[jabl]

> CUPS is still great but mostly because it's initial implementation was so straightforward. It's existence today is mostly maintenance-mode with a priority for fixing Mac bugs, which is understandable but also occludes the possibility for future improvement or adding support for other platforms.

The CUPS lead author left Apple a couple of years ago, and CUPS development is now mostly focused on Linux under the auspices of the Openprinting organization. (I understand the CUPS lead author still has some side consulting gig in providing bug fixes to Apples version of CUPS.)