From a9c988772b70d2aae6a52709b36d05164c9e0205 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Mon, 2 Nov 2020 12:09:25 +0000
Subject: [PATCH] diy: downcase names.

Fixes #9026
---
 Library/Homebrew/dev-cmd/diy.rb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Library/Homebrew/dev-cmd/diy.rb b/Library/Homebrew/dev-cmd/diy.rb
index 6018ae1e65..31f57440c8 100644
--- a/Library/Homebrew/dev-cmd/diy.rb
+++ b/Library/Homebrew/dev-cmd/diy.rb
@@ -56,6 +56,8 @@ module Homebrew
   def detect_name(path, version)
     basename = path.basename.to_s
     detected_name = basename[/(.*?)-?#{Regexp.escape(version)}/, 1] || basename
+    detected_name.downcase!
+
     canonical_name = Formulary.canonical_name(detected_name)
 
     odie <<~EOS if detected_name != canonical_name