Constant value per OS basis if installer should handle enabling / disabling sites

letsencrypt-apache/letsencrypt_apache/configurator.py

@@ -1089,7 +1089,7 @@ class ApacheConfigurator(augeas_configurator.AugeasConfigurator):
 
         """
         # Always return true for distros without enabled / available
-        if self.conf("enmod") == None:
+        if not constants.os_constant("handle_sites"):
             return True
         enabled_dir = os.path.join(self.parser.root, "sites-enabled")
         for entry in os.listdir(enabled_dir):

letsencrypt-apache/letsencrypt_apache/constants.py

@@ -11,6 +11,7 @@ CLI_DEFAULTS_DEBIAN = dict(
     dismod="a2dismod",
     le_vhost_ext="-le-ssl.conf",
     handle_mods=True,
+    handle_sites=True,
     challenge_location="/etc/apache2"
 )
 CLI_DEFAULTS_CENTOS = dict(
@@ -21,6 +22,7 @@ CLI_DEFAULTS_CENTOS = dict(
     dismod=None,
     le_vhost_ext="-le-ssl.conf",
     handle_mods=False,
+    handle_sites=False,
     challenge_location="/etc/httpd/conf.d"
 )
 CLI_DEFAULTS = {