Using the plugin manager to get hold of the 'plugin' plugin.

felixfontein · felixfontein · commit 05d10d397f8a · 2015-07-12T13:26:00.000+02:00
diff --git a/nikola/plugins/command/import_wordpress.py b/nikola/plugins/command/import_wordpress.py
@@ -59,8 +59,17 @@
 
 def install_plugin(site, plugin_name, output_dir=None, show_install_notes=False):
     LOGGER.notice("Installing plugin '{0}'".format(plugin_name))
-    plugin_installer = plugin.CommandPlugin()
-    plugin_installer.set_site(site)
+    # Get hold of the 'plugin' plugin
+    plugin_installer_info = site.plugin_manager.getPluginByName('plugin', 'Command')
+    if plugin_installer_info is None:
+        LOGGER.error('Internal error: cannot find the "plugin" plugin which is supposed to come with Nikola!')
+        return False
+    if not plugin_installer_info.is_activated:
+        # Someone might have disabled the plugin in the `conf.py` used
+        self.site.plugin_manager.activatePluginByName(plugin_installer_info.name)
+        plugin_installer_info.plugin_object.set_site(site)
+    plugin_installer = plugin_installer_info.plugin_object
+    # Try to install the requested plugin
     options = {}
     for option in plugin_installer.cmd_options:
         options[option['name']] = option['default']
@@ -69,6 +78,7 @@ def install_plugin(site, plugin_name, output_dir=None, show_install_notes=False)
     options['show_install_notes'] = show_install_notes
     if not plugin_installer.execute(options=options):
         return False
+    # Let the plugin manager find newly installed plugins
     site.plugin_manager.collectPlugins()
     return True
 
