Gtk4 migration (#693)

Co-authored-by: Qubasa <consulting@qube.email>
Reviewed-on: https://git.clan.lol/clan/clan-core/pulls/693
Co-authored-by: Johannes Kirschbauer <hsjobeki@gmail.com>
Co-committed-by: Johannes Kirschbauer <hsjobeki@gmail.com>

pkgs/clan-cli/clan_cli/__init__.py

@@ -1,7 +1,6 @@
 import argparse
 import logging
 import sys
-import traceback
 from collections.abc import Sequence
 from pathlib import Path
 from types import ModuleType
@@ -136,13 +135,15 @@ def main() -> None:
         args.func(args)
     except ClanError as e:
         if args.debug:
-            traceback.print_exc()
+            log.exception(e)
             sys.exit(1)
         if isinstance(e, ClanCmdError):
             if e.cmd.msg:
                 print(e.cmd.msg, file=sys.stderr)
             else:
                 print(e, file=sys.stderr)
+        elif isinstance(e, ClanError):
+            print(e, file=sys.stderr)
         sys.exit(1)