From 4ce19ae2d727fd9b8ff8490c07bc45e2a191f514 Mon Sep 17 00:00:00 2001
From: Max Howell <max@methylblue.com>
Date: Wed, 9 Dec 2009 15:15:19 +0000
Subject: [PATCH] Better error message if exec fails

---
 Library/Homebrew/formula.rb | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index d11aeefd37..8c4614a3dd 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -322,7 +322,10 @@ protected
         raise
       end
     end
-  rescue
+  rescue SystemCallError
+    # usually because exec could not be find the command that was requested
+    raise
+  rescue 
     raise BuildError.new(cmd, args, $?)
   end