--- a/libervia/backend/core/constants.py	Tue Jun 18 12:06:45 2024 +0200
+++ b/libervia/backend/core/constants.py	Wed Jun 19 18:44:57 2024 +0200
@@ -46,9 +46,7 @@
     APP_NAME_ALT = "Libervia"
     APP_NAME_FILE = "libervia"
     APP_NAME_FULL = f"{APP_NAME} ({APP_COMPONENT})"
-    APP_VERSION = (
-        backend.__version__
-    )
+    APP_VERSION = backend.__version__
     APP_RELEASE_NAME = "La Ruche"
     APP_URL = "https://libervia.org"
 
@@ -117,8 +115,8 @@
     ## Roster jids selection ##
     PUBLIC = "PUBLIC"
     ALL = (
-        "ALL"
-    )  # ALL means all known contacts, while PUBLIC means everybody, known or not
+        "ALL"  # ALL means all known contacts, while PUBLIC means everybody, known or not
+    )
     GROUP = "GROUP"
     JID = "JID"
 
@@ -226,9 +224,7 @@
     PI_IMPORT_NAME = "import_name"
     PI_MAIN = "main"
     PI_HANDLER = "handler"
-    PI_TYPE = (
-        "type"
-    )  #  FIXME: should be types, and should handle single unicode type or tuple of types (e.g. "blog" and "import")
+    PI_TYPE = "type"  #  FIXME: should be types, and should handle single unicode type or tuple of types (e.g. "blog" and "import")
     PI_MODES = "modes"
     PI_PROTOCOLS = "protocols"
     PI_DEPENDENCIES = "dependencies"
@@ -405,14 +401,13 @@
     KEY_ATTACHMENTS_PREVIEW = "preview"
     KEY_ATTACHMENTS_RESIZE = "resize"
 
-
     ## Common extra keys/values ##
     KEY_ORDER_BY = "order_by"
     KEY_USE_CACHE = "use_cache"
     KEY_DECRYPT = "decrypt"
 
-    ORDER_BY_CREATION = 'creation'
-    ORDER_BY_MODIFICATION = 'modification'
+    ORDER_BY_CREATION = "creation"
+    ORDER_BY_MODIFICATION = "modification"
 
     # internationalisation
     DEFAULT_LOCALE = "en_GB"
@@ -432,9 +427,7 @@
     EXIT_CONFLICT = 19  # an item already exists
     EXIT_USER_CANCELLED = 20  # user cancelled action
     EXIT_INTERNAL_ERROR = 111  # unexpected error
-    EXIT_FILE_NOT_EXE = (
-        126
-    )  # a file to be executed was found, but it was not an executable utility (cf. man 1 exit)
+    EXIT_FILE_NOT_EXE = 126  # a file to be executed was found, but it was not an executable utility (cf. man 1 exit)
     EXIT_CMD_NOT_FOUND = 127  # a utility to be executed was not found (cf. man 1 exit)
     EXIT_CMD_ERROR = 127  # a utility to be executed returned an error exit code
     EXIT_SIGNAL_INT = 128  # a command was interrupted by a signal (cf. man 1 exit)
@@ -492,8 +485,9 @@
 
         # we don't want the very verbose jnius log when we are in DEBUG level
         import logging
-        logging.getLogger('jnius').setLevel(logging.WARNING)
-        logging.getLogger('jnius.reflect').setLevel(logging.WARNING)
+
+        logging.getLogger("jnius").setLevel(logging.WARNING)
+        logging.getLogger("jnius.reflect").setLevel(logging.WARNING)
 
         Environment = autoclass("android.os.Environment")
 
@@ -518,9 +512,10 @@
         ]
     else:
         import os
+
         # we use parent of "sat" module dir as last config path, this is useful for
         # per instance configurations (e.g. a dev instance and a main instance)
-        root_dir = dirname(dirname(backend.__file__)) + '/'
+        root_dir = dirname(dirname(backend.__file__)) + "/"
         Const.CONFIG_PATHS = (
             # /etc/_sat.conf is used for system-related settings (e.g. when media_dir
             # is set by the distribution and has not reason to change, or in a Docker
@@ -541,10 +536,10 @@
         # on recent versions of Flatpak, FLATPAK_ID is set at run time
         # it seems that this is not the case on older versions,
         # but FLATPAK_SANDBOX_DIR seems set then
-        if os.getenv('FLATPAK_ID') or os.getenv('FLATPAK_SANDBOX_DIR'):
+        if os.getenv("FLATPAK_ID") or os.getenv("FLATPAK_SANDBOX_DIR"):
             # for Flatpak, the conf can't be set in /etc or $HOME, so we have
             # to add /app
-            Const.CONFIG_PATHS.append('/app/')
+            Const.CONFIG_PATHS.append("/app/")
 
         ## Configuration ##
         Const.DEFAULT_CONFIG = {
@@ -564,4 +559,3 @@
             realpath(expanduser(path) + "sat.conf")
             for path in Const.CONFIG_PATHS
         ]
-