From ba9d6dbe3d7eb985ec4b02fa2b9f349d0be96ce7 Mon Sep 17 00:00:00 2001
From: Clay Dugo <claydugo@gmail.com>
Date: Mon, 12 Jan 2026 22:11:15 -0500
Subject: [PATCH 1/3] gh-143768: rebuild broken interpreter symlinks

---
 Lib/test/test_venv.py | 18 ++++++++++++++++++
 Lib/venv/__init__.py  |  2 ++
 2 files changed, 20 insertions(+)

diff --git a/Lib/test/test_venv.py b/Lib/test/test_venv.py
index 68bcf535eada10..c5516b7ce1ff67 100644
--- a/Lib/test/test_venv.py
+++ b/Lib/test/test_venv.py
@@ -597,6 +597,24 @@ def test_failed_symlink(self):
             filepath_regex = r"'[A-Z]:\\\\(?:[^\\\\]+\\\\)*[^\\\\]+'"
             self.assertRegex(err, rf"Unable to symlink {filepath_regex} to {filepath_regex}")
 
+    @requireVenvCreate
+    @unittest.skipUnless(can_symlink(), 'Needs symlinks')
+    def test_broken_symlink_in_existing_venv(self):
+        """
+        Test creating a venv when a stale venv with broken symlinks exists.
+        """
+        bindir = os.path.join(self.env_dir, self.bindir)
+        os.makedirs(bindir)
+        python = os.path.join(bindir, 'python3')
+        os.symlink('/path/to/deleted/conda/env/bin/python3', python)
+        self.assertTrue(os.path.islink(python))
+        self.assertFalse(os.path.exists(python))
+
+        builder = venv.EnvBuilder(with_pip=False, symlinks=True)
+        self.run_with_capture(builder.create, self.env_dir)
+        self.assertTrue(os.path.islink(python))
+        self.assertTrue(os.path.exists(python))
+
     @requireVenvCreate
     def test_multiprocessing(self):
         """
diff --git a/Lib/venv/__init__.py b/Lib/venv/__init__.py
index 19eddde700bcf9..cf8d12ec943bde 100644
--- a/Lib/venv/__init__.py
+++ b/Lib/venv/__init__.py
@@ -267,6 +267,8 @@ def symlink_or_copy(self, src, dst, relative_symlinks_ok=False):
         switch to a different set of files instead.)
         """
         assert os.name != 'nt'
+        if os.path.islink(dst) and not os.path.exists(dst):
+            os.unlink(dst)
         force_copy = not self.symlinks
         if not force_copy:
             try:

From 332c799a4772c87b6ca2a0088a64c4544f2ef3a3 Mon Sep 17 00:00:00 2001
From: Clay Dugo <claydugo@gmail.com>
Date: Mon, 12 Jan 2026 22:18:26 -0500
Subject: [PATCH 2/3] add NEWS entry

try again news

again
---
 .../Library/2026-01-12-22-24-28.gh-issue-143768.RbLnkFx.rst     | 2 ++
 1 file changed, 2 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Library/2026-01-12-22-24-28.gh-issue-143768.RbLnkFx.rst

diff --git a/Misc/NEWS.d/next/Library/2026-01-12-22-24-28.gh-issue-143768.RbLnkFx.rst b/Misc/NEWS.d/next/Library/2026-01-12-22-24-28.gh-issue-143768.RbLnkFx.rst
new file mode 100644
index 00000000000000..ce0f74f0f55a02
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-01-12-22-24-28.gh-issue-143768.RbLnkFx.rst
@@ -0,0 +1,2 @@
+:mod:`venv`: Rebuild broken interpreter symlinks when upgrading a virtual
+environment. Fix by Clay Dugo.

From 186d2b361b10c7c8065a044e05925581b843324a Mon Sep 17 00:00:00 2001
From: Clay Dugo <claydugo@gmail.com>
Date: Mon, 12 Jan 2026 22:50:05 -0500
Subject: [PATCH 3/3] skip windows as its symlinks

---
 Lib/test/test_venv.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Lib/test/test_venv.py b/Lib/test/test_venv.py
index c5516b7ce1ff67..fd71640a04f193 100644
--- a/Lib/test/test_venv.py
+++ b/Lib/test/test_venv.py
@@ -598,6 +598,7 @@ def test_failed_symlink(self):
             self.assertRegex(err, rf"Unable to symlink {filepath_regex} to {filepath_regex}")
 
     @requireVenvCreate
+    @unittest.skipIf(os.name == 'nt', 'not relevant on Windows')
     @unittest.skipUnless(can_symlink(), 'Needs symlinks')
     def test_broken_symlink_in_existing_venv(self):
         """