Obviously I can't speak for the developers, but as it says a full Linux userspace, I will try spell it out - the userspace consists basically of almost anything you can install in Debian.
So
* GNU tools (ls, tail, bash, gdb, etc.)
* OS infrastructure (Systemd, Xorg/Wayland, etc.; probably not Mesa/DRM though as he says he doesn't want to do drivers)
* Desktop environments (KDE, GNOME, etc.)
* ... random other packages like Nethack ...
Honestly the goal seems kind of insane, like Don Quixote trying to reach the unreachable star. But I guess it's good advertising for the consulting work, and of course research projects generate useful side benefits. And writing software in Haskell is fun, so they just might succeed :-)
* GNU tools (ls, tail, bash, gdb, etc.)
* OS infrastructure (Systemd, Xorg/Wayland, etc.; probably not Mesa/DRM though as he says he doesn't want to do drivers)
* Desktop environments (KDE, GNOME, etc.)
* ... random other packages like Nethack ...
Honestly the goal seems kind of insane, like Don Quixote trying to reach the unreachable star. But I guess it's good advertising for the consulting work, and of course research projects generate useful side benefits. And writing software in Haskell is fun, so they just might succeed :-)