See http://www.python.org/download/releases/2.5/.
See http://allen.brooker.gb.net/misc/kitten-0day.jpg
Sorry, I'm a little anxious. Ternary operators! str.partition()!
pity there was no additional information about python 2.5 ebuild like whether the one in my overlay worked etc. added python 2.5 from my overlay as a hard masked.