fix: pypy problem cannot commit transaction (#3708)

* feat: test for pypy

Signed-off-by: yihong0618 <zouzou0208@gmail.com>

* fix: pypy failed

Signed-off-by: yihong0618 <zouzou0208@gmail.com>

* fix: drop test branch name in ci

Signed-off-by: yihong0618 <zouzou0208@gmail.com>

* fix: add news for it

Signed-off-by: yihong0618 <zouzou0208@gmail.com>

---------

Signed-off-by: yihong0618 <zouzou0208@gmail.com>

Author: yihong0618

.github/workflows/ci.yml

@@ -39,6 +39,9 @@ jobs:
           - python-version: 3.12
             os: ubuntu-latest
             install-via: script
+          - python-version: pypy-3.11
+            os: ubuntu-latest
+            install-via: pip
     steps:
       - uses: actions/checkout@v6.0.0
 

news/3708.bugfix.md

@@ -0,0 +1 @@
+Make sure cursor closing for fixing PyPy different gc mode also add PyPy in CI.

src/pdm/models/session.py

@@ -4,6 +4,7 @@
 import sqlite3
 import sys
 import threading
+from contextlib import closing
 from functools import lru_cache
 from pathlib import Path
 from typing import TYPE_CHECKING, Any, cast
@@ -95,7 +96,8 @@ def _ensure_connection(self) -> sqlite3.Connection:
                 self.database_path.parent.mkdir(parents=True, exist_ok=True)
                 full_path = self.database_path.resolve()
                 conn = sqlite3.connect(str(full_path), check_same_thread=False)
-                conn.execute("PRAGMA journal_mode=WAL")
+                with closing(conn.cursor()) as cursor:
+                    cursor.execute("PRAGMA foreign_keys=ON")
                 self.connection = conn
             if not self._initialized:
                 self._initialize_database()