Handle symbol lookup errors from zenity

- This makes it so the launcher will download the runtime platform when zenity fails due to symbol lookups. In the lutris flatpak beta version, the launcher can fail to download the runtime because of zenity failing lookup a symbol. Specifically, this error message: '/app/bin/zenity: symbol lookup error: /usr/lib/x86_64-linux-gnu/libatk-bridge-2.0.so.0: undefined symbol: atk_component_scroll_to'

ULWGL/ulwgl_plugins.py

@@ -153,7 +153,7 @@ def enable_reaper(env: Dict[str, str], command: List[str], local: Path) -> List[
     return command
 
 
-def enable_zenity(command: str, opts: List[str], msg: str) -> None:
+def enable_zenity(command: str, opts: List[str], msg: str) -> int:
     """Execute the command and pipe the output to Zenity.
 
     Intended to be used for long running operations (e.g. large file downloads)
@@ -188,4 +188,5 @@ def enable_zenity(command: str, opts: List[str], msg: str) -> None:
 
         # Close the Zenity process's standard input
         zenity_proc.stdin.close()
-        zenity_proc.wait()
+
+        return zenity_proc.wait()

ULWGL/ulwgl_util.py

@@ -87,7 +87,15 @@ def setup_runtime(root: Path, json: Dict[str, Any]) -> None:  # noqa: D103
         ]
 
         msg: str = "Downloading Runtime, please wait..."
-        enable_zenity(bin, opts, msg)
+        ret: int = enable_zenity(bin, opts, msg)
+
+        log.debug("Exit code returned from zenity: %s", ret)
+
+        # Handle the symbol lookup error from the zenity flatpak in lutris
+        if ret == 127:
+            raise FileNotFoundError
+        if ret != 0:
+            raise
     except TimeoutError:
         # Without the runtime, the launcher will not work
         # Just exit on timeout or download failure