From 2ff86eb4175db91a918379736c414c122a9a1236 Mon Sep 17 00:00:00 2001
From: Jack Nagel <jacknagel@gmail.com>
Date: Fri, 26 Dec 2014 17:44:44 -0500
Subject: [PATCH] Decouple applying patches from staging the source

---
 Library/Homebrew/build.rb   |  2 ++
 Library/Homebrew/formula.rb | 13 ++++++++-----
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/Library/Homebrew/build.rb b/Library/Homebrew/build.rb
index 0a78f23267..65367db958 100644
--- a/Library/Homebrew/build.rb
+++ b/Library/Homebrew/build.rb
@@ -115,6 +115,8 @@ class Build
     end
 
     formula.brew do
+      formula.patch
+
       if ARGV.git?
         system "git", "init"
         system "git", "add", "-A"
diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index 55faf8778d..cc25c2482c 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -367,12 +367,18 @@ class Formula
     false
   end
 
+  def patch
+    ohai "Patching"
+    active_spec.patches.each(&:apply)
+  end
+
   # yields self with current working directory set to the uncompressed tarball
   # @private
   def brew
     stage do
+      prepare_patches
+
       begin
-        patch
         yield self
       ensure
         cp Dir["config.log", "CMakeCache.txt"], HOMEBREW_LOGS+name
@@ -723,7 +729,7 @@ class Formula
     end
   end
 
-  def patch
+  def prepare_patches
     active_spec.add_legacy_patches(patches)
     return if patchlist.empty?
 
@@ -732,9 +738,6 @@ class Formula
     active_spec.patches.select(&:external?).each do |patch|
       patch.verify_download_integrity(patch.fetch)
     end
-
-    ohai "Patching"
-    active_spec.patches.each(&:apply)
   end
 
   def self.method_added method