From b8373a737245e46867e08e02f0e76665b0e37c5a Mon Sep 17 00:00:00 2001
From: Arno Fortelny <aforty@users.noreply.github.com>
Date: Sun, 4 May 2014 08:34:44 -0400
Subject: [PATCH] check for existence of rvm-prompt before using it

---
 themes/half-life.zsh-theme | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/themes/half-life.zsh-theme b/themes/half-life.zsh-theme
index c8d09ce47..00ede587d 100644
--- a/themes/half-life.zsh-theme
+++ b/themes/half-life.zsh-theme
@@ -95,5 +95,9 @@ function steeef_precmd {
 }
 add-zsh-hook precmd steeef_precmd
 
+if [ command -v rvm-prompt >/dev/null 2>&1 ]; then
+  RVM=$(rvm-prompt " with%{$fg[red]%} " v g "%{$reset_color%}")
+fi
+
 PROMPT=$'
-%{$purple%}%n%{$reset_color%} in %{$limegreen%}%~%{$reset_color%}$(rvm-prompt " with%{$fg[red]%} " v g "%{$reset_color%}")$vcs_info_msg_0_%{$orange%} λ%{$reset_color%} '
+%{$purple%}%n%{$reset_color%} in %{$limegreen%}%~%{$reset_color%}$RVM$vcs_info_msg_0_%{$orange%} λ%{$reset_color%} '