Address major performance issue with recreating requests sessions over and over

Author: matteius

pipenv/routines/install.py

@@ -701,7 +701,6 @@ def do_init(
         pypi_mirror=pypi_mirror,
         categories=categories,
     )
-    err.print(packages_updated)
 
     if not allow_global and not deploy and "PIPENV_ACTIVE" not in os.environ:
         console.print(

pipenv/utils/resolver.py

@@ -5,7 +5,7 @@
 import sys
 import tempfile
 import warnings
-from functools import lru_cache
+from functools import cached_property, lru_cache
 from pathlib import Path
 from typing import Dict, List, Optional
 
@@ -308,7 +308,7 @@ def pip_options(self):
         )
         return pip_options
 
-    @property
+    @cached_property
     def session(self):
         return self.pip_command._build_session(self.pip_options)
 

tests/integration/test_lock.py

@@ -588,7 +588,7 @@ def test_lock_package_with_compatible_release_specifier(pipenv_instance_private_
 @pytest.mark.install
 def test_default_lock_overwrite_dev_lock(pipenv_instance_pypi):
     with pipenv_instance_pypi() as p:
-        c = p.pipenv("install 'click==6.7'")
+        c = p.pipenv("install click==6.7")
         assert c.returncode == 0
         c = p.pipenv("install -d flask")
         assert c.returncode == 0