From 155960d991a8f12b1176a55f0da8de1cb6f1ee24 Mon Sep 17 00:00:00 2001
From: Vlad Shablinsky <vladshablinsky@gmail.com>
Date: Sun, 1 May 2016 00:17:45 +0300
Subject: [PATCH] download_strategy: mercurial source_modified_time

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

diff --git a/Library/Homebrew/download_strategy.rb b/Library/Homebrew/download_strategy.rb
index ef750cd22e..71f47a2277 100644
--- a/Library/Homebrew/download_strategy.rb
+++ b/Library/Homebrew/download_strategy.rb
@@ -765,6 +765,10 @@ class MercurialDownloadStrategy < VCSDownloadStrategy
     end
   end
 
+  def source_modified_time
+    Time.parse Utils.popen_read("hg", "tip", "--template", "{date|isodate}", "-R", cached_location.to_s)
+  end
+
   private
 
   def cache_tag