From a59bdc4a2a429bbe5fb812bd4ca98cd437a319be Mon Sep 17 00:00:00 2001
From: Vlad Shablinsky
Date: Fri, 22 Jul 2016 12:40:16 +0300
Subject: formula: don't return outdated head in installed_prefix

---
 Library/Homebrew/formula.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'Library')

diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index d0476ec26..d3a608718 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -449,8 +449,8 @@ class Formula
   # and then {#stable}'s {#prefix}
   # @private
   def installed_prefix
-    if head && (head_prefix = latest_head_prefix) && head_prefix.directory?
-      head_prefix
+    if head && (head_version = latest_head_version) && !head_version_outdated?(head_version)
+      latest_head_prefix
     elsif devel && (devel_prefix = prefix(PkgVersion.new(devel.version, revision))).directory?
       devel_prefix
     elsif stable && (stable_prefix = prefix(PkgVersion.new(stable.version, revision))).directory?
-- 
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