From 0fd0ecd599b443d39bd07ef66a8e072cceeab6f3 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Wed, 27 Jul 2016 22:10:34 -0600
Subject: [PATCH] os: don't assume Linux if testing generic OS.

---
 Library/Homebrew/os.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Library/Homebrew/os.rb b/Library/Homebrew/os.rb
index 4500fbd1e8..d7b4d88070 100644
--- a/Library/Homebrew/os.rb
+++ b/Library/Homebrew/os.rb
@@ -5,6 +5,7 @@ module OS
   end
 
   def self.linux?
+    return false if ENV["HOMEBREW_TEST_GENERIC_OS"]
     RUBY_PLATFORM.to_s.downcase.include? "linux"
   end