--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libervia/desktop_kivy/core/kivy_hack.py	Fri Jun 02 18:26:16 2023 +0200
@@ -0,0 +1,70 @@
+#!/usr//bin/env python2
+
+
+#Libervia Desktop-Kivy
+# Copyright (C) 2016-2021 Jérôme Poisson (goffi@goffi.org)
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+CONF_KIVY_LEVEL = 'log_kivy_level'
+
+
+def do_hack():
+    """work around Kivy hijacking of logs and arguments"""
+    # we remove args so kivy doesn't use them
+    # this is need to avoid kivy breaking QuickApp args handling
+    import sys
+    ori_argv = sys.argv[:]
+    sys.argv = sys.argv[:1]
+    from .constants import Const as C
+    from libervia.backend.core import log_config
+    log_config.libervia_configure(C.LOG_BACKEND_STANDARD, C)
+
+    from . import config
+    kivy_level = config.config_get(C.CONFIG_SECTION, CONF_KIVY_LEVEL, 'follow').upper()
+
+    # kivy handles its own loggers, we don't want that!
+    import logging
+    root_logger = logging.root
+    kivy_logger = logging.getLogger('kivy')
+    ori_addHandler = kivy_logger.addHandler
+    kivy_logger.addHandler = lambda __: None
+    ori_setLevel = kivy_logger.setLevel
+    if kivy_level == 'FOLLOW':
+        # level is following SàT level
+        kivy_logger.setLevel = lambda level: None
+    elif kivy_level == 'KIVY':
+        # level will be set by Kivy according to its own conf
+        pass
+    elif kivy_level in C.LOG_LEVELS:
+        kivy_logger.setLevel(kivy_level)
+        kivy_logger.setLevel = lambda level: None
+    else:
+        raise ValueError("Unknown value for {name}: {value}".format(name=CONF_KIVY_LEVEL, value=kivy_level))
+
+    # during import kivy set its logging stuff
+    import kivy
+    kivy # to avoid pyflakes warning
+
+    # we want to separate kivy logs from other logs
+    logging.root = root_logger
+    from kivy import logger
+    sys.stderr = logger.previous_stderr
+
+    # we restore original methods
+    kivy_logger.addHandler = ori_addHandler
+    kivy_logger.setLevel = ori_setLevel
+
+    # we restore original arguments
+    sys.argv = ori_argv