Replace pythonz with pyenv

Depending on Python to manage Python is silly.

modules/python/init.zsh

@@ -6,29 +6,35 @@
 #   Sebastian Wiesner <lunaryorn@googlemail.com>
 #
 
-# Load pythonz into the shell session.
-if [[ -s $HOME/.pythonz/bin/pythonz ]]; then
-  path=($HOME/.pythonz/bin $path)
-fi
+# Load manually installed pyenv into the shell session.
+if [[ -s "$HOME/.pyenv/bin/pyenv" ]]; then
+  path=("$HOME/.pyenv/bin" $path)
+  eval "$(pyenv init -)"
 
-# Return if requirements are not found.
-if (( ! $+commands[python] && ! $+commands[pythonz] )); then
-  return 1
-fi
+# Load package manager installed pyenv into the shell session.
+elif (( $+commands[pyenv] )); then
+  eval "$(pyenv init -)"
 
 # Prepend PEP 370 per user site packages directory, which defaults to
 # ~/Library/Python on Mac OS X and ~/.local elsewhere, to PATH.
-if [[ "$OSTYPE" == darwin* ]]; then
-  path=($HOME/Library/Python/*/bin(N) $path)
 else
-  # This is subject to change.
-  path=($HOME/.local/bin $path)
+  if [[ "$OSTYPE" == darwin* ]]; then
+    path=($HOME/Library/Python/*/bin(N) $path)
+  else
+    # This is subject to change.
+    path=($HOME/.local/bin $path)
+  fi
+fi
+
+# Return if requirements are not found.
+if (( ! $+commands[python] && ! $+commands[pyenv] )); then
+  return 1
 fi
 
 # Load virtualenvwrapper into the shell session.
 if (( $+commands[virtualenvwrapper_lazy.sh] )); then
   # Set the directory where virtual environments are stored.
-  export WORKON_HOME=$HOME/.virtualenvs
+  export WORKON_HOME="$HOME/.virtualenvs"
 
   # Disable the virtualenv prompt.
   VIRTUAL_ENV_DISABLE_PROMPT=1
@@ -42,14 +48,3 @@ fi
 
 alias py='python'
 
-# pythonz
-if (( $+commands[pythonz] )); then
-  alias pyz='pythonz'
-  alias pyzc='pythonz cleanup'
-  alias pyzi='pythonz install'
-  alias pyzl='pythonz list'
-  alias pyzL='pythonz list -a'
-  alias pyzu='pythonz update'
-  alias pyzx='pythonz uninstall'
-fi
-