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-rw-r--r--Library/Homebrew/extend/os/mac/diagnostic.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/Library/Homebrew/extend/os/mac/diagnostic.rb b/Library/Homebrew/extend/os/mac/diagnostic.rb
index 0cdd7b115..ab5433565 100644
--- a/Library/Homebrew/extend/os/mac/diagnostic.rb
+++ b/Library/Homebrew/extend/os/mac/diagnostic.rb
@@ -197,6 +197,7 @@ module Homebrew
def check_ruby_version
ruby_version = "2.0"
return if RUBY_VERSION[/\d\.\d/] == ruby_version
+ return if ARGV.homebrew_developer? && OS::Mac.prerelease?
<<-EOS.undent
Ruby version #{RUBY_VERSION} is unsupported on #{MacOS.version}. Homebrew