The colcon plugin

The colcon plugin is useful when building ROS 2 parts that use colcon.

This plugin uses the common plugin keywords as well as those for “sources”. For more information, see Snapcraft parts metadata.

Additionally, this plugin uses the following plugin-specific keywords:

• colcon-packages (list of strings)
  List of colcon packages to build. If not specified, all packages in the
  workspace will be built. If set to an empty list ([]), no packages will
  be built, which could be useful if you only want ROS debs in the snap.
• colcon-source-space (string)
  The source space containing colcon packages (defaults to src).
• colcon-rosdistro (string)
  The ROS distro to use. Available options are bouncy and crystal (defaults to
  crystal), both of which are only compatible with core18 as the base.
• colcon-cmake-args (list of strings)
  Arguments to pass to cmake projects. Note that any arguments here which match
  colcon arguments need to be prefixed with a space. This can be done by quoting
  each argument with a leading space.
• colcon-catkin-cmake-args (list of strings)
  Arguments to pass to catkin packages. Note that any arguments here which match
  colcon arguments need to be prefixed with a space. This can be done by quoting
  each argument with a leading space.
• colcon-ament-cmake-args (list of strings)
  Arguments to pass to ament_cmake packages. Note that any arguments here which
  match colcon arguments need to be prefixed with a space. This can be done by
  quoting each argument with a leading space.

See the catkin plugin for building ROS 1 parts.

For a simple example, see ROS 2 applications, or search GitHub for projects already using the plugin.