I installed ROS on OS X 10.6.4 and when i was going through the tutorial i faced a problem on installation of the turtle_teleop. 
The command output is shown below...Any help will be appreciated greatly!!

 :~ Tadele$ rosdep install turtle_teleop rxtools
Failed to find rosdep bluez for package turtle_teleop on OS:macports version:macports
Failed to find rosdep libbluetooth-dev for package turtle_teleop on OS:macports version:macports
Failed to find rosdep python-bluez for package turtle_teleop on OS:macports version:macports
Failed to find rosdep libx11-dev for package turtle_teleop on OS:macports version:macports
Failed to find rosdep flex for package turtle_teleop on OS:macports version:macports
Failed to find rosdep libusb for package turtle_teleop on OS:macports version:macports
Failed to find rosdep bison for package turtle_teleop on OS:macports version:macports
Failed to find rosdep joystick for package turtle_teleop on OS:macports version:macports
ERROR: ABORTING: Rosdeps [u'bluez', u'libbluetooth-dev', u'python-bluez', u'libx11-dev', u'flex', u'libusb', u'bison', u'joystick'] could not be resolved