Add UI option for load-lib-local, default true

resources/ui/carla_settings.ui

@@ -395,6 +395,22 @@
            </layout>
           </widget>
          </item>
+         <item>
+          <widget class="QGroupBox" name="group_main_advanced">
+           <property name="title">
+            <string>Advanced</string>
+           </property>
+           <layout class="QVBoxLayout" name="verticalLayout_10">
+            <item>
+             <widget class="QCheckBox" name="ch_main_load_lib_local">
+              <property name="text">
+               <string>Load Carla backend in local namespace (RECOMMENDED)</string>
+              </property>
+             </widget>
+            </item>
+           </layout>
+          </widget>
+         </item>
          <item>
           <spacer name="verticalSpacer">
            <property name="orientation">

source/carla_settings.py

@@ -272,6 +272,9 @@ class CarlaSettingsW(QDialog):
             if self.host.processMode == ENGINE_PROCESS_MODE_CONTINUOUS_RACK:
                 self.ui.ch_engine_force_stereo.setEnabled(False)
 
+        if host.isControl or host.isPlugin:
+            self.ui.group_main_advanced.hide()
+
         # FIXME, pipes on win32 not working
         if WINDOWS:
             self.ui.ch_engine_prefer_ui_bridges.setChecked(False)
@@ -359,6 +362,11 @@ class CarlaSettingsW(QDialog):
 
         settings = QSettings("falkTX", "Carla2")
 
+        # ----------------------------------------------------------------------------------------------------
+        # Main
+
+        self.ui.ch_main_load_lib_local.setChecked(settings.value(CARLA_KEY_MAIN_LOAD_LIB_LOCAL, CARLA_DEFAULT_MAIN_LOAD_LIB_LOCAL, type=bool))
+
         # ----------------------------------------------------------------------------------------------------
         # Engine
 
@@ -491,6 +499,11 @@ class CarlaSettingsW(QDialog):
 
         settings = QSettings("falkTX", "Carla2")
 
+        # ----------------------------------------------------------------------------------------------------
+        # Main
+
+        settings.setValue(CARLA_KEY_MAIN_LOAD_LIB_LOCAL, self.ui.ch_main_load_lib_local.isChecked())
+
         # ----------------------------------------------------------------------------------------------------
         # Engine
 
@@ -599,6 +612,7 @@ class CarlaSettingsW(QDialog):
             self.ui.ch_main_use_custom_skins.setChecked(CARLA_DEFAULT_MAIN_USE_CUSTOM_SKINS)
             self.ui.ch_main_manage_uis.setChecked(CARLA_DEFAULT_MAIN_MANAGE_UIS)
             self.ui.ch_main_show_logs.setChecked(CARLA_DEFAULT_MAIN_SHOW_LOGS)
+            self.ui.ch_main_load_lib_local.setChecked(CARLA_DEFAULT_MAIN_LOAD_LIB_LOCAL)
 
         # ----------------------------------------------------------------------------------------------------
         # Canvas