we can conditionally compile or depends according to FEATURES currently, for example: DEPENDS = "${@base_contains('DISTRO_FEATURES', 'directfb', 'directfb', '', d)} \ ${@base_contains('DISTRO_FEATURES', 'opengl', 'virtual/libgl', '', d)} \ but we can't according to PACKAGES, which is easier and straighter to use. I think that if we can predict the pkg that would be built and save it to a variable like ALL_PACKAGES, then we can use it as: ${@base_contains('ALL_PACKAGES', 'directfb', 'directfb', '', d)}
This model does not really fit well within the system and the idea of deterministic builds. I think requiring the user to make a selection of DISTRO_FEATURES which remain consistent for a given build directory is going to be easier for the user to understand what is going on rather than things happening near enough randomly depending on what order packages were built for example.