These distros were copies of the Mac OS X installer disc modified to include additional components necessary to make the OS run on the non-Apple hardware.
After a while Dmitrik also known as Bronzovka had luck with creating a kernel that supported AMD systems; after a few months (10.7.3 V2 With AMD Support) and i Atkos L2 (10.7.2 Only Intel) were released.
Shortly after the release of Developer Preview 1, some unknown developers managed to install this version of OSX to their PC by using a modified version of the Chameleon Bootloader.
The method consists of deploying Mac OS X v10.7 image on a flash drive, and booting from it via XPC UEFI Bootloader (See DUET below).
After some changes were made to the Chameleon source code, booting of Lion was possible with an updated version of Chameleon.
This version was released via the main project starting at version r1997 Since the retail release of Mountain Lion several users have reported successful setups using installers purchased from the Mac App Store, along with updated versions of Chameleon and other tools including distros.