NullBite's NixOS Config

This is my personal NixOS config. Right now, it's just a basic flake which imports a (mostly) normal stock NixOS configuration. The plan is to have three separate levels of organization:

• Fragments: Configure one specific service/app/setting/etc., which has the potential to be used on more than one machine.
  • Settings that will only ever work on one machine (e.g., settings which include disk UUIDs, PCIe bus IDs, etc) should be placed in a host fragment instead.
• Roles: Define a "purpose" and import relevant fragments.
  • Roles aren't mutually exclusive; one system could pull in roles for, e.g., desktop environment, gaming, and server
  • This is inspired by the concept of roles in Ansible
• Hosts: Configuration for individual hosts (obviously).
  • Each host shall have a folder containing a configuration.nix and a hardware-configuration.nix, and possibly a few host-specific fragments.
  • Custom configuration MUST NOT be placed in hardware-configuration.nix for the same reason one should not directly edit hardware-configuration.nix on a stock NixOS system. Most systems, however, generally will have some options exclusive to them, and these should be placed in the host's configuration.nix or a host fragment.

At first I am going to migrate configuration into roles, and then as the configuration evolves, I will start to create fragments.

The above is outdated and I will rewrite it once I settle on a better way to organize this repo.

flake.nix schema

flake.nix shall contain a "default" configuration for each host (using the built-in selection of nixos-rebuild), as well as alternative config presets for the host, if applicable.

TODO

• Reorganize repo to use a more "standard" module layout.
  • github:Misterio77/nix-config might be a good reference for a better module layout.
• Select entire desktop configuration via a single option and make bootable with specialisation.
  • Give each desktop a modularized configuration that can be enabled with an option.
  • figure out nixpkgs.lib.options.mkOption and add a string option that picks a desktop to use.
  • add Plasma, Hyprland, and maybe GNOME if I'm feeling silly (I'd probably never actually use it).
• make more things configurable as options once I figure out the above, it's probably cleaner than importing modules.
• Rewrite README.
• make system ephemeral/stateless
  • The following command is able to successfully show any accumulated state on my system:

    sudo find  / -xdev -path /home -o -path /nix -o -path /boot  -prune -o -name flatpak -o -name boot.bak -o -path /var/log -o -name .cache -prune -print -o -type f -print

  • everything on my system should be declared in this repository or explicitly excluded from the system state
  • caches should probably be excluded, they exist for a reason and are essentially harmless compared to other forms of state
    • /var/cache
    • ~/.cache
  • logs should also be excluded (/var/log)
  • network configuration (wireguard, networkmanager, bluetooth) should be excluded
  • ssh host keys
  • print configuration
  • tailscale keys
  • coredumps
  • /root user and /home
  • /etc/machine-id
• configure /etc/supergfxd.conf with a oneshot systemd unit on boot bsaed on selected specialisation (should still be modifiable with supergfxctl but should be ephemeral)