Use is-at-least (thanks dreur) and remove some commented code.

10_hooks

@@ -23,7 +23,7 @@ function title() {
 # precmd is called just before the prompt is printed
 function precmd() {
   # This may not be the best way of doing this.
-  if [[ $ZSH_VERSION < 4.3.7 ]]
+  if [[ ! is-at-least < 4.3.7 ]]
   then
     vcs_info_msg_0_=$(git-prompt)
   elif [[ $git_enable == 1 ]]
@@ -40,30 +40,3 @@ function precmd() {
 function preexec() {
   title "$1" "$USER@%m" "%35<...<%~"
 }
-
-# Loads up .env.rc or .env files if there in the current tree.
-# http://stackoverflow.com/questions/171563/whats-in-your-zshrc#211917
-# cd -q is only available on new zsh versions. 
-# i.e. it's in finks (4.5.6), but not Apple's (4.3.4)
-# 
-# WARNING: this breaks 'cd -', since it seems to change oldpwd to /.
-# 
-# if [[ $ZSH_VERSION > 4.3.4 ]]; then 
-#   function chpwd; {
-#   DIRECTORY="$PWD"
-#   while true; do
-#     if [ -f './.env.rc' ]; then
-#       source './.env.rc'
-#       break
-#     fi
-#     # Removed as it clashes with zshkit'szshenv.
-#     # if [ -f './env' ]; then
-#     #     source './env'
-#     #     break
-#     # fi
-#     [ "$PWD" = '/' ] && break
-#     cd -q ..
-#   done
-#   cd -q "$DIRECTORY"
-#   }
-# fi