I am working with a BSP that has multiple image recipes.

foo-hwbringup-image.bb
foo-qt5demo-image.bb

foo-qt5demo-image.bb contains "require foo-hwbringup-image.bb"

However if I create foo-hwbringup-image.bbappend, it gets ignored.

What are the rules with appending included recipes?

bbappends do not append arbitrary files, only recipes (and in this case, the inclusion treats them as an arbitrary file). They do not apply to anything included or required, only the recipe itself. So you'll need to bbappend every recipe that includes foo-hwbringup-image.bb in this case.

This is unfortunate since foo-hwbringup-image.bb is also a valid recipe. It just doesn't contain the graphics support.

Is there a better way to add your custom components to "core-image" I guess…..