From 358b6ffcde9e3732ed08387fc176851e07c1862f Mon Sep 17 00:00:00 2001
From: Brian McKenna <brian@simpleenergy.com>
Date: Tue, 18 Feb 2014 14:37:59 -0700
Subject: [PATCH] Add cabal_sandbox_info function

Reports whether the current working directory is within a
sandbox. Useful to check before installing Cabal packages into the
global registry.
---
 plugins/cabal/cabal.plugin.zsh | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/plugins/cabal/cabal.plugin.zsh b/plugins/cabal/cabal.plugin.zsh
index 8d3c64587..9f76add7a 100644
--- a/plugins/cabal/cabal.plugin.zsh
+++ b/plugins/cabal/cabal.plugin.zsh
@@ -1,3 +1,14 @@
+function cabal_sandbox_info() {
+    cabal_files=(*.cabal(N))
+    if [ $#cabal_files -gt 0 ]; then
+        if [ -f cabal.sandbox.config ]; then
+            echo "%{$fg[green]%}sandboxed%{$reset_color%}"
+        else
+            echo "%{$fg[red]%}not sandboxed%{$reset_color%}"
+        fi
+    fi
+}
+
 function _cabal_commands() {
     local ret=1 state
     _arguments ':subcommand:->subcommand' && ret=0