[Mohave] brew install protobufに失敗

以下の2つのエラーでhomebrewでprotobufをインストールできなかった。
あんまり社内でも話題になってないから、Mohaveで新規に入れようとした時に問題になる？

Error: Calling needs :cxx11 is disabled! There is no replacement.
Please report this to the homebrew/core tap:
  /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/protobuf.rb:38

Error: Calling 'fails_with :clang' with 'build' < 600 is disabled! There is no replacement.
Please report this to the homebrew/core tap:
  /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/python.rb:60

（というか1つ目をコメントアウトしたら2つ目が出てきた。）

/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/ 配下にあるファイルを以下の通り編集。

diff --git a/Formula/protobuf.rb b/Formula/protobuf.rb
index 6ccb4552..f2ed1515 100644
--- a/Formula/protobuf.rb
+++ b/Formula/protobuf.rb
@@ -32,7 +32,7 @@ class Protobuf < Formula
     sha256 "70e8a77beed4562e7f14fe23a786b54f6296e34344c23bc42f07b15018ff98e9"
   end

-  needs :cxx11
+  #needs :cxx11

   # Upstream PR from 3 Jul 2018 "Add Python 3.7 compatibility"
   patch do
diff --git a/Formula/python.rb b/Formula/python.rb
index 9dbcf52e..f3b7dfd9 100644
--- a/Formula/python.rb
+++ b/Formula/python.rb
@@ -51,10 +51,10 @@ class Python < Formula
     sha256 "0a2e54558a0628f2145d2fc822137e322412115173e8a2ddbe1c9024338ae83c"
   end

-  fails_with :clang do
-    build 425
-    cause "https://bugs.python.org/issue24844"
-  end
+  #fails_with :clang do
+  #  build 425
+  #  cause "https://bugs.python.org/issue24844"
+  #end

   # Homebrew's tcl-tk is built in a standard unix fashion (due to link errors)
   # so we have to stop python from searching for frameworks and linking against

これでとりあえず、 brew install protobuf 成功..
これで良かったのかな。