os/mac/xcode: revert an installed? guard removal.

Fixes #4084.
2018-04-17 12:04:53 +01:00 · 2018-04-17 12:04:53 +01:00 · 7166289ad7
commit 7166289ad7
parent 7b6fb39497
1 changed files with 3 additions and 1 deletions
--- a/Library/Homebrew/os/mac/xcode.rb
+++ b/Library/Homebrew/os/mac/xcode.rb
@ -280,7 +280,9 @@ module OS
      def detect_version
        # CLT isn't a distinct entity pre-4.3, and pkgutil doesn't exist
        # at all on Tiger, so just count it as installed if Xcode is installed
-        return MacOS::Xcode.version if MacOS::Xcode.version < "3.0"
+        if MacOS::Xcode.installed? && MacOS::Xcode.version < "3.0"
+          return MacOS::Xcode.version
+        end

        version = nil
        [MAVERICKS_PKG_ID, MAVERICKS_NEW_PKG_ID, STANDALONE_PKG_ID, FROM_XCODE_PKG_ID].each do |id|