require 'formula' class CpioDownloadStrategy < CurlDownloadStrategy def stage system "gzcat #{@tarball_path} | cpio -id" chdir end end class Mksh < Formula homepage 'https://www.mirbsd.org/mksh.htm' url 'https://www.mirbsd.org/MirOS/dist/mir/mksh/mksh-R40d.cpio.gz', :using => CpioDownloadStrategy version '0.40d' sha1 '74450a1107664797e5fdbdeb444f18f82f0686ac' def install system 'sh ./Build.sh -combine' bin.install 'mksh' man1.install 'mksh.1' end def caveats; <<-EOS.undent To allow using mksh as a login shell, run this as root: echo #{HOMEBREW_PREFIX}/bin/mksh >> /etc/shells Then, any user may run `chsh` to change their shell. EOS end end