From a73817eeccfa0236c4662778fb14c39a0047ab2e Mon Sep 17 00:00:00 2001
From: "Yamashita, Yuu" <peek824545201@gmail.com>
Date: Thu, 12 Nov 2015 00:28:44 +0000
Subject: [PATCH] Use canonical name for `VIRTUAL_ENV` as a workaround for
 IPython (fixes #113)

---
 bin/pyenv-sh-activate | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/bin/pyenv-sh-activate b/bin/pyenv-sh-activate
index 592a002..d80f742 100755
--- a/bin/pyenv-sh-activate
+++ b/bin/pyenv-sh-activate
@@ -14,6 +14,10 @@
 set -e
 [ -n "$PYENV_DEBUG" ] && set -x
 
+resolve_link() {
+  $(type -p greadlink readlink | head -1) "$1"
+}
+
 unset FORCE
 unset QUIET
 unset VERBOSE
@@ -86,6 +90,10 @@ done
 shell="${PYENV_SHELL:-${SHELL##*/}}"
 prefix="$(pyenv-prefix "${venv}")"
 
+if [ -L "${prefix}" ]; then
+  prefix="$(resolve_link "${prefix}" 2>/dev/null)"
+fi
+
 if [[ "${VIRTUAL_ENV}" == "${prefix}" ]]; then
   if [ -z "${QUIET}" ]; then
     echo "pyenv-virtualenv: version \`${venv}' is already activated" 1>&2