From 2433577d8896fb172f41dacbbc9bed91605c562d Mon Sep 17 00:00:00 2001
From: James Turk <dev@jamesturk.net>
Date: Tue, 21 Nov 2023 09:18:53 -0600
Subject: [PATCH] gh-112252: Fix error on unset $OSNAME in venv/activate
 (GH-112253) (cherry picked from commit
 e1540ae74d1fce62f53e25838ba21746ba5d8444)

Co-authored-by: James Turk <dev@jamesturk.net>
---
 Lib/venv/scripts/common/activate | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/venv/scripts/common/activate b/Lib/venv/scripts/common/activate
index 408df5cb93b9e9..d11c7630ac4ad5 100644
--- a/Lib/venv/scripts/common/activate
+++ b/Lib/venv/scripts/common/activate
@@ -39,7 +39,7 @@ deactivate () {
 deactivate nondestructive
 
 # on Windows, a path can contain colons and backslashes and has to be converted:
-if [ "$OSTYPE" = "cygwin" ] || [ "$OSTYPE" = "msys" ] ; then
+if [ "${OSTYPE:-}" = "cygwin" ] || [ "${OSTYPE:-}" = "msys" ] ; then
     # transform D:\path\to\venv to /d/path/to/venv on MSYS
     # and to /cygdrive/d/path/to/venv on Cygwin
     export VIRTUAL_ENV=$(cygpath "__VENV_DIR__")