Split repo to qenya/ansible-playbooks

For some reason this was enabled by default in 0.26.0 even though it
breaks existing configurations. ¯\_(ツ)_/¯
https://github.com/juanfont/headscale/pull/2438

.envrc

@@ -0,0 +1 @@
+use_nix

.gitignore

@@ -2,4 +2,3 @@
 # Ignore build outputs from performing a nix-build or `nix build` command
 result
 result-*
-

README.md

@@ -1,3 +1,33 @@
-# nixos-config
+# nixfiles
 
-My NixOS configuration files
+My NixOS configuration files.
+
+The canonical location for this repository is https://git.unspecified.systems/qenya/nixfiles. If you're viewing it elsewhere, it is a mirror and may not be up-to-date.
+
+## Machines
+
+### Managed
+* `kilgharrah`: Custom-built personal desktop; also currently running Jellyfin, Navidrome and Audiobookshelf servers (and an FTP server, for shits and giggles)
+* `tohru`: Dell Latitude 5300, personal laptop
+* `elucredassa`: Acer Aspire A315-53, old laptop with a broken keyboard that now sits in a corner being a backup server
+* `yevaud`: Oracle Cloud free AMD VM, hosts a Forgejo instance and WireGuard server for the other machines in the network
+* `orm`: Oracle Cloud free AMD VM, hosts an instance of Actual Budget and a PostgreSQL server for other services that need one
+* `kalessin`: Oracle Cloud free ARM VM, currently idling
+
+### Referenced only
+* `shaw`: [My girlfriend's NAS](https://github.com/randomnetcat/nix-configs/tree/main/hosts/shaw)
+* `latias`: My Steam Deck
+
+## Usage
+
+### Building
+
+To build locally, run `nixos-rebuild switch --flake .#[hostname]` as root.
+
+To build the remote machines, run `colmena apply`. See the [colmena documentation](https://colmena.cli.rs/) for command-line options. Notable options include:
+* `--on [hostname]`: build a specific machine only
+* `--reboot`: reboot after building (but note [this bug](https://github.com/zhaofengli/colmena/issues/166) means it may hang even when the reboot completes successfully)
+
+### Updating
+
+`nix flake update --commit-lock-file`

common/base-graphical/default.nix

@@ -0,0 +1,31 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+  cfg = config.qenya.base-graphical;
+in
+{
+  imports = [
+    ./gnome.nix
+    ./sound.nix
+  ];
+
+  options.qenya.base-graphical.enable = mkEnableOption "Base configuration for graphical environments";
+
+  config = mkIf cfg.enable {
+    services.xserver.enable = true;
+    services.libinput.enable = true;
+    services.printing.enable = true;
+    services.avahi = {
+      enable = true;
+      nssmdns4 = true;
+      openFirewall = true;
+    };
+
+    fonts.packages = with pkgs; [
+      corefonts
+      caladea
+      carlito
+    ];
+  };
+}

common/base-graphical/gnome.nix

@@ -0,0 +1,21 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) mkIf mkMerge mkOption types;
+  cfg = config.qenya.base-graphical;
+in
+{
+  config = mkIf cfg.enable {
+    services.displayManager.gdm.enable = true;
+    services.desktopManager.gnome.enable = true;
+    # TODO: agree on this with randomcat as it affects her too, since for some reason this is system-wide
+    # environment.gnome.excludePackages = with pkgs.gnome; [
+    #   pkgs.gnome-tour
+    #   epiphany # GNOME Web
+    #   geary
+    #   gnome-calendar
+    #   gnome-contacts
+    #   gnome-music
+    # ];
+  };
+}

common/base-graphical/sound.nix

@@ -0,0 +1,20 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+  cfg = config.qenya.base-graphical;
+in
+{
+  config = mkIf cfg.enable {
+    security.rtkit.enable = true;
+    services.pipewire = {
+      enable = true;
+      alsa.enable = true;
+      alsa.support32Bit = true;
+      pulse.enable = true;
+      jack.enable = true;
+    };
+    services.pulseaudio.enable = false; # this theoretically defaults to false but something else seems to be flipping it
+    environment.systemPackages = with pkgs; [ helvum ]; # patchbay
+  };
+}

common/base-server/default.nix

@@ -0,0 +1,17 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+  cfg = config.qenya.base-server;
+in
+{
+  options.qenya.base-server.enable = mkEnableOption "Base configuration for headless servers";
+
+  config = mkIf cfg.enable {
+    time.timeZone = "Etc/UTC";
+
+    # Allow remote deployment with colmena
+    deployment.targetUser = null;
+    security.sudo.wheelNeedsPassword = false;
+  };
+}

common/boot.nix

@@ -0,0 +1,22 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) mkIf optionals;
+in
+{
+  boot.loader = {
+    systemd-boot.enable = true;
+    systemd-boot.editor = false;
+    systemd-boot.memtest86.enable = mkIf config.nixpkgs.hostPlatform.isx86 true;
+    efi.canTouchEfiVariables = true;
+  };
+
+  services.resolved = {
+    enable = true;
+    fallbackDns = [ ];
+    dnsovertls = "true";
+    extraConfig = ''
+      DNS=2a07:e340::4#base.dns.mullvad.net 194.242.2.4#base.dns.mullvad.net
+    '';
+  };
+}

common/default.nix

@@ -0,0 +1,21 @@
+{
+  imports = [
+    ./base-graphical
+    ./base-server
+    ./users
+
+    ./boot.nix
+    ./docker.nix
+    ./gpg.nix
+    ./home-manager.nix
+    ./misc.nix
+    ./nginx.nix
+    ./nix.nix
+    ./packages.nix
+    ./sanoid.nix
+    ./security.nix
+    ./ssh.nix
+    ./steam.nix
+    ./tailscale.nix
+  ];
+}

common/docker.nix

@@ -0,0 +1,11 @@
+{ config, lib, pkgs, ... }:
+
+{
+  virtualisation.docker.daemon.settings = {
+    userland-proxy = false;
+    experimental = true;
+    metrics-addr = "0.0.0.0:9323";
+    ipv6 = true;
+    fixed-cidr-v6 = "fd00::/80";
+  };
+}

common/gpg.nix

@@ -0,0 +1,8 @@
+{ config, lib, pkgs, ... }:
+
+{
+  programs.gnupg.agent = {
+    enable = true;
+    enableSSHSupport = true;
+  };
+}

common/home-manager.nix

@@ -0,0 +1,12 @@
+{ config, lib, pkgs, inputs, ... }:
+
+{
+  home-manager = {
+    useUserPackages = true;
+    useGlobalPkgs = true;
+    backupFileExtension = "backup";
+    extraSpecialArgs = {
+      inherit inputs;
+    };
+  };
+}

common/misc.nix

@@ -0,0 +1,12 @@
+{ config, lib, pkgs, ... }:
+
+{
+  nix.gc = {
+    automatic = true;
+    dates = "weekly";
+    randomizedDelaySec = "45min";
+    options = "--delete-older-than 30d";
+  };
+  nix.optimise.automatic = true;
+  services.fstrim.enable = true;
+}

common/nginx.nix

@@ -0,0 +1,25 @@
+{ config, lib, pkgs, ... }:
+
+{
+  services.nginx = {
+    recommendedGzipSettings = true;
+    recommendedOptimisation = true;
+    recommendedProxySettings = true;
+    recommendedTlsSettings = true;
+
+    appendHttpConfig = ''
+      add_header Strict-Transport-Security "max-age=31536000; includeSubdomains; preload" always;
+      add_header Content-Security-Policy "default-src https: data: blob: ws: 'unsafe-inline' 'wasm-unsafe-eval'; object-src 'none'; base-uri 'self';" always;
+      add_header Referrer-Policy strict-origin-when-cross-origin;
+      add_header X-Frame-Options SAMEORIGIN;
+      add_header X-Content-Type-Options nosniff;
+      add_header X-Clacks-Overhead "GNU Terry Pratchett" always;
+      proxy_cookie_path / "/; secure; HttpOnly; SameSite=strict";
+    '';
+  };
+
+  security.acme = {
+    acceptTerms = true;
+    defaults.email = "auto@qenya.tel";
+  };
+}

common/nix.nix

@@ -0,0 +1,24 @@
+{ config, lib, pkgs, ... }:
+
+{
+  nix.settings.experimental-features = "nix-command flakes";
+  nixpkgs.flake = {
+    source = lib.cleanSource pkgs.path;
+    setNixPath = true;
+    setFlakeRegistry = true;
+  };
+  nixpkgs.config.allowUnfree = true;
+  nix.settings.trusted-users = [ "@wheel" ];
+
+  nix.package = pkgs.lixPackageSets.stable.lix;
+  nixpkgs.overlays = [
+    (final: prev: {
+      inherit (final.lixPackageSets.stable)
+        nixpkgs-review
+        nix-direnv
+        nix-eval-jobs
+        nix-fast-build
+        colmena;
+    })
+  ];
+}

common/packages.nix

@@ -0,0 +1,23 @@
+{ config, lib, pkgs, ... }:
+
+{
+  environment.systemPackages = with pkgs; [
+    btop
+    git
+    wget
+
+    # hardware troubleshooting
+    lshw
+    parted
+    smartmontools
+
+    # network troubleshooting
+    inetutils
+    lsof
+    tcpdump
+    netcat # <3
+    wireguard-tools
+  ];
+
+  environment.wordlist.enable = true;
+}

common/sanoid.nix

@@ -0,0 +1,35 @@
+{ config, pkgs, inputs, ... }:
+
+{
+  config = {
+    services.sanoid = {
+      enable = true;
+      extraArgs = [ "--verbose" ];
+
+      # Local snapshots for important datasets
+      templates."production" = {
+        yearly = 0;
+        monthly = 3;
+        daily = 30;
+        hourly = 36;
+        autosnap = true;
+        autoprune = true;
+      };
+
+      # Reduced-retention version for datasets that are backed up to the NAS
+      templates."safe" = {
+        yearly = 0;
+        monthly = 0;
+        daily = 7;
+        hourly = 24;
+        autosnap = true;
+        autoprune = true;
+      };
+
+      # datasets."rpool_sggau1/reese/system" = {
+      #   useTemplate = [ "safe" ];
+      #   recursive = "zfs";
+      # };
+    };
+  };
+}

common/security.nix

@@ -0,0 +1,5 @@
+{ config, lib, pkgs,... }:
+
+{
+  security.sudo.execWheelOnly = true;
+}

common/ssh.nix

@@ -0,0 +1,21 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) concatMapAttrs;
+  keys = import ../keys.nix;
+in
+{
+  services.openssh = {
+    enable = true;
+    settings = {
+      PasswordAuthentication = false;
+      PermitRootLogin = "no";
+    };
+  };
+
+  programs.ssh.knownHosts = concatMapAttrs
+    (host: key: {
+      "${host}.birdsong.network".publicKey = key;
+    })
+    keys.machines;
+}

common/steam.nix

@@ -0,0 +1,16 @@
+{ config, lib, pkgs, ... }:
+
+{
+  config = lib.mkIf config.programs.steam.enable {
+    programs.steam = {
+      remotePlay.openFirewall = true;
+      dedicatedServer.openFirewall = true;
+      localNetworkGameTransfers.openFirewall = true;
+      gamescopeSession.enable = true;
+      extest.enable = true;
+      protontricks.enable = true;
+    };
+
+    services.joycond.enable = true;
+  };
+}

common/tailscale.nix

@@ -0,0 +1,23 @@
+{ config, lib, pkgs, ... }:
+
+{
+  services.tailscale = {
+    enable = true;
+    openFirewall = true;
+    extraUpFlags = [ "--login-server" "https://headscale.unspecified.systems" ];
+    extraDaemonFlags = [ "--no-logs-no-support" ]; # disable telemetry
+  };
+
+  systemd.services.tailscaled-autoconnect = {
+    after = [ "tailscaled.service" "network-online.target" ];
+    wants = [ "tailscaled.service" "network-online.target" ];
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig.Type = "oneshot";
+    script = ''
+      sleep 2 # wait for tailscaled to settle
+      ${lib.getExe config.services.tailscale.package} up --reset ${lib.escapeShellArgs config.services.tailscale.extraUpFlags}
+    '';
+  };
+
+  networking.domain = "birdsong.network";
+}

common/users/default.nix

@@ -0,0 +1,32 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) mkIf mkOption types genAttrs;
+  cfg = config.fountain;
+in
+{
+  # TODO: consider DRY-ing these
+  imports = [
+    ./gaelan.nix
+    ./qenya.nix
+    ./randomcat.nix
+    ./trungle.nix
+  ];
+
+  options.fountain = {
+    admins = mkOption {
+      type = types.listOf types.str;
+      default = [ ];
+      description = "List of users who should have root on this system";
+    };
+  };
+
+  config = {
+    users.mutableUsers = false;
+
+    users.users = genAttrs cfg.admins
+      (name: {
+        extraGroups = [ "wheel" ];
+      });
+  };
+}

common/users/gaelan.nix

@@ -0,0 +1,23 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) mkIf mkEnableOption;
+  keys = import ../../keys.nix;
+  cfg = config.fountain.users.gaelan;
+in
+{
+  options.fountain.users.gaelan = {
+    enable = mkEnableOption "user gaelan";
+  };
+
+  config = mkIf cfg.enable {
+    users.users.gaelan = {
+      uid = 1003;
+      isNormalUser = true;
+      group = "gaelan";
+      openssh.authorizedKeys.keys = keys.users.gaelan;
+    };
+
+    users.groups.gaelan.gid = config.users.users.gaelan.uid;
+  };
+}

common/users/qenya.nix

@@ -0,0 +1,28 @@
+{ config, lib, pkgs, self, ... }:
+
+let
+  inherit (lib) mkIf mkEnableOption;
+  keys = import ../../keys.nix;
+  cfg = config.fountain.users.qenya;
+in
+{
+  options.fountain.users.qenya = {
+    enable = mkEnableOption "user qenya";
+  };
+
+  config = mkIf cfg.enable {
+    users.users.qenya = {
+      uid = 1001;
+      isNormalUser = true;
+      group = "qenya";
+      shell = pkgs.zsh;
+      openssh.authorizedKeys.keys = keys.users.qenya;
+    };
+
+    users.groups.qenya.gid = config.users.users.qenya.uid;
+
+    programs.zsh.enable = true;
+
+    home-manager.users."qenya" = self.homeManagerModules."qenya";
+  };
+}

common/users/randomcat.nix

@@ -0,0 +1,23 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) mkIf mkEnableOption;
+  keys = import ../../keys.nix;
+  cfg = config.fountain.users.randomcat;
+in
+{
+  options.fountain.users.randomcat = {
+    enable = mkEnableOption "user randomcat";
+  };
+
+  config = mkIf cfg.enable {
+    users.users.randomcat = {
+      uid = 1000;
+      isNormalUser = true;
+      group = "randomcat";
+      openssh.authorizedKeys.keys = keys.users.randomcat;
+    };
+
+    users.groups.randomcat.gid = config.users.users.randomcat.uid;
+  };
+}

common/users/trungle.nix

@@ -0,0 +1,23 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) mkIf mkEnableOption;
+  keys = import ../../keys.nix;
+  cfg = config.fountain.users.trungle;
+in
+{
+  options.fountain.users.trungle = {
+    enable = mkEnableOption "user trungle";
+  };
+
+  config = mkIf cfg.enable {
+    users.users.trungle = {
+      uid = 1002;
+      isNormalUser = true;
+      group = "trungle";
+      openssh.authorizedKeys.keys = keys.users.trungle;
+    };
+
+    users.groups.trungle.gid = config.users.users.trungle.uid;
+  };
+}

flake.lock

@@ -1,24 +1,294 @@
 {
   "nodes": {
+    "agenix": {
+      "inputs": {
+        "darwin": [],
+        "home-manager": [],
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1762618334,
+        "narHash": "sha256-wyT7Pl6tMFbFrs8Lk/TlEs81N6L+VSybPfiIgzU8lbQ=",
+        "owner": "ryantm",
+        "repo": "agenix",
+        "rev": "fcdea223397448d35d9b31f798479227e80183f6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "ryantm",
+        "repo": "agenix",
+        "type": "github"
+      }
+    },
+    "colmena": {
+      "inputs": {
+        "flake-compat": [],
+        "flake-utils": "flake-utils",
+        "nix-github-actions": [],
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "stable": []
+      },
+      "locked": {
+        "lastModified": 1762034856,
+        "narHash": "sha256-QVey3iP3UEoiFVXgypyjTvCrsIlA4ecx6Acaz5C8/PQ=",
+        "owner": "zhaofengli",
+        "repo": "colmena",
+        "rev": "349b035a5027f23d88eeb3bc41085d7ee29f18ed",
+        "type": "github"
+      },
+      "original": {
+        "owner": "zhaofengli",
+        "repo": "colmena",
+        "type": "github"
+      }
+    },
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1763759067,
+        "narHash": "sha256-LlLt2Jo/gMNYAwOgdRQBrsRoOz7BPRkzvNaI/fzXi2Q=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "2cccadc7357c0ba201788ae99c4dfa90728ef5e0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1659877975,
+        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "home-manager": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1764866045,
+        "narHash": "sha256-0GsEtXV9OquDQ1VclQfP16cU5VZh7NEVIOjSH4UaJuM=",
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "rev": "f63d0fe9d81d36e5fc95497217a72e02b8b7bcab",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "ref": "release-25.11",
+        "repo": "home-manager",
+        "type": "github"
+      }
+    },
+    "home-manager-unstable": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs-unstable"
+        ]
+      },
+      "locked": {
+        "lastModified": 1764952935,
+        "narHash": "sha256-cRPB2zESVMjIGxJ49qj4t4qnT0ae44E+fS/mkfOS/BY=",
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "rev": "519828bf1c97f8bc2ed2d3b79214067047d3c67d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1716361217,
+        "lastModified": 1764831616,
-        "narHash": "sha256-mzZDr00WUiUXVm1ujBVv6A0qRd8okaITyUp4ezYRgc4=",
+        "narHash": "sha256-OtzF5wBvO0jgW1WW1rQU9cMGx7zuvkF7CAVJ1ypzkxA=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "46397778ef1f73414b03ed553a3368f0e7e33c2f",
+        "rev": "c97c47f2bac4fa59e2cbdeba289686ae615f8ed4",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-23.11",
+        "ref": "nixos-25.11",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
+    "nixpkgs-lib": {
+      "locked": {
+        "lastModified": 1761765539,
+        "narHash": "sha256-b0yj6kfvO8ApcSE+QmA6mUfu8IYG6/uU28OFn4PaC8M=",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "rev": "719359f4562934ae99f5443f20aa06c2ffff91fc",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "type": "github"
+      }
+    },
+    "nixpkgs-small": {
+      "locked": {
+        "lastModified": 1764952718,
+        "narHash": "sha256-Gf75RCbeYcfXGNb9hHQ7DsVNsxU+TNWivose3JT53QY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d355f89e0014e51c9511298089d7ab55fd6f7056",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-25.11-small",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-unstable": {
+      "locked": {
+        "lastModified": 1764667669,
+        "narHash": "sha256-7WUCZfmqLAssbDqwg9cUDAXrSoXN79eEEq17qhTNM/Y=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "418468ac9527e799809c900eda37cbff999199b6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-unstable-small": {
+      "locked": {
+        "lastModified": 1764945329,
+        "narHash": "sha256-hHzryWFOvCnUfiQvsHEjVpAECIXB977Owi1Gno7YwYc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "21f4f13e179ba2b3d84d844b697612fa1b695b85",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable-small",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "plasma-manager": {
+      "inputs": {
+        "home-manager": [
+          "home-manager-unstable"
+        ],
+        "nixpkgs": [
+          "nixpkgs-unstable"
+        ]
+      },
+      "locked": {
+        "lastModified": 1763909441,
+        "narHash": "sha256-56LwV51TX/FhgX+5LCG6akQ5KrOWuKgcJa+eUsRMxsc=",
+        "owner": "nix-community",
+        "repo": "plasma-manager",
+        "rev": "b24ed4b272256dfc1cc2291f89a9821d5f9e14b4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "plasma-manager",
+        "type": "github"
+      }
+    },
+    "randomcat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1764900354,
+        "narHash": "sha256-/pWRIVfDkF26gaYGVc68Xo4WvDSXs+Chbr2iKcOESbc=",
+        "owner": "randomnetcat",
+        "repo": "nix-configs",
+        "rev": "03e246bb10c135386455af0e88899df2ca10495d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "randomnetcat",
+        "repo": "nix-configs",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
-        "nixpkgs": "nixpkgs"
+        "agenix": "agenix",
+        "colmena": "colmena",
+        "flake-parts": "flake-parts",
+        "home-manager": "home-manager",
+        "home-manager-unstable": "home-manager-unstable",
+        "nixpkgs": "nixpkgs",
+        "nixpkgs-small": "nixpkgs-small",
+        "nixpkgs-unstable": "nixpkgs-unstable",
+        "nixpkgs-unstable-small": "nixpkgs-unstable-small",
+        "plasma-manager": "plasma-manager",
+        "randomcat": "randomcat",
+        "scoutshonour": "scoutshonour"
+      }
+    },
+    "scoutshonour": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs-unstable"
+        ]
+      },
+      "locked": {
+        "lastModified": 1735301893,
+        "narHash": "sha256-d95MCTUYMCcOQv4LpmWxPuVnx7McezXYs2Idw8u8ngI=",
+        "ref": "main",
+        "rev": "f447cd380ea1fb81a0ff8f292b6bbdf0be9c9520",
+        "revCount": 23,
+        "type": "git",
+        "url": "https://git.qenya.tel/qenya/nix-scoutshonour"
+      },
+      "original": {
+        "ref": "main",
+        "type": "git",
+        "url": "https://git.qenya.tel/qenya/nix-scoutshonour"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
       }
     }
   },

flake.nix

@@ -1,14 +1,154 @@
 {
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.11";
-  };
+    nixpkgs-small.url = "github:NixOS/nixpkgs/nixos-25.11-small";
+    nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixos-unstable";
+    nixpkgs-unstable-small.url = "github:NixOS/nixpkgs/nixos-unstable-small";
 
-  outputs = { self, nixpkgs, ... }@inputs: {
+    home-manager = {
-    nixosConfigurations.tohru = nixpkgs.lib.nixosSystem {
+      url = "github:nix-community/home-manager/release-25.11";
-      system = "x86_64-linux";
+      inputs.nixpkgs.follows = "nixpkgs";
-      modules = [
+    };
-        ./hosts/tohru/configuration.nix
+
-      ];
+    home-manager-unstable = {
+      url = "github:nix-community/home-manager";
+      inputs.nixpkgs.follows = "nixpkgs-unstable";
+    };
+
+    plasma-manager = {
+      url = "github:nix-community/plasma-manager";
+      inputs.nixpkgs.follows = "nixpkgs-unstable";
+      inputs.home-manager.follows = "home-manager-unstable";
+    };
+
+    flake-parts.url = "github:hercules-ci/flake-parts";
+
+    agenix = {
+      url = "github:ryantm/agenix";
+      inputs.nixpkgs.follows = "nixpkgs";
+      inputs.darwin.follows = "";
+      inputs.home-manager.follows = "";
+    };
+
+    colmena = {
+      url = "github:zhaofengli/colmena";
+      inputs.nixpkgs.follows = "nixpkgs";
+      inputs.stable.follows = "";
+      inputs.nix-github-actions.follows = "";
+      inputs.flake-compat.follows = "";
+    };
+
+    randomcat = {
+      url = "github:randomnetcat/nix-configs";
+      flake = false;
+    };
+
+    scoutshonour = {
+      url = "git+https://git.qenya.tel/qenya/nix-scoutshonour?ref=main";
+      inputs.nixpkgs.follows = "nixpkgs-unstable";
     };
   };
+
+  outputs = inputs@{ self, nixpkgs, nixpkgs-small, nixpkgs-unstable, flake-parts, colmena, ... }:
+    flake-parts.lib.mkFlake { inherit inputs; } {
+      imports = [ ./flake ];
+
+      systems = [ "x86_64-linux" "aarch64-linux" ];
+
+      perSystem = { pkgs, system, ... }: {
+        devShells.default = pkgs.mkShell {
+          packages = [
+            # TODO: improve the way this override works
+            (inputs.colmena.packages.${system}.colmena.override {
+              nix-eval-jobs = pkgs.lixPackageSets.stable.nix-eval-jobs;
+            })
+            inputs.agenix.packages.${system}.default
+            inputs.plasma-manager.packages.${system}.rc2nix
+          ];
+        };
+      };
+
+      flake.nixosConfigurations = self.outputs.colmenaHive.nodes;
+      flake.colmenaHive = colmena.lib.makeHive self.outputs.colmena;
+
+      # The name of this output type is not standardised. I have picked
+      # "homeManagerModules" as the discussion here suggests it's the most common:
+      # https://github.com/nix-community/home-manager/issues/1783
+      #
+      # However, note CppNix >= 2.22.3, >= 2.24 has blessed "homeModules":
+      # https://github.com/NixOS/nix/pull/10858
+      flake.homeManagerModules = {
+        "qenya".imports = [ ./home/qenya ];
+        "qenya@shaw".imports = [ ./hosts/shaw/home.nix ];
+      };
+
+      fountain.backup = {
+        keys = {
+          elucredassa = [ "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOFa3hjej6KGmS2aQ4s46Y7U8pN4yyR2FuMofpHRwXNk syncoid@elucredassa" ];
+        };
+        sync = {
+          "orm-state" = {
+            dataset = "state";
+            sourceHost = "orm";
+            targetHost = "elucredassa";
+            source = "rpool_orm";
+            target = "rpool_elucredassa/backup/orm";
+          };
+          "kalessin-state" = {
+            dataset = "state";
+            sourceHost = "kalessin";
+            targetHost = "elucredassa";
+            source = "rpool_kalessin";
+            target = "rpool_elucredassa/backup/kalessin";
+          };
+        };
+      };
+
+      flake.colmena =
+        let
+          home-manager = inputs.home-manager.nixosModules.home-manager;
+          home-manager-unstable = inputs.home-manager-unstable.nixosModules.home-manager;
+        in
+        {
+          meta = {
+            nixpkgs = import nixpkgs-unstable { system = "x86_64-linux"; };
+            nodeNixpkgs = {
+              kilgharrah = import nixpkgs { system = "x86_64-linux"; };
+              tohru = import nixpkgs { system = "x86_64-linux"; };
+              elucredassa = import nixpkgs-small { system = "x86_64-linux"; };
+              yevaud = import nixpkgs-small { system = "x86_64-linux"; };
+              orm = import nixpkgs-small { system = "x86_64-linux"; };
+              kalessin = import nixpkgs-small { system = "aarch64-linux"; };
+              tehanu = import nixpkgs-small { system = "aarch64-linux"; };
+            };
+            specialArgs = {
+              inherit self;
+              inherit inputs;
+            };
+          };
+
+          defaults = { config, lib, pkgs, ... }: {
+            deployment.targetHost = lib.mkDefault config.networking.fqdn;
+            deployment.buildOnTarget = lib.mkDefault true;
+
+            imports = [
+              inputs.agenix.nixosModules.default
+              ./common
+              ./services
+            ];
+          };
+
+          kilgharrah.deployment.targetHost = null; # disable remote deployment
+          tohru.deployment.targetHost = null; # disable remote deployment
+          elucredassa.deployment.targetHost = "100.73.34.182"; # TODO: no fqdn yet
+
+          kilgharrah.imports = [ ./hosts/kilgharrah home-manager ];
+          tohru.imports = [ ./hosts/tohru home-manager ];
+          elucredassa.imports = [ ./hosts/elucredassa home-manager ];
+          yevaud.imports = [ ./hosts/yevaud home-manager ];
+          orm.imports = [ ./hosts/orm home-manager ];
+          kalessin.imports = [ ./hosts/kalessin home-manager ];
+          tehanu.imports = [ ./hosts/tehanu home-manager ];
+        };
+    };
 }

flake/backup.nix

@@ -0,0 +1,134 @@
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.fountain.backup;
+  keys = import ../keys.nix;
+
+  syncOptions = {
+    dataset = lib.mkOption {
+      type = lib.types.str;
+      description = ''
+        The name of the dataset to be synced (not including its parent
+        datasets, if any). This will be the same on the source and target.
+        It must already exist on the source, defined with the
+        {option}`randomcat.services.zfs` module, and not exist on the target.
+      '';
+    };
+    sourceHost = lib.mkOption {
+      type = lib.types.str;
+      description = ''
+        The host from which the dataset should be synced. Must be an entry in
+        {option}`flake.colmena`.
+      '';
+    };
+    targetHost = lib.mkOption {
+      type = lib.types.str;
+      description = ''
+        The host to which the dataset should be synced. Must be an entry in
+        {option}`flake.colmena`.
+      '';
+    };
+    source = lib.mkOption {
+      type = lib.types.str;
+      description = ''
+        The path to the synced dataset in the ZFS namespace on the source host,
+        excluding the component that is the name of the dataset itself.
+      '';
+    };
+    target = lib.mkOption {
+      type = lib.types.str;
+      description = ''
+        The path to the synced dataset in the ZFS namespace on the target host,
+        excluding the component that is the name of the dataset itself. It must
+        already exist, defined with the {option}`randomcat.services.zfs`
+        module.
+      '';
+    };
+  };
+in
+{
+  options.fountain.backup = {
+    keys = lib.mkOption {
+      type = lib.types.attrsOf (lib.types.listOf lib.types.singleLineStr);
+      default = { };
+      description = ''
+        Lists of verbatim OpenSSH public keys that may be used to identify the
+        syncoid user on each target host. The key to each list must be the
+        host's hostname, as listed in {option}`flake.colmena`.
+      '';
+      example = {
+        host = [ "ssh-rsa AAAAB3NzaC1yc2etc/etc/etcjwrsh8e596z6J0l7 example@host" ];
+        bar = [ "ssh-ed25519 AAAAC3NzaCetcetera/etceteraJZMfk3QPfQ foo@bar" ];
+      };
+    };
+
+    sync = lib.mkOption {
+      type = lib.types.attrsOf (lib.types.submodule { options = syncOptions; });
+      default = { };
+      description = ''
+        Details of ZFS datasets whose snapshots should be synced from machine
+        to machine using syncoid. Syncoid will run hourly at 15 past the hour
+        and copy all ZFS snapshots from the source dataset to the target
+        dataset (recursing into child datasets).
+        
+        See descriptions for the individual options for more details. The name
+        of each attribute in this set is arbitrary and used to generate systemd
+        unit names.
+
+        This module does not actually cause snapshots to be taken; sanoid must
+        be configured separately to do this.
+      '';
+      example = {
+        "orm-state" = {
+          dataset = "state";
+          sourceHost = "orm";
+          targetHost = "elucredassa";
+          source = "rpool_orm";
+          target = "rpool_elucredassa/backup/orm";
+        };
+      };
+    };
+  };
+
+  # TODO: add some assertions to verify the options
+
+  config.flake.colmena = lib.mkMerge (lib.mapAttrsToList
+    (name: sync:
+      let
+        inherit (sync) dataset sourceHost targetHost source target;
+        sourceFqdn = "${sourceHost}.birdsong.network";
+      in
+      {
+        ${sourceHost} = { pkgs, ... }: {
+          randomcat.services.zfs.datasets."${source}/${dataset}".zfsPermissions.users.backup = [ "hold" "send" ];
+
+          users.users.backup = {
+            group = "backup";
+            isSystemUser = true;
+            useDefaultShell = true;
+            openssh.authorizedKeys.keys = cfg.keys.${targetHost};
+            packages = with pkgs; [ mbuffer lzop ]; # syncoid uses these if available but doesn't pull them in automatically
+          };
+          users.groups.backup = { };
+        };
+
+        ${targetHost} = {
+          randomcat.services.zfs.datasets.${target}.zfsPermissions.users.syncoid = [ "mount" "create" "receive" "recordsize" ];
+
+          services.syncoid = {
+            enable = true;
+            interval = "*-*-* *:15:00";
+            commonArgs = [ "--no-sync-snap" ];
+            commands = {
+              ${name} = {
+                source = "backup@${sourceFqdn}:${source}/${dataset}";
+                target = "${target}/${dataset}";
+                recursive = true;
+                recvOptions = "ux recordsize o compression=lz4";
+              };
+            };
+          };
+        };
+      })
+    cfg.sync
+  );
+}

flake/colmena.nix

@@ -0,0 +1,19 @@
+# https://git.lix.systems/the-distro/infra/src/commit/fbb23bf517206175764f154ddfd304b9ec501f87/colmena.nix
+{ lib, ... }: {
+  options.flake.colmena = lib.mkOption {
+    type = lib.types.submodule {
+      freeformType = lib.types.attrsOf (lib.mkOptionType {
+        name = "NixOS module";
+        description = "module containing NixOS options and/or config";
+        descriptionClass = "noun";
+        check = value: builtins.isAttrs value || builtins.isFunction value || builtins.isPath value;
+        merge = loc: defs: {
+          imports = map (def: def.value) defs;
+        };
+      });
+      options.meta = lib.mkOption {
+        type = lib.types.attrs;
+      };
+    };
+  };
+}

flake/default.nix

@@ -0,0 +1,6 @@
+{
+  imports = [
+    ./backup.nix
+    ./colmena.nix
+  ];
+}

home/qenya/dconf/default.nix

@@ -0,0 +1,26 @@
+{ config, lib, pkgs, osConfig, ... }:
+
+# dconf is the configuration manager for GNOME.
+
+let
+  isGnome = osConfig.services.desktopManager.gnome.enable;
+in
+{
+  dconf.enable = isGnome;
+
+  dconf.settings = {
+    "org/gnome/settings-daemon/plugins/color".night-light-enabled = true;
+    "org/gnome/desktop/sound".event-sounds = false;
+    "org/gnome/desktop/sound".allow-volume-above-100-percent = true;
+    "org/gnome/settings-daemon/plugins/power".power-saver-profile-on-low-battery = true;
+  };
+
+  imports = [
+    ./desktop.nix
+    ./keyboard.nix
+    ./mouse-touchpad.nix
+    ./multitasking.nix
+    ./shell.nix
+    ./wellbeing.nix
+  ];
+}

home/qenya/dconf/desktop.nix

@@ -0,0 +1,23 @@
+{ config, lib, pkgs, ... }:
+
+let inherit (lib) mkIf;
+in {
+  dconf.settings = {
+    "org/gnome/desktop/background" = {
+      picture-options = "zoom";
+      picture-uri = "${config.home.homeDirectory}/.background-image";
+      picture-uri-dark = "${config.home.homeDirectory}/.background-image";
+    };
+    "org/gnome/desktop/screensaver" = {
+      picture-options = "zoom";
+      picture-uri = "${config.home.homeDirectory}/.background-image";
+    };
+    "org/gnome/desktop/interface" = {
+      color-scheme = "prefer-dark";
+      enable-hot-corners = false;
+    };
+  };
+  home.file.".background-image" = mkIf config.dconf.enable {
+    source = ./background-image.jpg;
+  };
+}

home/qenya/dconf/keyboard.nix

@@ -0,0 +1,12 @@
+# { config, lib, pkgs, ... }:
+
+{
+  dconf.settings = {
+    "org/gnome/desktop/wm/keybindings" = {
+      # These are largely useless on most normal systems
+      # and conflict with VS Code's default keybinds for "Copy Line Up/Down"
+      move-to-workspace-up = [ ];
+      move-to-workspace-down = [ ];
+    };
+  };
+}

home/qenya/dconf/mouse-touchpad.nix

@@ -0,0 +1,16 @@
+{ config, lib, pkgs, ... }:
+
+{
+  dconf.settings = {
+    "org/gnome/desktop/peripherals/mouse" = {
+      natural-scroll = false;
+    };
+    "org/gnome/desktop/peripherals/touchpad" = {
+      click-method = "fingers";
+      disable-while-typing = false;
+      natural-scroll = true; # the correct option, whatever Janet says
+      tap-to-click = true;
+      two-finger-scrolling-enabled = true;
+    };
+  };
+}

home/qenya/dconf/multitasking.nix

@@ -0,0 +1,11 @@
+{ config, lib, pkgs, ... }:
+
+{
+  dconf.settings = {
+    "org/gnome/mutter" = {
+      edge-tiling = true;
+      dynamic-workspaces = true;
+      workspaces-only-on-primary = true;
+    };
+  };
+}

home/qenya/dconf/shell.nix

@@ -0,0 +1,26 @@
+{ config, lib, pkgs, ... }:
+{
+  dconf.settings = {
+    "org/gnome/shell" = {
+      disable-user-extensions = true;
+
+      # TODO: this is fine for now on tohru (the only GNOME system I use) but shouldn't depend on certain apps being installed
+      favorite-apps = [
+        "discord.desktop"
+        "org.gnome.Evolution.desktop"
+        "firefox.desktop"
+        "torbrowser.desktop"
+        "steam.desktop"
+        "codium.desktop"
+        "org.gnome.Console.desktop"
+        "org.gnome.Nautilus.desktop"
+        "org.gnome.SystemMonitor.desktop"
+      ];
+
+      # TODO: fill this out (needs preinstalled stuff removing first)
+      # app-picker-layout = [
+      #   ...
+      # ];
+    };
+  };
+}

home/qenya/dconf/wellbeing.nix

@@ -0,0 +1,19 @@
+{ config, lib, pkgs, ... }:
+
+# These features are cool and I would like to keep trying them, but they are
+# horribly bugged in GNOME 48.1. Consider re-enabling them when 48.2 is
+# released. See, e.g.:
+# https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/8289
+# https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/8299
+# https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/8305
+# https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/8376
+# https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/8398
+
+{
+  dconf.settings = {
+    # "org/gnome/desktop/screen-time-limits".daily-limit-enabled = true;
+    # "org/gnome/desktop/break-reminders".selected-breaks = [ "eyesight" "movement" ];
+    "org/gnome/desktop/screen-time-limits".daily-limit-enabled = false;
+    "org/gnome/desktop/break-reminders".selected-breaks = [ ];
+  };
+}

home/qenya/default.nix

@@ -0,0 +1,16 @@
+{
+  imports = [
+    ./dconf
+    ./feishin.nix
+    ./firefox.nix
+    ./fonts.nix
+    ./git.nix
+    ./packages.nix
+    ./tmux.nix
+    ./vscode.nix
+    ./xdg-mime-apps.nix
+    ./zsh.nix
+  ];
+  
+  home.stateVersion = "23.11";
+}

home/qenya/feishin.nix

@@ -0,0 +1,24 @@
+{ config, lib, pkgs, osConfig, ... }:
+
+# Feishin ideally wants to see mpv at runtime, but this isn't catered for by
+# the derivation in nixpkgs as it isn't strictly necessary.
+# An easier way to do this would be to write mpv's full nix store path to
+# Feishin's config. But Feishin has one JSON file for config and state, and
+# we'd rather not overwrite the latter. Until and unless home-manager grows
+# support for partially patching files, we live with this.
+
+let
+  inherit (lib) mkIf;
+  isGraphical = osConfig.services.xserver.enable;
+in
+{
+  home.packages = mkIf isGraphical [
+    (pkgs.feishin.overrideAttrs (originalAttrs: {
+      buildInputs = originalAttrs.buildInputs ++ [ pkgs.mpv ];
+      postFixup = ''
+        ${originalAttrs.postFixup or ""}
+        wrapProgram $out/bin/feishin --prefix PATH : ${lib.makeBinPath [ pkgs.mpv ]}
+      '';
+    }))
+  ];
+}

home/qenya/firefox.nix

@@ -0,0 +1,120 @@
+{ config, lib, pkgs, osConfig, inputs, ... }:
+
+let
+  inherit (lib) mkIf;
+  isGraphical = osConfig.services.xserver.enable;
+in
+{
+  programs.firefox = lib.mkIf isGraphical {
+    enable = true;
+    languagePacks = [ "en-GB" ];
+
+    policies = {
+      ExtensionSettings = {
+        # uBlock Origin
+        "uBlock0@raymondhill.net" = {
+          install_url = "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi";
+          installation_mode = "force_installed";
+          private_browsing = true;
+        };
+        # 1Password
+        "{d634138d-c276-4fc8-924b-40a0ea21d284}" = {
+          install_url = "https://addons.mozilla.org/firefox/downloads/latest/1password-x-password-manager/latest.xpi";
+          installation_mode = "force_installed";
+          default_area = "navbar";
+        };
+        # Disqus Auto-Expander
+        "disqus-auto-expander@john30013.com" = {
+          install_url = "https://addons.mozilla.org/firefox/downloads/latest/disqus-auto-expander/latest.xpi";
+          installation_mode = "force_installed";
+        };
+        # Indie Wiki Buddy
+        "{cb31ec5d-c49a-4e5a-b240-16c767444f62}" = {
+          install_url = "https://addons.mozilla.org/firefox/downloads/latest/indie-wiki-buddy/latest.xpi";
+          installation_mode = "force_installed";
+        };
+        # SteamDB
+        "firefox-extension@steamdb.info" = {
+          install_url = "https://addons.mozilla.org/firefox/downloads/latest/steam-database/latest.xpi";
+          installation_mode = "force_installed";
+        };
+      };
+    };
+
+    profiles.default = {
+      search = {
+        force = true;
+        default = "leta";
+        privateDefault = "leta";
+        order = [ "leta" "searxng" ];
+        engines = {
+          searxng = {
+            name = "SearXNG metasearch";
+            description = "SearXNG is a metasearch engine that respects your privacy.";
+            urls = [{
+              method = "POST";
+              template = "https://sx.catgirl.cloud/search";
+              params = [{ name = "q"; value = "{searchTerms}"; }];
+            }];
+            icon = "https://sx.catgirl.cloud/static/themes/simple/img/favicon.png";
+            definedAliases = [ "@sx" ];
+          };
+          leta = {
+            name = "Mullvad Leta";
+            description = "A privacy focused search engine provided by Mullvad.";
+            urls = [{ template = "https://leta.mullvad.net/search?q={searchTerms}&engine=google"; }];
+            iconMapObj."16" = "https://mullvad.net/favicon.ico";
+            definedAliases = [ "@leta" ];
+          };
+          netrunnerdb = {
+            name = "NetrunnerDB";
+            urls = [{ template = "https://netrunnerdb.com/find/?q={searchTerms}"; }];
+            iconMapObj."16" = "https://netrunnerdb.com/favicon.png";
+            iconMapObj."196" = "https://netrunnerdb.com/icon.png";
+            definedAliases = [ "@nrdb" ];
+          };
+        };
+      };
+
+      settings = {
+        "browser.startup.page" = 3; # resume previous session
+        "browser.newtabpage.activity-stream.showSponsored" = false;
+        "browser.newtabpage.activity-stream.showSponsoredTopSites" = false;
+
+        # disable telemetry
+        "datareporting.healthreport.uploadEnabled" = false;
+        "app.shield.optoutstudies.enabled" = false;
+        "browser.crashReports.unsubmittedCheck.autoSubmit2" = false;
+
+        # disable prefetch?
+
+        # DNS over HTTPS
+        "network.trr.custom_uri" = "https://base.dns.mullvad.net/dns-query";
+        "network.trr.excluded-domains" = "detectportal.firefox.com";
+        "network.trr.mode" = 3;
+        "network.trr.uri" = "https://base.dns.mullvad.net/dns-query";
+
+        "browser.search.suggest.enabled" = false;
+        "browser.urlbar.suggest.searches" = false;
+
+        "dom.security.https_only_mode" = true;
+        "browser.contentblocking.category" = "strict"; # Enhanced Tracking Protection
+        # I think these are implied by the above
+        # "privacy.donottrackheader.enabled" = true;
+        # "privacy.trackingprotection.enabled" = true;
+        # "privacy.trackingprotection.emailtracking.enabled" = true;
+        # "privacy.trackingprotection.socialtracking.enabled" = true;
+
+        "privacy.sanitize.sanitizeOnShutdown" = true;
+        "privacy.clearOnShutdown_v2.historyFormDataAndDownloads" = false;
+
+        "dom.private-attribution.submission.enabled" = false; # disable "Privacy-Preserving Attribution for Advertising"
+        "extensions.autoDisableScopes" = 0; # automatically enable extensions installed through nix
+
+        # external password manager
+        "signon.rememberSignons" = false;
+        "extensions.formautofill.creditCards.enabled" = false;
+      };
+    };
+  };
+}

home/qenya/fonts.nix

@@ -0,0 +1,17 @@
+{ config, lib, pkgs, osConfig, ... }:
+
+let
+  inherit (lib) mkIf;
+  isGraphical = osConfig.services.xserver.enable;
+in
+mkIf isGraphical {
+  fonts.fontconfig = {
+    enable = true;
+  };
+
+  home.packages = with pkgs; [
+    meslo-lgs-nf
+  ];
+
+  programs.vscode.profiles.default.userSettings."terminal.integrated.fontFamily" = "MesloLGS NF";
+}

home/qenya/git.nix

@@ -0,0 +1,14 @@
+{ config, lib, pkgs, ... }:
+
+{
+  programs.git = {
+    enable = true;
+    settings = {
+      user.email = "git@qenya.tel";
+      user.name = "Katherina Walshe-Grey";
+      init.defaultBranch = "main";
+      pull.rebase = true;
+      push.autoSetupRemote = true;
+    };
+  };
+}

home/qenya/packages.nix

@@ -0,0 +1,40 @@
+{ config, lib, pkgs, osConfig, ... }:
+
+let
+  inherit (lib) optionals;
+  isGraphical = osConfig.services.xserver.enable;
+  isGnome = osConfig.services.desktopManager.gnome.enable;
+  isPlasma = osConfig.services.desktopManager.plasma6.enable;
+in
+{
+  home.packages = with pkgs; [
+    eza # like `ls` but fancier
+    hexyl # like `xxd` but cooler
+    ripgrep # like `grep` but faster
+    tree # like `ls -R` but nicer
+    units
+    zip
+    unzip
+
+    # Extremely important
+    fortune
+    cowsay
+    lolcat
+  ] ++ optionals isGraphical [
+    _1password-gui
+    discord
+    # https://github.com/NixOS/nixpkgs/issues/427155
+    # gimp-with-plugins
+    tor-browser
+    zoom-us
+
+    # libreoffice
+    libreoffice
+    hunspell
+    hunspellDicts.en_GB-ise
+  ] ++ optionals isGnome [
+    celluloid
+  ] ++ optionals isPlasma [
+    haruna
+  ];
+}

home/qenya/tmux.nix

@@ -0,0 +1,33 @@
+{ config, lib, pkgs, ... }:
+
+{
+  # Derived from https://github.com/srid/nixos-config/blob/master/home/tmux.nix
+
+  programs.tmux = {
+    enable = true;
+    clock24 = true;
+    shortcut = "a"; # `screen` muscle memory compatibility
+    baseIndex = 1; # this is a UI, 0-indexing is not appropriate, fight me
+    newSession = true; # skip the manual step
+    escapeTime = 0; # otherwise I keep reflexively hammering Esc
+    secureSocket = false; # make sessions survive user logout
+
+    plugins = with pkgs; [
+      tmuxPlugins.better-mouse-mode
+    ];
+    mouse = true;
+
+    extraConfig = ''
+      # https://old.reddit.com/r/tmux/comments/mesrci/tmux_2_doesnt_seem_to_use_256_colors/
+      set -g default-terminal "xterm-256color"
+      set -ga terminal-overrides ",*256col*:Tc"
+      set -ga terminal-overrides '*:Ss=\E[%p1%d q:Se=\E[ q'
+      set-environment -g COLORTERM "truecolor"
+
+      # easy-to-remember split pane commands
+      bind | split-window -h -c "#{pane_current_path}"
+      bind - split-window -v -c "#{pane_current_path}"
+      bind c new-window -c "#{pane_current_path}"
+    '';
+  };
+}

home/qenya/vscode.nix

@@ -0,0 +1,100 @@
+{ config, lib, pkgs, osConfig, ... }:
+
+let
+  inherit (lib) mkIf mkDefault;
+  isGraphical = osConfig.services.xserver.enable;
+in
+{
+  programs.vscode = mkIf isGraphical {
+    enable = true;
+    package = pkgs.vscodium;
+    mutableExtensionsDir = false;
+    profiles.default = {
+      enableExtensionUpdateCheck = false;
+      enableUpdateCheck = false;
+      extensions = with pkgs.vscode-extensions; [
+        redhat.ansible
+        ms-python.black-formatter
+        ms-azuretools.vscode-docker
+        mkhl.direnv
+        dbaeumer.vscode-eslint
+        golang.go
+        eamodio.gitlens
+        jdinhlife.gruvbox
+        vadimcn.vscode-lldb
+        matangover.mypy
+        jnoortheen.nix-ide
+        ms-python.python
+        shopify.ruby-lsp
+        charliermarsh.ruff
+        rust-lang.rust-analyzer
+        redhat.vscode-yaml
+      ];
+      userSettings = {
+        "ansible.validation.lint.enabled" = true;
+        "ansible.python.interpreterPath" = "\${workspaceFolder}/.venv/bin/python"; # needs some manual one-time setup per repo, but it's better than fucking with FHS
+        "ansible.lightspeed.enabled" = false;
+        "css.format.spaceAroundSelectorSeparator" = true;
+        "css.format.newlineBetweenSelectors" = false;
+        "debug.allowBreakpointsEverywhere" = true;
+        "extensions.autoUpdate" = false;
+        "files.insertFinalNewline" = true;
+        "git.autofetch" = true;
+        "git.confirmSync" = false;
+        "git.enableSmartCommit" = true;
+        "git.inputValidation" = true;
+        "git.inputValidationSubjectLength" = null;
+        "javascript.updateImportsOnFileMove.enabled" = "always";
+        "nix.enableLanguageServer" = true;
+        "nix.serverPath" = "${pkgs.nil}/bin/nil";
+        "nix.serverSettings".nil = {
+          diagnostics.ignored = [ "unused_binding" "unused_with" ];
+          formatting.command = [ "${pkgs.nixpkgs-fmt}/bin/nixpkgs-fmt" ];
+          nix.flake.autoArchive = true;
+        };
+        "redhat.telemetry.enabled" = false;
+        "rust-analyzer.check.command" = "clippy";
+        "terminal.integrated.allowChords" = false;
+        "terminal.integrated.defaultProfile.linux" = "zsh";
+        "workbench.colorTheme" = "Gruvbox Dark Medium";
+
+        "[go]" = {
+          "editor.defaultFormatter" = "golang.go";
+          "editor.formatOnSave" = false;
+        };
+        "go.alternateTools" = {
+          "go" = "${pkgs.go}/bin/go";
+          "golangci-lint" = "${pkgs.golangci-lint}/bin/golangci-lint";
+          "gopls" = "${pkgs.gopls}/bin/gopls";
+          "dlv" = "${pkgs.delve}/bin/dlv";
+          "staticcheck" = "${pkgs.go-tools}/bin/staticcheck";
+        };
+        "go.lintTool" = "golangci-lint";
+        "go.toolsManagement.checkForUpdates" = "off";
+        "gopls" = {
+          "formatting.gofumpt" = true;
+          "ui.semanticTokens" = true;
+        };
+
+        "[python]" = {
+          "editor.defaultFormatter" = "ms-python.black-formatter";
+          "editor.formatOnSave" = true;
+          "editor.codeActionsOnSave" = {
+            "source.fixAll" = "explicit";
+            "source.organizeImports" = "explicit";
+          };
+        };
+        "python.createEnvironment.contentButton" = "show";
+        "python.defaultInterpreterPath" = "${pkgs.python3}/bin/python";
+        "ruff.nativeServer" = "on";
+        "ruff.path" = [ "${pkgs.ruff}/bin/ruff" ];
+        "mypy.dmypyExecutable" = "${pkgs.mypy}/bin/dmypy";
+
+        "[ruby]" = {
+          "editor.formatOnSave" = true;
+          "editor.formatOnType" = true;
+        };
+      };
+    };
+  };
+}

