From 5b19563937bab44fb98648a8dabdb9dc930a0ac3 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Wed, 3 May 2017 08:26:30 +0100
Subject: [PATCH] utils: create GEM_HOME when installing Gems.

It may not exist before Gem installation which means that the resulting
installed gem will not be found in the PATH.
---
 Library/Homebrew/utils.rb | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Library/Homebrew/utils.rb b/Library/Homebrew/utils.rb
index 83b8ba3424..59415906d7 100644
--- a/Library/Homebrew/utils.rb
+++ b/Library/Homebrew/utils.rb
@@ -189,6 +189,9 @@ module Homebrew
     Gem.clear_paths
     Gem::Specification.reset
 
+    # Create GEM_HOME which may not exist yet so it exists when creating PATH.
+    FileUtils.mkdir_p Gem.bindir
+
     # Add Gem binary directory and (if missing) Ruby binary directory to PATH.
     path = PATH.new(ENV["PATH"])
     path.prepend(RUBY_BIN) if which("ruby") != RUBY_PATH