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-rw-r--r--Library/Homebrew/dependency_collector.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/Library/Homebrew/dependency_collector.rb b/Library/Homebrew/dependency_collector.rb
index a8e2609ac..e5734a79e 100644
--- a/Library/Homebrew/dependency_collector.rb
+++ b/Library/Homebrew/dependency_collector.rb
@@ -117,6 +117,8 @@ class DependencyCollector
when :emacs then EmacsRequirement.new(tags)
# Tiger's ld is too old to properly link some software
when :ld64 then LD64Dependency.new if MacOS.version < :leopard
+ # Tiger doesn't ship expat in /usr/lib
+ when :expat then Dependency.new("expat", tag) if MacOS.version < :leopard
when :python2
PythonRequirement.new(tags)
else