Plan9 in fact uses file descriptors all over the place, including accessing synthetic or real filesystems (which are really namespaces). In fact the only "globa

Plan9 in fact uses file descriptors all over the place, including accessing synthetic or real filesystems (which are really namespaces). In fact the only "globals" are the #<dev> devices. IMHO you're better off starting with plan9 concepts + pure capabilities (KeyKOS as opposed to Capsicum). It would not enough to have a clean architecture unless a) it matches or improves upon performance and b) there is a way to run existing Unix software via some adapter layer or library or monitor. I suspect if you try to "reform" unix, there will be a lot of recidivism :-)