glib_sys::g_spawn_async

pub unsafe extern fn g_spawn_async(working_directory: *const c_char, argv: *mut *mut c_char, envp: *mut *mut c_char, flags: GSpawnFlags, child_setup: GSpawnChildSetupFunc, user_data: gpointer, child_pid: *mut GPid, error: *mut *mut GError) -> gboolean