Initialize augeas in a new method

certbot-apache/certbot_apache/augeas_configurator.py

@@ -1,7 +1,6 @@
 """Class of Augeas Configurators."""
 import logging
 
-import augeas
 
 from certbot import errors
 from certbot import reverter
@@ -29,6 +28,9 @@ class AugeasConfigurator(common.Plugin):
     def __init__(self, *args, **kwargs):
         super(AugeasConfigurator, self).__init__(*args, **kwargs)
 
+    def init_augeas(self):
+        """ Initialize the actual Augeas instance """
+        import augeas
         self.aug = augeas.Augeas(
             # specify a directory to load our preferred lens from
             loadpath=constants.AUGEAS_LENS_DIR,

certbot-apache/certbot_apache/configurator.py

@@ -150,6 +150,12 @@ class ApacheConfigurator(augeas_configurator.AugeasConfigurator):
         :raises .errors.PluginError: If there is any other error
 
         """
+        # Perform the actual Augeas initialization to be able to react
+        try:
+            self.init_augeas()
+        except ImportError:
+            raise errors.NoInstallationError("Problem in Augeas installation")
+
         # Verify Apache is installed
         if not util.exe_exists(constants.os_constant("restart_cmd")[0]):
             raise errors.NoInstallationError