Fix: Postgres selection, DBENGINE and migrations (#12299)

docker/compose/docker-compose.portainer.yml

@@ -56,6 +56,7 @@ services:
     environment:
       PAPERLESS_REDIS: redis://broker:6379
       PAPERLESS_DBHOST: db
+      PAPERLESS_DBENGINE: postgres
     env_file:
       - stack.env
 volumes:

docker/compose/docker-compose.postgres-tika.yml

@@ -62,6 +62,7 @@ services:
     environment:
       PAPERLESS_REDIS: redis://broker:6379
       PAPERLESS_DBHOST: db
+      PAPERLESS_DBENGINE: postgresql
       PAPERLESS_TIKA_ENABLED: 1
       PAPERLESS_TIKA_GOTENBERG_ENDPOINT: http://gotenberg:3000
       PAPERLESS_TIKA_ENDPOINT: http://tika:9998

docker/compose/docker-compose.postgres.yml

@@ -56,6 +56,7 @@ services:
     environment:
       PAPERLESS_REDIS: redis://broker:6379
       PAPERLESS_DBHOST: db
+      PAPERLESS_DBENGINE: postgresql
 volumes:
   data:
   media:

docker/compose/docker-compose.sqlite-tika.yml

@@ -51,6 +51,7 @@ services:
     env_file: docker-compose.env
     environment:
       PAPERLESS_REDIS: redis://broker:6379
+      PAPERLESS_DBENGINE: sqlite
       PAPERLESS_TIKA_ENABLED: 1
       PAPERLESS_TIKA_GOTENBERG_ENDPOINT: http://gotenberg:3000
       PAPERLESS_TIKA_ENDPOINT: http://tika:9998

docker/compose/docker-compose.sqlite.yml

@@ -42,6 +42,7 @@ services:
     env_file: docker-compose.env
     environment:
       PAPERLESS_REDIS: redis://broker:6379
+      PAPERLESS_DBENGINE: sqlite
 volumes:
   data:
   media:

docker/rootfs/etc/s6-overlay/s6-rc.d/init-migrations/run

@@ -10,8 +10,12 @@ cd "${PAPERLESS_SRC_DIR}"
 
 # The whole migrate, with flock, needs to run as the right user
 if [[ -n "${USER_IS_NON_ROOT}" ]]; then
+	exec s6-setlock -n "${data_dir}/migration_lock" python3 manage.py check --tag compatibility paperless
 	exec s6-setlock -n "${data_dir}/migration_lock" python3 manage.py migrate --skip-checks --no-input
 else
+	exec s6-setuidgid paperless \
+		s6-setlock -n "${data_dir}/migration_lock" \
+		python3 manage.py check --tag compatibility paperless
 	exec s6-setuidgid paperless \
 		s6-setlock -n "${data_dir}/migration_lock" \
 		python3 manage.py migrate --skip-checks --no-input

src/documents/migrations/0003_remove_document_storage_type.py

@@ -5,7 +5,7 @@ from django.db import migrations
 
 class Migration(migrations.Migration):
     dependencies = [
-        ("documents", "0003_workflowaction_order"),
+        ("documents", "0002_squashed"),
     ]
 
     operations = [

src/documents/migrations/0003_workflowaction_order.py

@@ -1,18 +0,0 @@
-# Generated by Django 5.2.9 on 2026-01-20 20:06
-
-from django.db import migrations
-from django.db import models
-
-
-class Migration(migrations.Migration):
-    dependencies = [
-        ("documents", "0002_squashed"),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name="workflowaction",
-            name="order",
-            field=models.PositiveIntegerField(default=0, verbose_name="order"),
-        ),
-    ]

src/documents/migrations/0004_workflowtrigger_filter_has_any_correspondents_and_more.py

@@ -6,7 +6,7 @@ from django.db import models
 
 class Migration(migrations.Migration):
     dependencies = [
-        ("documents", "0004_remove_document_storage_type"),
+        ("documents", "0003_remove_document_storage_type"),
     ]
 
     operations = [

src/documents/migrations/0005_alter_document_checksum_unique.py

@@ -6,7 +6,7 @@ from django.db import models
 
 class Migration(migrations.Migration):
     dependencies = [
-        ("documents", "0005_workflowtrigger_filter_has_any_correspondents_and_more"),
+        ("documents", "0004_workflowtrigger_filter_has_any_correspondents_and_more"),
     ]
 
     operations = [

src/documents/migrations/0006_document_content_length.py

@@ -7,7 +7,7 @@ from django.db import models
 
 class Migration(migrations.Migration):
     dependencies = [
-        ("documents", "0006_alter_document_checksum_unique"),
+        ("documents", "0005_alter_document_checksum_unique"),
     ]
 
     operations = [

src/documents/migrations/0007_sharelinkbundle.py

@@ -46,7 +46,7 @@ def revoke_share_link_bundle_permissions(apps, schema_editor):
 class Migration(migrations.Migration):
     dependencies = [
         migrations.swappable_dependency(settings.AUTH_USER_MODEL),
-        ("documents", "0007_document_content_length"),
+        ("documents", "0006_document_content_length"),
     ]
 
     operations = [

src/documents/migrations/0008_workflowaction_passwords_alter_workflowaction_type.py

