fixes bug where packages in a virtual env are considered serializable

Author: tobymao

examples/wursthall/macros/macros.py

@@ -1,4 +1,4 @@
-from sqlglot import expressions as exp
+from sqlglot import exp
 
 from sqlmesh.core.macros import MacroEvaluator, macro
 

sqlmesh/cli/example_project.py

@@ -7,7 +7,7 @@
 DEFAULT_CONFIG = """connections:
     local:
         type: duckdb
-        database: db.duckdb
+        database: db.db
 
 default_connection: local
 """

sqlmesh/utils/metaprogramming.py

@@ -33,6 +33,9 @@ def _is_relative_to(path: t.Optional[Path | str], other: t.Optional[Path | str])
     if isinstance(other, str):
         other = Path(other)
 
+    if "site-packages" in str(path):
+        return False
+
     try:
         path.absolute().relative_to(other.absolute())
         return True