require 'formula' class Emacs23Installed < Requirement fatal true env :userpaths satisfy do `emacs --version 2>/dev/null` =~ /^GNU Emacs (\d{2})/ $1.to_i >= 23 end def message; <<-EOS.undent Emacs 23 or greater is required to build this software. You can install this with Homebrew: brew install emacs Or you can use any other Emacs distribution that provides version 23 or greater. EOS end end class Mu < Formula homepage 'http://www.djcbsoftware.nl/code/mu/' url 'http://mu0.googlecode.com/files/mu-0.9.9.tar.gz' sha1 'eafd678faf852230f55ae262ae005d006a9a839b' head 'https://github.com/djcb/mu.git' option 'with-emacs', 'Build with emacs support' depends_on 'gettext' depends_on 'glib' depends_on 'gmime' depends_on 'xapian' depends_on Emacs23Installed if build.include? 'with-emacs' if build.head? depends_on 'automake' => :build depends_on 'libtool' => :build end def install # Explicitly tell the build not to include emacs support as the version # shipped by default with Mac OS X is too old. ENV['EMACS'] = 'no' unless build.include? 'with-emacs' system 'autoreconf', '-ivf' if build.head? system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}", "--with-gui=none" system "make" system "make install" end def caveats; <<-EOS.undent Existing mu users are recommended to run the following after upgrading: mu index --rebuild EOS end end