drop support for CockroachDB 22.1.x

Author: timgraham

.github/workflows/tests.yml

@@ -29,8 +29,6 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - crdb-version: v22.1.22
-            use_psycopg2: psycopg2
           - crdb-version: v22.2.14
           - crdb-version: v22.2.14
             use_psycopg2: psycopg2

README.md

@@ -144,7 +144,3 @@ using back to Cockroach Labs. To disable this, set
      - [overlaps_left (&<), overlaps_right (&>), overlaps_above (&<|),
        overlaps_below (&>|)](https://github.com/cockroachdb/cockroach/issues/57098)
      - [strictly_above (|>>), strictly_below (<<|)](https://github.com/cockroachdb/cockroach/issues/57095)
-
-## Known issues and limitations in CockroachDB 22.1.x and earlier
-
-- `QuerySet.select_for_update(skip_locked=True)` isn't supported.

django_cockroachdb/features.py

@@ -1,5 +1,3 @@
-import operator
-
 from django.db.backends.postgresql.features import (
     DatabaseFeatures as PostgresDatabaseFeatures,
 )
@@ -13,9 +11,6 @@ class DatabaseFeatures(PostgresDatabaseFeatures):
     # https://github.com/cockroachdb/django-cockroachdb/issues/206
     can_clone_databases = False
 
-    # Not supported: https://github.com/cockroachdb/cockroach/issues/40476
-    has_select_for_update_skip_locked = property(operator.attrgetter('is_cockroachdb_22_2'))
-
     # Not supported: https://github.com/cockroachdb/cockroach/issues/31632
     can_defer_constraint_checks = False
 
@@ -78,10 +73,6 @@ def introspected_field_types(self):
         'swedish_ci': 'sv-x-icu',
     }
 
-    @cached_property
-    def is_cockroachdb_22_2(self):
-        return self.connection.cockroachdb_version >= (22, 2)
-
     @cached_property
     def django_test_expected_failures(self):
         expected_failures = super().django_test_expected_failures