Flag to open shell in appimage for debugging.

noisicaa/ui/main.py

@@ -288,6 +288,11 @@ class MainApp(App):
             metavar='PATH',
             default=defaultLibDir,
             help="Path to noisicaa's libraries (default: {})".format(config.LIB_DIR))
+        if 'APPDIR' in os.environ:
+            parser.add_argument(
+                '--shell',
+                action='store_true',
+                default=False)
         parser.add_argument(
             'path',
             metavar="PROJECT",
@@ -305,6 +310,10 @@ class MainApp(App):
         if not self.__libDir.endswith('/'):
             self.__libDir += '/'
 
+        if getattr(args, 'shell', False):
+            os.chdir(os.environ['APPDIR'])
+            os.execlp('bash', 'bash')
+
     def __qmlEngineWarnings(self, warnings: List[QtQml.QQmlError]) -> None:
         qmlLogger = logging.getLogger('noisicaa.ui.qml')
         for warning in warnings: