dotfiles.nix/nixos/viridian/configuration.nix

# This is your system's configuration file.
# Use this to configure your system environment (it replaces /etc/nixos/configuration.nix)
{
  inputs,
  outputs,
  lib,
  config,
  pkgs,
  ...
}: {
  # You can import other NixOS modules here
  imports = [
    # If you want to use modules your own flake exports (from modules/nixos):
    # outputs.nixosModules.example

    # Or modules from other flakes (such as nixos-hardware):
    # inputs.hardware.nixosModules.common-cpu-amd
    # inputs.hardware.nixosModules.common-ssd

    # You can also split up your configuration and import pieces of it here:
    # ./users.nix

    # Import common configurations
    ../common/system-tools.nix

    # Import our docker containers
    ./containers

    # Import your generated (nixos-generate-config) hardware configuration
    ./hardware-configuration.nix
  ];

  nixpkgs = {
    # You can add overlays here
    overlays = [
      # Add overlays your own flake exports (from overlays and pkgs dir):
      outputs.overlays.additions
      outputs.overlays.modifications
      outputs.overlays.unstable-packages

      # You can also add overlays exported from other flakes:
      # neovim-nightly-overlay.overlays.default

      # Or define it inline, for example:
      # (final: prev: {
      #   hi = final.hello.overrideAttrs (oldAttrs: {
      #     patches = [ ./change-hello-to-hi.patch ];
      #   });
      # })
    ];
    # Configure your nixpkgs instance
    config = {
      # Disable if you don't want unfree packages
      allowUnfree = true;
    };
  };

  nix = {
    gc = {
      # Automatically run the garbage collector an a specified time.
      automatic = true;
      dates = "weekly";
      options = "--delete-older-than 30d";
    };

    # This will add each flake input as a registry
    # To make nix3 commands consistent with your flake
    registry = lib.mapAttrs (_: value: {flake = value;}) inputs;

    # This will additionally add your inputs to the system's legacy channels
    # Making legacy nix commands consistent as well, awesome!
    nixPath = lib.mapAttrsToList (key: value: "${key}=${value.to.path}") config.nix.registry;

    settings = {
      # Enable flakes and new 'nix' command
      experimental-features = "nix-command flakes";
      # Deduplicate and optimize nix store
      auto-optimise-store = true;
    };
  };

  networking = {
    hostName = "viridian";
    domain = "kanto.dev";
    networkmanager.enable = true;
    firewall = {
      enable = true;
      allowedTCPPorts = [
        53    # pihole-FTL  (DNS)
        80    # traefik     (HTTP)
        443   # traefik     (HTTPS)
        8096  # jellyfin
        32372 # qbittorrent
      ];
      allowedUDPPorts = [
        53    # pihole-FTL  (DNS)
        80    # traefik     (HTTP)
        443   # traefik     (HTTPS)
        8096  # jellyfin
        32372 # qbittorrent
      ];
    };
  };

  boot.loader = {
    systemd-boot.enable = true;
    efi = {
        canTouchEfiVariables = true;
        efiSysMountPoint = "/boot/efi";
    };
  };

  programs.zsh.enable = true;

  users.users = {
    admin = {
      isNormalUser = true;
      extraGroups = [ "networkmanager" "wheel" "docker" ];
      shell = pkgs.zsh;
      openssh.authorizedKeys.keyFiles = [ ../fuchsia/id_ed25519_sk.pub ];
    };
  };

  # This setups a SSH server. Very important if you're setting up a headless system.
  # Feel free to remove if you don't need it.
  services.openssh = {
    enable = true;
    # Forbid root login through SSH.
    settings.PermitRootLogin = "no";
    # Use keys only. Remove if you want to SSH using password (not recommended)
    settings.PasswordAuthentication = false;
  };

  # https://nixos.wiki/wiki/FAQ/When_do_I_update_stateVersion
  system.stateVersion = "23.05";
}