Add check constraint to validate texture pack licenses

migrations/versions/23afcf580aae_.py

@@ -0,0 +1,23 @@
+"""empty message
+
+Revision ID: 23afcf580aae
+Revises: dabd7ab14339
+Create Date: 2023-05-11 22:02:24.021652
+
+"""
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = '23afcf580aae'
+down_revision = 'dabd7ab14339'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_check_constraint("ck_license_txp", "package", "type != 'TXP' OR license_id = media_license_id")
+
+
+def downgrade():
+    op.drop_constraint("ck_license_txp", "package", type_="check")