pkg:setup
ENV.prepend_path "PATH", Formula["gnu-sed"].libexec/"gnubin"
ENV.prepend_create_path "PERL5LIB", libexec/"lib/perl5"
resource("Crypt::OpenSSL::Bignum").stage do
perl Makefile.PL INSTALL_BASE=#{libexec}
make DESTDIR=${PKG_DEST} install