File gem2rpm.yml of Package rubygem-rack-2.2
--- :summary: A modular Ruby webserver interface :version_suffix: -2.2 :sources: - rubygem-rack-rpmlintrc :preamble: |- BuildRequires: fdupes :post_install: |- %fdupes %{buildroot}%{_libdir}/ruby/gems/*/gems/%{mod_name}-%{version}/