+=head1 CONSTANTS
+
+=head2 C<NEXT>, C<REDO>, C<LAST>, C<SAVE>
+
+Codes to return from the C<report> callback to respectively proceed to the next repository, retry the current one, end it all, and save the return code.
+
+=cut
+
+use constant {
+ SAVE => 0x1,
+ NEXT => 0x2,
+ REDO => 0x4,
+ LAST => 0x8,
+};
+
+=head2 C<DIAG>, C<INFO>, C<WARN>, C<ERR> and C<CRIT>
+
+Message levels.
+
+=cut
+
+use constant {
+ INFO => 3,
+ WARN => 2,
+ ERR => 1,
+ CRIT => 0,
+};
+