old_contents: from spack import *
  
  class Tmux(Package):
      """tmux is a terminal multiplexer. What is a terminal multiplexer? It lets
         you switch easily between several programs in one terminal, detach them (they
         keep running in the background) and reattach them to a different terminal. And
         do a lot more.
      """
  
      homepage = "http://tmux.sourceforge.net"
      url      = "http://downloads.sourceforge.net/project/tmux/tmux/tmux-1.9/tmux-1.9a.tar.gz"
  
      version('1.9a', 'b07601711f96f1d260b390513b509a2d')
  
      depends_on('libevent')
      depends_on('ncurses')
  
      def install(self, spec, prefix):
          configure(
              "--prefix=%s" % prefix,
              "PKG_CONFIG_PATH=%s:%s" % (spec['libevent'].prefix, spec['ncurses'].prefix))
  
          make()
          make("install")
  
new_contents: from spack import *
  
  class Tmux(Package):
      """tmux is a terminal multiplexer. What is a terminal multiplexer? It lets
         you switch easily between several programs in one terminal, detach them (they
         keep running in the background) and reattach them to a different terminal. And
         do a lot more.
      """
  
      homepage = "http://tmux.github.io"
      url = "https://github.com/tmux/tmux/releases/download/2.1/tmux-2.1.tar.gz"
  
      version('1.9a', 'b07601711f96f1d260b390513b509a2d')
      version('2.1', '74a2855695bccb51b6e301383ad4818c')
  
      depends_on('libevent')
      depends_on('ncurses')
  
      def install(self, spec, prefix):
          configure(
              "--prefix=%s" % prefix,
              "PKG_CONFIG_PATH=%s:%s" % (spec['libevent'].prefix, spec['ncurses'].prefix))
  
          make()
          make("install")
  
subject: Update tmux