From reading the comments it seems this effort is more on the nostalgic sentiment for reliving the IRIX desktop.
I'm more interested on reliving the CEDAR/Tioga interactive desktop environment pioneered by the Xerox R&D team back in 1980s/1990s for their in-house productivity tools [1]. The system still have some productivity enabling features that are still not widely used as of now. Xerox also managed to port the system to SunOS at the time.
Anyone aware of any effort or clone that can enable CEDAR/Tioga to run on or emulated Linux?