add migration for upcoming change to tiger tables

[nominatim.git] / nominatim / version.py

diff --git a/nominatim/version.py b/nominatim/version.py
index 8d1c6849cf80a4fb334a9096414b2b934c197722..289af9346ef3c7957ca6c7873c54172759c090bb 100644 (file)
--- a/nominatim/version.py
+++ b/nominatim/version.py
@@ -1,8 +1,30 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# This file is part of Nominatim. (https://nominatim.org)
+#
+# Copyright (C) 2022 by the Nominatim developer community.
+# For a full list of authors see the git log.
 """
 Version information for Nominatim.
 """
 
-NOMINATIM_VERSION = "3.6.0"
+# Version information: major, minor, patch level, database patch level
+#
+# The first three numbers refer to the last released version.
+#
+# The database patch level tracks important changes between releases
+# and must always be increased when there is a change to the database or code
+# that requires a migration.
+#
+# When adding a migration on the development branch, raise the patch level
+# to 99 to make sure that the migration is applied when updating from a
+# patch release to the next minor version. Patch releases usually shouldn't
+# have migrations in them. When they are needed, then make sure that the
+# migration can be reapplied and set the migration version to the appropriate
+# patch level when cherry-picking the commit with the migration.
+#
+# Released versions always have a database patch level of 0.
+NOMINATIM_VERSION = (4, 0, 99, 4)
 
-POSTGRESQL_REQUIRED_VERSION = (9, 3)
+POSTGRESQL_REQUIRED_VERSION = (9, 5)
 POSTGIS_REQUIRED_VERSION = (2, 2)