[*] Except for the original developer/porter, of course.
I'm curious, because I've tried Plan9 a couple of times now on the Pi. It boots fine, so I'm 90% sure I did everything right in terms of writing the image to the SD card, but neither keyboard nor mouse works (so I end up having to pull the power plug to shut it down). The screen looks fine (and piques my interest!). One of the windows on the screen shows USB errors - and everytime I plug or unplug a keyboard or mouse from the USB port, messages (i.e., more errors) show up in this window. I've also tried another keyboard, but no change in results.
I assume the problem is (are) the usual USB/power issues. But note that I am using the same power/keyboard/mouse combination that I've used all along - and which works fine with the usual Linux distros and also works fine with RISCOS, so I'm reasonably sure that it (the power/keyboard/mouse combo) is reasonably good (for use with the Pi). But there is something about Plan9 that just doesn't like it.
Note: Image was downloaded from the site yesterday - so should be current.
Any suggestions of things to try? Or, as I suspect, is it just not ready for anyone other than the developers?
And some folks need to stop being fanboys and see the forest behind the trees.
(One of the best lines I've seen on this board lately)