Unless it's true that they lost it, I really see no reason why HPE doesn't just release the official IRIX source code. It cannot be worth much at this point.
Maybe there's 3rd party code which SGI/HPE licensed? That's apparently why we can't have Operas Presto.
This leak has been floating around for years, and it's not even close to everything (i.e. no GUI pieces)
As a long-time AIX admin I'd LOOOOOVE to see some of the AIX source.
I used to be connected to the community where stuff like this was passed around. But that was a long, long time ago.
Interesting that GitHub recognizes "Roff" as a language.
Is this real?
For me personally, IRIX 6.x had one of the most beautiful (and colourful) GUIs ever.
For the curious, there is a guide (1) on how to run IRIX 6.5.22 in MAME.
1. https://sgi.neocities.org