From 487c4857a392247c50c037de2557ca47f308727d Mon Sep 17 00:00:00 2001
From: Maxim Belkin <maxim.belkin@gmail.com>
Date: Fri, 24 Jul 2020 10:52:19 +0000
Subject: [PATCH] formula.rb: add a no-op allowed_missing_libraries method

---
 Library/Homebrew/formula.rb | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index 6114a8896c..e65b08adc3 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -2760,6 +2760,11 @@ class Formula
     def ignore_missing_libraries(*)
       raise FormulaSpecificationError, "#{__method__} is available on Linux only"
     end
+
+    # @private
+    def allowed_missing_libraries
+      raise NotImplementedError, "#{__method__} is available on Linux only"
+    end
   end
 end