travis: fix MacOS references.

Needed after Homebrew/brew#16306.
Homebrew · Dec 14, 2023 · dc019d9 · dc019d9
1 parent 2658c07
commit dc019d9
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/Formula/t/travis.rb b/Formula/t/travis.rb
@@ -184,7 +184,7 @@ class Travis < Formula
   def install
     ENV["GEM_HOME"] = libexec
     # gem issue on Mojave
-    ENV["SDKROOT"] = MacOS.sdk_path if MacOS.version == :mojave
+    ENV["SDKROOT"] = MacOS.sdk_path if OS.mac? && MacOS.version == :mojave
 
     resources.each do |r|
       r.fetch