home/qenya/xdg-mime-apps.nix

@@ -0,0 +1,21 @@
+{ config, lib, pkgs, osConfig, ... }:
+
+let
+  isGraphical = osConfig.services.xserver.enable;
+in
+{
+  xdg.mimeApps = {
+    enable = isGraphical;
+    defaultApplications = {
+      "application/pdf" = [ "org.gnome.Evince.desktop" "org.kde.okular.desktop" ];
+      "application/zip" = [ "org.gnome.FileRoller.desktop" "org.kde.ark.desktop" ];
+      "image/gif" = [ "org.gnome.Loupe.desktop" "org.kde.gwenview.desktop" ];
+      "image/jpeg" = [ "org.gnome.Loupe.desktop" "org.kde.gwenview.desktop" ];
+      "image/png" = [ "org.gnome.Loupe.desktop" "org.kde.gwenview.desktop" ];
+      "text/plain" = [ "org.gnome.TextEditor.desktop" "org.kde.kate.desktop" ];
+      "x-scheme-handler/http" = "firefox.desktop";
+      "x-scheme-handler/https" = "firefox.desktop";
+      "x-scheme-handler/mailto" = "org.gnome.Evolution.desktop"; # TODO: email on KDE - is Kontact any good?
+    };
+  };
+}

home/qenya/zsh.nix

@@ -0,0 +1,43 @@
+{ config, lib, pkgs, ... }:
+
+{
+  home.packages = with pkgs; [ direnv ];
+  programs.zsh = {
+    enable = true;
+    enableCompletion = true;
+    autosuggestion.enable = true;
+    syntaxHighlighting.enable = true;
+    dotDir = ".config/zsh";
+
+    shellAliases = {
+      ll = "ls -l";
+
+      # don't clobber 
+      mv = "mv -i";
+      rename = "rename -i";
+
+      nix-shell = ''nix-shell --command "zsh"'';
+    };
+
+    history = {
+      size = 10000;
+      path = "${config.xdg.dataHome}/zsh/history";
+      ignorePatterns = [ "rm *" "pkill *" ];
+    };
+
+    oh-my-zsh = {
+      enable = true;
+      plugins = [ "git" "sudo" "direnv" ];
+      theme = ""; # defer to powerlevel10k
+    };
+
+    initContent = ''
+      source ${pkgs.zsh-powerlevel10k}/share/zsh-powerlevel10k/powerlevel10k.zsh-theme
+      source ${./.p10k.zsh}
+    '';
+
+    envExtra = ''
+      DEFAULT_USER=qenya
+    '';
+  };
+}

hosts/elucredassa/default.nix

@@ -0,0 +1,43 @@
+{ config, lib, pkgs, inputs, ... }:
+
+let
+  inherit (lib) mkForce;
+in
+{
+  imports = [
+    ./filesystems.nix
+    ./hardware.nix
+    ./networking.nix
+  ];
+
+  nixpkgs.hostPlatform = "x86_64-linux";
+  networking.hostName = "elucredassa";
+  networking.hostId = "a8ec6755";
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "usb_storage" "usbhid" "sd_mod" "rtsx_pci_sdmmc" ];
+  boot.kernelModules = [ "kvm-intel" ];
+
+  qenya.base-server.enable = true;
+
+  i18n.defaultLocale = "en_GB.UTF-8";
+  console.keyMap = "uk";
+  services.xserver.xkb.layout = "gb";
+
+  # These are populated by fountain.backup
+  randomcat.services.zfs.datasets = {
+    "rpool_elucredassa/backup" = { mountpoint = "none"; };
+    "rpool_elucredassa/backup/kalessin" = { mountpoint = "none"; };
+    "rpool_elucredassa/backup/orm" = { mountpoint = "none"; };
+  };
+
+  qenya.services.distributed-builds = {
+    enable = true;
+    keyFile = "/etc/ssh/ssh_host_ed25519_key";
+    builders = [ "kilgharrah" ];
+  };
+
+  fountain.users.qenya.enable = true;
+  fountain.admins = [ "qenya" ];
+
+  system.stateVersion = "24.11";
+}

hosts/elucredassa/filesystems.nix

@@ -0,0 +1,23 @@
+{ config, lib, pkgs, ... }:
+
+{
+  boot.initrd.luks.devices = {
+    "luks-rpool-elucredassa".device = "/dev/disk/by-uuid/5ece5b58-c57a-41ae-b086-03707c39c9a7";
+  };
+
+  fileSystems = {
+    "/" = {
+      device = "rpool_elucredassa/root";
+      fsType = "zfs";
+    };
+    "/boot" = {
+      device = "/dev/disk/by-uuid/2519-E2D6";
+      fsType = "vfat";
+      options = [ "fmask=0077" "dmask=0077" ];
+    };
+  };
+
+  swapDevices = [{ device = "/dev/disk/by-uuid/c7c48325-e90d-414d-b579-84cb45616ee9"; }];
+
+  boot.supportedFilesystems = [ "ntfs" ]; # for USB drives
+}

hosts/elucredassa/hardware.nix

@@ -0,0 +1,11 @@
+{ config, lib, pkgs, ... }:
+
+{
+  hardware.enableAllFirmware = true;
+  hardware.cpu.intel.updateMicrocode = true;
+  services.fwupd.enable = true;
+
+  # this is an old laptop
+  services.logind.lidSwitch = "ignore";
+}
+

hosts/elucredassa/networking.nix

@@ -0,0 +1,36 @@
+{ config, lib, pkgs, ... }:
+
+{
+  systemd.network.enable = true;
+  networking.useDHCP = false;
+
+  systemd.network.networks."10-wan" = {
+    matchConfig.Name = "enp1s0f1";
+    networkConfig = {
+      DHCP = "ipv4";
+      IPv6AcceptRA = true;
+      Tunnel = "sit-he-ipv6";
+    };
+    linkConfig.RequiredForOnline = "routable";
+  };
+
+  systemd.network.netdevs."25-he-ipv6" = {
+    netdevConfig = {
+      Name = "sit-he-ipv6";
+      Kind = "sit";
+      Description = "Hurricane Electric IPv6 Tunnel";
+      MTUBytes = 1480;
+    };
+
+    tunnelConfig = {
+      Remote = "216.66.88.98";
+      TTL = 255;
+    };
+  };
+
+  systemd.network.networks."25-he-ipv6" = {
+    matchConfig.Name = "sit-he-ipv6";
+    networkConfig.Address = [ "2001:470:1f1c:3e::2/64" ];
+    routes = [{ Destination = [ "::/0" ]; }];
+  };
+}

hosts/kalessin/default.nix

@@ -0,0 +1,65 @@
+{ config, lib, pkgs, ... }:
+
+let
+  keys = import ../../keys.nix;
+in
+{
+  imports = [
+    ./hardware-configuration.nix
+    ./networking.nix
+  ];
+
+  nixpkgs.hostPlatform = "aarch64-linux";
+  networking.hostName = "kalessin";
+  networking.hostId = "534b538e";
+
+  fountain.users.qenya.enable = true;
+  fountain.users.randomcat.enable = true;
+  fountain.users.trungle.enable = true;
+  fountain.admins = [ "qenya" "randomcat" ];
+
+  qenya.base-server.enable = true;
+
+  qenya.services.remote-builder = {
+    enable = true;
+    authorizedKeys.keys = [ ];
+  };
+
+  randomcat.services.zfs.datasets = {
+    "rpool_kalessin/state" = { mountpoint = "none"; };
+    "rpool_kalessin/state/headscale" = { mountpoint = "/var/lib/headscale"; };
+    "rpool_kalessin/state/owncast" = { mountpoint = "/var/lib/owncast"; };
+    "rpool_kalessin/state/forgejo" = { mountpoint = "/var/lib/forgejo"; };
+  };
+
+  services.sanoid.datasets."rpool_kalessin/state" = {
+    useTemplate = [ "production" ];
+    recursive = "zfs";
+  };
+
+  qenya.services.owncast = {
+    enable = true;
+    domain = "live.qenya.tel";
+    dataDir = "/var/lib/owncast";
+  };
+
+  qenya.services.headscale = {
+    enable = true;
+    domain = "headscale.unspecified.systems";
+    dataDir = "/var/lib/headscale";
+  };
+
+  qenya.services.forgejo = {
+    enable = true;
+    domain = "git.unspecified.systems";
+  };
+  fountain.services.web-redirect = {
+    enable = true;
+    domains = {
+      "git.katherina.rocks" = "git.unspecified.systems";
+      "git.qenya.tel" = "git.unspecified.systems";
+    };
+  };
+
+  system.stateVersion = "23.11";
+}

