[pjmlp]

Not all UNIXes have package management.

[patrickg_zill]

Which one doesn't? Solaris, Irix, SCO and everyone else I can think of does.

[pjmlp]

Embedded UNIX like OSes, mainframes with POSIX system?

Last time I used Solaris, around 2004, it had single application packages, like rpm before yum, meaning I had to manually track down the dependencies from Sun repositories.

[majewsky]

From the top of my head, CoreOS. (It's built with Gentoo tooling, but intentionally ships without emerge etc. because you're supposed to use it as a base for Docker.)