Gentoo For Mac OS X
Gentoo for Mac OS X was the first non-Linux project of Gentoo and focused on making the Gentoo experience available on Apple's operating system by introducing the Portage system as a separate entity. This was roughly similar to Fink and MacPorts, but it used Portage instead of a Debian-like or Ports-like system. Later on, Gentoo for Mac OS X was made a subproject of Gentoo/Alt. Currently, the project is no longer active, because its prime assumption of using and not modifying the host OS appeared not to be realistic and eventually broke most packages or made them hardly maintainable. Gentoo for Mac OS X has been superseded by Gentoo Prefix, which is currently what Gentoo offers to Mac OS X users.
Read more about this topic: Gentoo/Alt