Added better support for pyenv, virtualenvwrapper, and autoenv

working in concert with one another.
Features added:
- Added a pyenv-virtualenv plugin which creates virtual environments
  using the current pyenv python version
- `cd` into a directory that has a virtual environment already created
  and autoenv will automatically activate that environment
- Current virtual environment is displayed in command prompt

plugins/available/pyenv-virtualenv.plugin.bash

@@ -0,0 +1,58 @@
+# make sure virtualenvwrapper is enabled if available
+
+cite about-plugin
+about-plugin 'pyenv-virtualenvwrapper helper functions'
+
+export PYENV_VIRTUALENVWRAPPER_PREFER_PYVENV="true"
+
+# Activate autoenv
+source /usr/local/opt/autoenv/activate.sh
+
+function mkenv {
+  about 'create a new virtualenv for this directory'
+  group 'pyenv-virtualenv'
+
+  eval "touch .env"
+  eval "echo \"#!/bin/bash\" >> .env"
+  eval "echo \"eval \"wovenv\"\" >> .env"
+  cwd=`basename \`pwd\``
+  mkvirtualenv --distribute $cwd
+}
+
+function mkvbranch {
+  about 'create a new virtualenv for the current branch'
+  group 'pyenv-virtualenv'
+
+  mkvirtualenv --distribute "$(basename `pwd`)@$SCM_BRANCH"
+}
+
+function wovbranch {
+  about 'sets workon branch'
+  group 'pyenv-virtualenv'
+
+  workon "$(basename `pwd`)@$SCM_BRANCH"
+}
+
+function wovenv {
+  about 'works on the virtualenv for this directory'
+  group 'virtualenv'
+
+  workon "$(basename `pwd`)"
+}
+
+function rmenv {
+  about 'removes virtualenv for this directory'
+  group 'virtualenv'
+
+  eval "deactivate"
+  rmvirtualenv "$(basename `pwd`)"
+  eval "rm .env"
+}
+
+function rmenvbranch {
+  about 'removes virtualenv for this directory'
+  group 'virtualenv'
+
+  eval "deactivate"
+  rmvirtualenv "$(basename `pwd`)@$SCM_BRANCH"
+}

plugins/available/pyenv.plugin.bash

@@ -1,8 +1,9 @@
 cite about-plugin
 about-plugin 'load pyenv, if you are using it'
 
-export PYENV_ROOT="$HOME/.pyenv"
-export PATH="$PYENV_ROOT/bin:$PATH"
+export PYENV_PATH=`which pyenv`
+export PATH="$PYENV_PATH:$PATH"
+
 [[ `which pyenv` ]] && eval "$(pyenv init -)"
 
 #Load pyenv virtualenv if the virtualenv plugin is installed.

themes/bobby/bobby.theme.bash

@@ -14,7 +14,7 @@ RVM_THEME_PROMPT_SUFFIX="|"
 
 function prompt_command() {
     #PS1="${bold_cyan}$(scm_char)${green}$(scm_prompt_info)${purple}$(ruby_version_prompt) ${yellow}\h ${reset_color}in ${green}\w ${reset_color}\n${green}→${reset_color} "
-    PS1="\n${yellow}$(ruby_version_prompt) ${purple}\h ${reset_color}in ${green}\w\n${bold_cyan}$(scm_char)${green}$(scm_prompt_info) ${green}→${reset_color} "
+    PS1="\n${yellow}$(virtualenv_prompt)$(ruby_version_prompt) ${purple}\h ${reset_color}in ${green}\w\n${bold_cyan}$(scm_char)${green}$(scm_prompt_info) ${green}→${reset_color} "
 }
 
 PROMPT_COMMAND=prompt_command;