define repository name uniqueness per namespace

state/models.go

@@ -111,15 +111,5 @@ func migrateLegacySQLite(engine *xorm.Engine) error {
 			return fmt.Errorf("migrate repo column repo_name to name: %w", err)
 		}
 	}
-	if len(columns) > 0 {
-		// Older schemas accidentally made namespace_id unique by itself, limiting
-		// a namespace to one repository. The model key is (namespace_id, name).
-		if _, err := engine.Exec("DROP INDEX IF EXISTS UQE_repo_cred"); err != nil {
-			return fmt.Errorf("drop legacy repo unique index: %w", err)
-		}
-		if _, err := engine.Exec("CREATE UNIQUE INDEX IF NOT EXISTS UQE_repo_cred ON repo (namespace_id, name)"); err != nil {
-			return fmt.Errorf("create repo unique index: %w", err)
-		}
-	}
 	return nil
 }