@@ -6,7 +6,7 @@ from django.db import models
 
 class Migration(migrations.Migration):
     dependencies = [
-        ("documents", "0008_sharelinkbundle"),
+        ("documents", "0007_sharelinkbundle"),
     ]
 
     operations = [

src/documents/migrations/0009_alter_document_content_length.py

@@ -7,7 +7,7 @@ from django.db import models
 
 class Migration(migrations.Migration):
     dependencies = [
-        ("documents", "0009_workflowaction_passwords_alter_workflowaction_type"),
+        ("documents", "0008_workflowaction_passwords_alter_workflowaction_type"),
     ]
 
     operations = [

src/documents/migrations/0010_optimize_integer_field_sizes.py

@@ -7,7 +7,7 @@ from django.db import models
 
 class Migration(migrations.Migration):
     dependencies = [
-        ("documents", "0010_alter_document_content_length"),
+        ("documents", "0009_alter_document_content_length"),
     ]
 
     operations = [

src/documents/migrations/0011_alter_workflowaction_type.py

@@ -6,7 +6,7 @@ from django.db import models
 
 class Migration(migrations.Migration):
     dependencies = [
-        ("documents", "0011_optimize_integer_field_sizes"),
+        ("documents", "0010_optimize_integer_field_sizes"),
     ]
 
     operations = [

src/documents/migrations/0012_document_root_document.py

@@ -7,7 +7,7 @@ from django.db import models
 
 class Migration(migrations.Migration):
     dependencies = [
-        ("documents", "0012_alter_workflowaction_type"),
+        ("documents", "0011_alter_workflowaction_type"),
     ]
 
     operations = [

src/documents/migrations/0013_alter_paperlesstask_task_name.py

@@ -6,7 +6,7 @@ from django.db import models
 
 class Migration(migrations.Migration):
     dependencies = [
-        ("documents", "0013_document_root_document"),
+        ("documents", "0012_document_root_document"),
     ]
 
     operations = [

src/documents/migrations/0014_savedview_visibility_to_ui_settings.py

@@ -124,7 +124,7 @@ def _restore_visibility_fields(apps, schema_editor):
 
 class Migration(migrations.Migration):
     dependencies = [
-        ("documents", "0014_alter_paperlesstask_task_name"),
+        ("documents", "0013_alter_paperlesstask_task_name"),
     ]
 
     operations = [

src/documents/migrations/0015_document_version_index_and_more.py

@@ -7,7 +7,7 @@ from django.db import models
 
 class Migration(migrations.Migration):
     dependencies = [
-        ("documents", "0015_savedview_visibility_to_ui_settings"),
+        ("documents", "0014_savedview_visibility_to_ui_settings"),
         migrations.swappable_dependency(settings.AUTH_USER_MODEL),
     ]
 

src/documents/tests/test_migration_saved_view_visibility.py

@@ -6,8 +6,8 @@ SIDEBAR_VIEWS_VISIBLE_IDS_KEY = "sidebar_views_visible_ids"
 
 
 class TestMigrateSavedViewVisibilityToUiSettings(TestMigrations):
-    migrate_from = "0013_document_root_document"
-    migrate_to = "0015_savedview_visibility_to_ui_settings"
+    migrate_from = "0013_alter_paperlesstask_task_name"
+    migrate_to = "0014_savedview_visibility_to_ui_settings"
 
     def setUpBeforeMigration(self, apps) -> None:
         User = apps.get_model("auth", "User")
@@ -132,8 +132,8 @@ class TestMigrateSavedViewVisibilityToUiSettings(TestMigrations):
 
 
 class TestReverseMigrateSavedViewVisibilityFromUiSettings(TestMigrations):
-    migrate_from = "0015_savedview_visibility_to_ui_settings"
-    migrate_to = "0014_alter_paperlesstask_task_name"
+    migrate_from = "0014_savedview_visibility_to_ui_settings"
+    migrate_to = "0013_alter_paperlesstask_task_name"
 
