[TUHS] Any UNIX With No C In Userland?

[Bakul Shah via TUHS]

On Feb 28, 2025, at 4:16 PM, segaloco via TUHS <tuhs at tuhs.org> wrote:
> 
> Given that anything that obeys the ABI and has assembler entries to the kernel
> can request services, it seems to me it would be possible to stand up a
> user-land without C being present.  Have any UNIXen ever done this after the
> advent of C?

vinix is written in the V language and can have userland written in V as
well but so far the compiler compiles to c (so requires a c compiler) so
not sure it qualifies + its development seems to have stalled somewhat.

IIRC there is at least one v6 level (toy?) OS written in rust with a
rust only userland. May be for anything non-toy you'd have to provide
a C compatible API.

Personally I don't see much point in reimplementing a 50+ year old OS in
a new language; at least do something new and innovative (with unix
emulation for dusty decks) but ¯\_(ツ)_/¯