[SPITBALL] Jehanne as another kernel option / porting target

[raingloom]

http://jehanne.io/2021/01/06/gcc_on_jehanne.html

Should support more architectures than Hurd ;)

Anyways, just throwing this out there, as I - and I imagine every
other contributor - have some more pressing projects.

It probably wouldn't be able to run most packages and services without
some significant work but it could maybe still use Guix as a package
manager.

seL4 would be cool too.