From 902b4e1f3f493dad186724da782384124bcd3d6b Mon Sep 17 00:00:00 2001
From: Carlo Cabrera <30379873+carlocab@users.noreply.github.com>
Date: Fri, 4 Feb 2022 09:50:21 +0800
Subject: [PATCH] cask/dsl/caveats: add `:requires_rosetta`

Some casks will fail to install with a `Bad CPU type in executable`
error on Apple Silicon. See Homebrew/homebrew-cask#118638.

This error can be quite confusing, so let's add a way to help users know
that they need to install Rosetta to use or even install a cask.
---
 Library/Homebrew/cask/dsl/caveats.rb | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Library/Homebrew/cask/dsl/caveats.rb b/Library/Homebrew/cask/dsl/caveats.rb
index 7a0591c76d..0436481f09 100644
--- a/Library/Homebrew/cask/dsl/caveats.rb
+++ b/Library/Homebrew/cask/dsl/caveats.rb
@@ -127,6 +127,17 @@ module Cask
         end
       end
 
+      caveat :requires_rosetta do
+        next unless Hardware::CPU.arm?
+
+        <<~EOS
+          #{@cask} is built for Intel macOS and so requires Rosetta 2 to be installed.
+          You can install Rosetta 2 with:
+            softwareupdate --install-rosetta --agree-to-license
+          Note that it is very difficult to remove Rosetta 2 once it is installed.
+        EOS
+      end
+
       caveat :logout do
         <<~EOS
           You must log out and log back in for the installation of #{@cask} to take effect.