This set of pending changes (https://github.com/ament/ament_package/pull/63) might be interesting for you. With those it should be possible to build your rmw impl. before rmw_implementation without the need to touch existing packages.
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This set of pending changes (https://github.com/ament/ament_package/pull/63) might be interesting for you. With those it should be possible to build your rmw impl. before rmw_implementation without the need to touch existing packages.