NixOS Client instructions

[tomberek]

Would be nice to have a place to distribute known issues and instructions specific to NixOS. Not sure when I will try a NixOS client, hopefully someone already has done this.

[paradigm]

Agreed! I'd also like to get GoboLinux listed out as well.

Most distros use a fairly standard $PATH. NixOS, however, does some extra
things with the $PATH; I expect due to these things it won't "just work" in
Bedrock Linux without a bit of additional configuration. Whatever that bit is,
it really should show up on the webpage.