From f2d823445ec979dd911ce936b4bb96258844057c Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Wed, 18 Jul 2018 14:09:43 +0100
Subject: [PATCH] ruby.sh: remove linkage cache on upgrade.

This may not be compatible between portable ruby versions and between
portable and system ruby versions.

Fixes #4485.
---
 Library/Homebrew/utils/ruby.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Library/Homebrew/utils/ruby.sh b/Library/Homebrew/utils/ruby.sh
index 6bee43498e..9711b3fbe4 100644
--- a/Library/Homebrew/utils/ruby.sh
+++ b/Library/Homebrew/utils/ruby.sh
@@ -47,7 +47,7 @@ setup-ruby-path() {
         then
           odie "Failed to install vendor Ruby."
         fi
-        rm -rf "$vendor_dir/bundle/ruby"
+        rm -rf "$vendor_dir/bundle/ruby" "$HOMEBREW_CACHE/linkage.db"
         HOMEBREW_RUBY_PATH="$vendor_ruby_path"
       fi
     fi