     def setUpBeforeMigration(self, apps) -> None:
         User = apps.get_model("auth", "User")

src/documents/tests/test_migration_share_link_bundle.py

@@ -2,8 +2,8 @@ from documents.tests.utils import TestMigrations
 
 
 class TestMigrateShareLinkBundlePermissions(TestMigrations):
-    migrate_from = "0007_document_content_length"
-    migrate_to = "0008_sharelinkbundle"
+    migrate_from = "0006_document_content_length"
+    migrate_to = "0007_sharelinkbundle"
 
     def setUpBeforeMigration(self, apps) -> None:
         User = apps.get_model("auth", "User")
@@ -24,8 +24,8 @@ class TestMigrateShareLinkBundlePermissions(TestMigrations):
 
 
 class TestReverseMigrateShareLinkBundlePermissions(TestMigrations):
-    migrate_from = "0008_sharelinkbundle"
-    migrate_to = "0007_document_content_length"
+    migrate_from = "0007_sharelinkbundle"
+    migrate_to = "0006_document_content_length"
 
     def setUpBeforeMigration(self, apps) -> None:
         User = apps.get_model("auth", "User")

src/paperless/checks.py

@@ -7,6 +7,7 @@ from pathlib import Path
 
 from django.conf import settings
 from django.core.checks import Error
+from django.core.checks import Tags
 from django.core.checks import Warning
 from django.core.checks import register
 from django.db import connections
@@ -204,15 +205,16 @@ def audit_log_check(app_configs, **kwargs):
     return result
 
 
-@register()
+@register(Tags.compatibility)
 def check_v3_minimum_upgrade_version(
     app_configs: object,
     **kwargs: object,
 ) -> list[Error]:
-    """Enforce that upgrades to v3 must start from v2.20.9.
+    """
+    Enforce that upgrades to v3 must start from v2.20.10.
 
     v3 squashes all prior migrations into 0001_squashed and 0002_squashed.
-    If a user skips v2.20.9, the data migration in 1075_workflowaction_order
+    If a user skips v2.20.10, the data migration in 1075_workflowaction_order
     never runs and the squash may apply schema changes against an incomplete
     database state.
     """
@@ -239,7 +241,7 @@ def check_v3_minimum_upgrade_version(
         if {"0001_squashed", "0002_squashed"} & applied:
             return []
 
-        # On v2.20.9 exactly — squash will pick up cleanly from here
+        # On v2.20.10 exactly — squash will pick up cleanly from here
         if "1075_workflowaction_order" in applied:
             return []
 
@@ -250,8 +252,8 @@ def check_v3_minimum_upgrade_version(
         Error(
             "Cannot upgrade to Paperless-ngx v3 from this version.",
             hint=(
-                "Upgrading to v3 can only be performed from v2.20.9."
-                "Please upgrade to v2.20.9, run migrations, then upgrade to v3."
+                "Upgrading to v3 can only be performed from v2.20.10."
+                "Please upgrade to v2.20.10, run migrations, then upgrade to v3."
                 "See https://docs.paperless-ngx.com/setup/#upgrading for details."
             ),
             id="paperless.E002",

src/paperless/settings/custom.py

@@ -209,7 +209,6 @@ def parse_db_settings(data_dir: Path) -> dict[str, dict[str, Any]]:
         engine = get_choice_from_env(
             "PAPERLESS_DBENGINE",
             {"sqlite", "postgresql", "mariadb"},
-            default="sqlite",
         )
     except ValueError:
         # MariaDB users already had to set PAPERLESS_DBENGINE, so it was picked up above

src/paperless/tests/test_checks.py

@@ -581,11 +581,11 @@ class TestV3MinimumUpgradeVersionCheck:
     ) -> None:
         """
         GIVEN:
-            - DB is on an old v2 version (pre-v2.20.9)
+            - DB is on an old v2 version (pre-v2.20.10)
         WHEN:
             - The v3 upgrade check runs
         THEN:
-            - The error hint explicitly references v2.20.9 so users know what to do
+            - The error hint explicitly references v2.20.10 so users know what to do
         """
         mocker.patch.dict(
             "paperless.checks.connections",
@@ -593,7 +593,7 @@ class TestV3MinimumUpgradeVersionCheck:
         )
         result = check_v3_minimum_upgrade_version(None)
         assert len(result) == 1
-        assert "v2.20.9" in result[0].hint
+        assert "v2.20.10" in result[0].hint
 
     def test_db_error_is_swallowed(self, mocker: MockerFixture) -> None:
         """