To add some meat onto that: a package should be usable (and reusable) on its own. If you have a package that is a single function or struct, it is unlikely (but

To add some meat onto that: a package should be usable (and reusable) on its own. If you have a package that is a single function or struct, it is unlikely (but still possible!) to be useful on its own and likely requires the context of your other packages to be useful.