Bug report

Required Info:

• Operating System:
  • Ubuntu 18.04, Dashing
• Installation type:
  • Binaries and source
• Version or commit hash:
  • Released binary and branch
• DDS implementation:
  • Fast-RTPS
• Client library (if applicable):
  • rclcpp

Steps to reproduce issue

• Create a nested CMakeLists.txt in the demos/composition package
• Move the talker_component logic into the nested CMakeLists.txt (be sure to include the registering macro)
• Build and install

Expected behavior

The talker component will be present in share/ament_index/resource_index/rclcpp_components/composition, or at least, an error at CMake configure time.

Actual behavior

The talker component is missing.