The problem I'm seeing is that what OS X has isn't a unified system, and what Apple promotes isn't want developers want to/can use. So you see time and effort going into tools like this that only last a few years. It results in more fracturing in the end.

In this popular diagram, https://upload.wikimedia.org/wikipedia/commons/7/77/Unix_his..., NeXTSTEP was originally forked in 1988, before Linux really had package management put together. Darwin is from 2001.

Is 14 years not enough time to establish a proprietor supported unified package management system?

My expectations may just be set too high.