X-Git-Url: https://git.openstreetmap.org/nominatim.git/blobdiff_plain/f6e894a53af83a69f553555cb4a6248d57a58391..7d140970b76176bcb380fda92d7f615943540869:/nominatim/version.py

diff --git a/nominatim/version.py b/nominatim/version.py
index 8d1c6849..75f50e25 100644
--- a/nominatim/version.py
+++ b/nominatim/version.py
@@ -1,8 +1,45 @@
+# 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.
 """
+from typing import Optional, Tuple
 
-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, 2, 1, 0)
 
-POSTGRESQL_REQUIRED_VERSION = (9, 3)
+POSTGRESQL_REQUIRED_VERSION = (9, 6)
 POSTGIS_REQUIRED_VERSION = (2, 2)
+
+# Cmake sets a variable @GIT_HASH@ by executing 'git --log'. It is not run
+# on every execution of 'make'.
+# cmake/tool-installed.tmpl is used to build the binary 'nominatim'. Inside
+# there is a call to set the variable value below.
+GIT_COMMIT_HASH : Optional[str] = None
+
+
+# pylint: disable=consider-using-f-string
+def version_str(version:Tuple[int, int, int, int] = NOMINATIM_VERSION) -> str:
+    """
+    Return a human-readable string of the version.
+    """
+    return '{}.{}.{}-{}'.format(*version)