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-rw-r--r--ext/fiddle/fiddle.gemspec4
1 files changed, 3 insertions, 1 deletions
diff --git a/ext/fiddle/fiddle.gemspec b/ext/fiddle/fiddle.gemspec
index a9514399f0..c3e6d48b89 100644
--- a/ext/fiddle/fiddle.gemspec
+++ b/ext/fiddle/fiddle.gemspec
@@ -66,5 +66,7 @@ Gem::Specification.new do |spec|
spec.add_development_dependency "rake"
spec.add_development_dependency "rake-compiler"
- spec.metadata["msys2_mingw_dependencies"] = "libffi"
+ # ruby head for mingw uses sub!:
+ # https://github.com/MSP-Greg/ruby-loco/blob/master/patches/__operating_system.rb.patch
+ spec.metadata["msys2_mingw_dependencies"] = +"libffi"
end