From 5b43f4645b47f3ff862b1b645cfa6d0fb8f1e8e6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marcus=20M=C3=BCller?= <mmueller@gnuradio.org>
Date: Tue, 19 Oct 2021 19:49:14 +0200
Subject: [PATCH] GRC: be tolerant against Gtk.init_check failure, which seems to be flimsy

From 4de91e691fecb5abc3a842c9e25112de0db67e26 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marcus=20M=C3=BCller?= <mmueller@gnuradio.org>
Date: Tue, 19 Oct 2021 19:37:38 +0200
Subject: [PATCH] GRC: don't rely on GUI to inform about failure to initialize GUI

Index: grc/scripts/gnuradio-companion
--- grc/scripts/gnuradio-companion.orig
+++ grc/scripts/gnuradio-companion
@@ -18,7 +18,6 @@
 
 import os
 import sys
-import warnings
 
 
 GR_IMPORT_ERROR_MESSAGE = """\
@@ -47,22 +46,33 @@ def die(error, message):
         )
         d.set_title(type(error).__name__)
         d.run()
-        exit(1)
+        sys.exit(1)
     except ImportError:
-        exit(type(error).__name__ + '\n\n' + msg)
+        sys.exit(type(error).__name__ + '\n\n' + msg)
+    except Exception as _exception:
+        print(
+            "While trying to display an error message, another error occurred",
+            file=sys.stderr)
+        print(_exception, file=sys.stderr)
+        print("The original error message follows.", file=sys.stderr)
+        sys.exit(type(error).__name__ + '\n\n' + msg)
 
-
 def check_gtk():
     try:
-        warnings.filterwarnings("error")
         import gi
         gi.require_version('Gtk', '3.0')
         gi.require_version('PangoCairo', '1.0')
         gi.require_foreign('cairo', 'Context')
 
         from gi.repository import Gtk
-        Gtk.init_check()
-        warnings.filterwarnings("always")
+        success = Gtk.init_check()[0]
+        if not success:
+            # Don't display a warning dialogue. This seems to be a Gtk bug. If it
+            # still can display warning dialogues, it does probably work!
+            print(
+                "Gtk init_check failed. GRC might not be able to start a GUI.",
+                file=sys.stderr)
+
     except Exception as err:
         die(err, "Failed to initialize GTK. If you are running over ssh, "
                  "did you enable X forwarding and start ssh with -X?")
@@ -92,7 +102,7 @@ def run_main():
         print("Running from source tree")
         sys.path.insert(1, script_path[:-len(source_tree_subpath)])
         from grc.main import main
-    exit(main())
+    sys.exit(main())
 
 
 if __name__ == '__main__':