCKET if its NULL.
Please note GDK_BACKEND, WAYLAND_DISPLAY and WAYLAND_SOCKET are set by this function they are ignored from envp and DISPLAY is removed to avoid clients try to connect using X11
| this |
a `CasildaCompositor` |
| working_directory |
child's current working directory, or null to inherit parent's |
| argv |
child's argument vector |
| envp |
child's environment, or null to inherit parent's |
| flags |
flags from SpawnFlags |
| child_setup |
function to run in the child just before `exec()` |
| child_pid |
return location for child process reference, or null |
| user_data |
user data for |
|
TRUE on success, FALSE if error is set. |