install everything with a nix flake

[vielmetti]

nixify the bootstrapping process here too, so that
the first thing you install is a nix flake (here would
be "flake.nix") that in turn hauls in everything else.

https://www.bekk.christmas/post/2021/16/dotfiles-with-nix-and-home-manager
has what looks like a sane approach to everything.

and once it's a flake it can be installed at system
build time so that it's ready at first login.

[vielmetti]

trying to refactor this with 5001633 - that at least
tries to handle the home manager side of the problem.

[vielmetti]

well, the first round of instructions were out of date, but
https://www.chrisportela.com/posts/home-manager-flake/
continues the theme with some updates. Don't quite have
it running yet but I'm closer.

[vielmetti]

A working flake in 75cd957 based on the work of Chris Portola above.

[vielmetti]

nix run . switch -- --flake . to do the install; then exec $(which zsh) and then source dot-p10k-zsh.

works, so save it.

[vielmetti]

you have to do the exec and source dance to get zsh running whenever you log in; #3 is that issue.

otherwise this is done enough.