Stage-packages on dump plugin are not included into the snap

Hi there!

This is something I’m noticing: if you put some deb packages on “stage-packages” of other plugins, like “python”, the packages are installed into the snap. But if I use the “dump” plugin, I need to “prime” every file inside the packages to make sure they will be on the final snap. Is dump plugin supposed to not “prime” the “stage-packages” content as other plugins do?

Thanks for your attention.