From a867e78f62c807b65ff4f80587d1a512252febf0 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Mon, 9 Nov 2020 15:23:35 +0000
Subject: [PATCH] uses_from_macos: fix force_homebrew_on_linux behaviour.

Otherwise the dependencies are read incorrectly on Linux when we're
trying to analyse Homebrew.
---
 Library/Homebrew/extend/os/mac/software_spec.rb | 2 ++
 Library/Homebrew/extend/os/software_spec.rb     | 7 ++++---
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/Library/Homebrew/extend/os/mac/software_spec.rb b/Library/Homebrew/extend/os/mac/software_spec.rb
index 221c0c4ca6..c15aa85ee7 100644
--- a/Library/Homebrew/extend/os/mac/software_spec.rb
+++ b/Library/Homebrew/extend/os/mac/software_spec.rb
@@ -1,6 +1,8 @@
 # typed: false
 # frozen_string_literal: true
 
+# The Library/Homebrew/extend/os/software_spec.rb conditional logic will need to be more nuanced
+# if this file ever includes more than `uses_from_macos`.
 class SoftwareSpec
   undef uses_from_macos
 
diff --git a/Library/Homebrew/extend/os/software_spec.rb b/Library/Homebrew/extend/os/software_spec.rb
index 15da2d0e5a..9f130f7150 100644
--- a/Library/Homebrew/extend/os/software_spec.rb
+++ b/Library/Homebrew/extend/os/software_spec.rb
@@ -1,8 +1,9 @@
 # typed: strict
 # frozen_string_literal: true
 
-if OS.linux?
-  require "extend/os/linux/software_spec"
-elsif OS.mac?
+# This logic will need to be more nuanced if this file includes more than `uses_from_macos`.
+if OS.mac? || Homebrew::EnvConfig.force_homebrew_on_linux?
   require "extend/os/mac/software_spec"
+elsif OS.linux?
+  require "extend/os/linux/software_spec"
 end