From e2e69b3b386f5be90506b90dda3733613c1dee00 Mon Sep 17 00:00:00 2001
From: Yamashita Yuu <yamashita@geishatokyo.com>
Date: Tue, 1 Jul 2014 21:24:54 +0900
Subject: [PATCH] Create backup of original virtualenv within `$(pyenv
 root)/versions` when `--upgrade`

---
 bin/pyenv-virtualenv | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/bin/pyenv-virtualenv b/bin/pyenv-virtualenv
index 4fcd60c..fd62e22 100755
--- a/bin/pyenv-virtualenv
+++ b/bin/pyenv-virtualenv
@@ -317,8 +317,8 @@ unset USE_PYVENV
 detect_venv
 
 SEED="$(date "+%Y%m%d%H%M%S").$$"
-VIRTUALENV_ORIG="${TMP}/pyenv-virtualenv.${SEED}"
-REQUIREMENTS="${TMP}/pyenv-virtualenv.${SEED}.txt"
+VIRTUALENV_ORIG="${VIRTUALENV_PATH}.${SEED}"
+REQUIREMENTS="${TMP}/requirements.${SEED}.txt"
 
 # Upgrade existing virtualenv
 if [ -n "$UPGRADE" ]; then