[all] Link examples files (instead of cp)

zsh/.virtual_env_config.zsh_debian.example

@@ -1,17 +1,10 @@
 export WORKON_HOME=~/python-envs
+export VIRTUALENVWRAPPER_VIRTUALENV=/usr/bin/virtualenv
 mkdir -p $WORKON_HOME
 source /usr/share/virtualenvwrapper/virtualenvwrapper.sh
 
-function workon() {
-    if ! { [ "$TERM" = "screen" ] && [ -n "$TMUX" ]; } then
-        if ! { [ -z "$1" ] } then
-            tmux setenv VIRTUAL_ENV "$1"
-        fi
-        source /usr/share/virtualenvwrapper/virtualenvwrapper.sh
-        workon "$@"
-    fi
-}
-
 if [ -n "$VIRTUAL_ENV" ]; then
-  workon $VIRTUAL_ENV
+    if [[ -f "$VIRTUAL_ENV/bin/activate" ]]; then
+      source $VIRTUAL_ENV/bin/activate;
+    fi
 fi