tratto da http://www.ros.org/reps/rep-0127.html

<package>
  <name>my_package</name>
  <version>1.2.3</version>
  <description>
    ROS communications-related packages, including core client
    libraries (roscpp, rospy, roslisp) and graph introspection tools
    (rostopic, rosnode, rosservice, rosparam).
  </description>
  <maintainer email="someone@example.com">Someone</maintainer>
 
  <license>BSD</license>
  <license>LGPL</license>
 
  <url type="website">http://wiki.ros.org/my_package</url>
  <url type="bugtracker">http://www.github.com/my_org/my_package/issues</url>
  <author>John Doe</author>
  <author email="jane.doe@example.com">Jane Doe</author>
 
  <buildtool_depend>catkin</buildtool_depend>
  <build_depend version_gte="1.1" version_lt="2.0">genmsg</build_depend>
 
  <build_depend>libgstreamer0.10-dev</build_depend>
  <run_depend>libgstreamer0.10-0</run_depend>
 
  <test_depend>gtest</test_depend>
 
  <conflict>my_old_package</conflict>
 
  <export>
    ...
  </export>
</package>