hosts/kalessin/hardware-configuration.nix

@@ -0,0 +1,38 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/profiles/qemu-guest.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "virtio_scsi" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "rpool_kalessin/root";
+      fsType = "zfs";
+    };
+
+  fileSystems."/nix" =
+    { device = "rpool_kalessin/nix";
+      fsType = "zfs";
+    };
+
+  fileSystems."/var" =
+    { device = "rpool_kalessin/var";
+      fsType = "zfs";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/2ADE-A033";
+      fsType = "vfat";
+      options = [ "fmask=0077" "dmask=0077" ];
+    };
+
+  swapDevices = [ ];
+}

hosts/kalessin/networking.nix

@@ -0,0 +1,6 @@
+{ config, lib, pkgs, ... }:
+
+{
+  networking.useNetworkd = true;
+  networking.interfaces.enp0s6.useDHCP = true;
+}

hosts/kilgharrah/backup.nix

@@ -0,0 +1,8 @@
+{ config, lib, pkgs, ... }:
+
+{
+  services.sanoid.datasets."rpool_albion/state" = {
+    useTemplate = [ "production" ];
+    recursive = "zfs";
+  };
+}

hosts/kilgharrah/default.nix

@@ -0,0 +1,75 @@
+{ config, lib, pkgs, ... }:
+
+let
+  keys = import ../../keys.nix;
+in
+{
+  imports = [
+    ./backup.nix
+    ./filesystems.nix
+    ./hardware.nix
+    ./networking.nix
+    ./plasma.nix
+
+    ./ftp.nix
+  ];
+
+  nixpkgs.hostPlatform = "x86_64-linux";
+  networking.hostName = "kilgharrah";
+  networking.hostId = "72885bb5";
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usb_storage" "usbhid" "sd_mod" ];
+  boot.kernelModules = [ "kvm-intel" ];
+
+  qenya.base-graphical.enable = true;
+
+  time.timeZone = "Europe/London";
+  i18n.defaultLocale = "en_GB.UTF-8";
+  console.keyMap = "uk";
+  services.xserver.xkb.layout = "gb";
+
+  fountain.users.qenya.enable = true;
+  age.secrets.user-password-kilgharrah-qenya.file = ../../secrets/user-password-kilgharrah-qenya.age;
+  users.users.qenya.hashedPasswordFile = config.age.secrets.user-password-kilgharrah-qenya.path;
+  fountain.admins = [ "qenya" ];
+  home-manager.users.qenya = { pkgs, ... }: {
+    home.packages = with pkgs; [
+      heroic
+      obs-studio
+    ];
+  };
+
+  qenya.services.remote-builder = {
+    enable = true;
+    authorizedKeys.keys = [
+      keys.machines.yevaud
+      keys.machines.orm
+      keys.machines.tohru
+      keys.machines.elucredassa
+    ];
+  };
+
+  programs.steam.enable = true;
+  qenya.services.audiobookshelf = {
+    enable = true;
+    domain = "audiobookshelf.qenya.tel";
+  };
+  qenya.services.jellyfin = {
+    enable = true;
+    domain = "tv.qenya.tel";
+  };
+  qenya.services.navidrome = {
+    enable = true;
+    domain = "music.qenya.tel";
+    dataDir = "/srv/music";
+  };
+  fountain.services.web-redirect = {
+    enable = true;
+    domains = {
+      "jellyfin.qenya.tel" = "tv.qenya.tel";
+    };
+  };
+
+  system.stateVersion = "24.05";
+
+}

hosts/kilgharrah/filesystems.nix

@@ -0,0 +1,93 @@
+{ config, lib, pkgs, ... }:
+
+{
+  # SSD on board
+
+  boot.initrd.luks.devices = {
+    "cryptroot".device = "/dev/disk/by-uuid/b414aaba-0a36-4135-a7e1-dc9489286acd";
+  };
+
+  fileSystems = {
+    "/" = {
+      device = "/dev/disk/by-uuid/ad4cbc18-8849-40ed-b0bf-097f8f46346b";
+      fsType = "btrfs";
+      options = [ "subvol=@" "compress=zstd" ];
+    };
+    "/home" = {
+      device = "/dev/disk/by-uuid/ad4cbc18-8849-40ed-b0bf-097f8f46346b";
+      fsType = "btrfs";
+      options = [ "subvol=@home" "compress=zstd" ];
+    };
+    "/nix" = {
+      device = "/dev/disk/by-uuid/ad4cbc18-8849-40ed-b0bf-097f8f46346b";
+      fsType = "btrfs";
+      options = [ "subvol=@nix" "compress=zstd" "noatime" ];
+    };
+    "/swap" = {
+      device = "/dev/disk/by-uuid/ad4cbc18-8849-40ed-b0bf-097f8f46346b";
+      fsType = "btrfs";
+      options = [ "subvol=@swap" "noatime" ];
+    };
+    "/root" = {
+      device = "/dev/disk/by-uuid/ad4cbc18-8849-40ed-b0bf-097f8f46346b";
+      fsType = "btrfs";
+      options = [ "subvol=@root" "compress=zstd" ];
+    };
+    "/srv" = {
+      device = "/dev/disk/by-uuid/ad4cbc18-8849-40ed-b0bf-097f8f46346b";
+      fsType = "btrfs";
+      options = [ "subvol=@srv" "compress=zstd" ];
+    };
+    "/var/cache" = {
+      device = "/dev/disk/by-uuid/ad4cbc18-8849-40ed-b0bf-097f8f46346b";
+      fsType = "btrfs";
+      options = [ "subvol=@cache" "compress=zstd" "noatime" ];
+    };
+    "/var/tmp" = {
+      device = "/dev/disk/by-uuid/ad4cbc18-8849-40ed-b0bf-097f8f46346b";
+      fsType = "btrfs";
+      options = [ "subvol=@tmp" "compress=zstd" "noatime" ];
+    };
+    "/var/log" = {
+      device = "/dev/disk/by-uuid/ad4cbc18-8849-40ed-b0bf-097f8f46346b";
+      fsType = "btrfs";
+      options = [ "subvol=@log" "compress=zstd" "noatime" ];
+    };
+    "/boot" = {
+      device = "/dev/disk/by-uuid/9582-E78D";
+      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
+    };
+  };
+
+  swapDevices = [{
+    device = "/swap/swapfile";
+    size = 32 * 1024;
+  }];
+
+
+  # HDD in bay
+
+  environment.etc.crypttab.text = ''
+    albion UUID=8a924f24-9b65-4f05-aeda-5b4080cc7aa1 /root/luks-albion.key
+  '';
+
+  randomcat.services.zfs.datasets = {
+    "rpool_albion/data" = { mountpoint = "none"; };
+    "rpool_albion/data/steam" = { mountpoint = "/home/qenya/.local/share/Steam"; };
+    "rpool_albion/state" = { mountpoint = "none"; };
+    "rpool_albion/state/audiobookshelf" = { mountpoint = "/var/lib/audiobookshelf"; };
+    "rpool_albion/state/jellyfin" = { mountpoint = "/var/lib/jellyfin"; };
+    "rpool_albion/state/navidrome" = { mountpoint = "/var/lib/navidrome"; };
+    "rpool_albion/srv" = { mountpoint = "none"; };
+    "rpool_albion/srv/audiobookshelf" = { mountpoint = "/srv/audiobookshelf"; };
+    "rpool_albion/srv/ftp" = { mountpoint = "/srv/ftp"; };
+    "rpool_albion/srv/jellyfin" = { mountpoint = "/srv/jellyfin"; };
+    "rpool_albion/srv/music" = { mountpoint = "/srv/music"; };
+  };
+
+
+  # Other
+
+  boot.supportedFilesystems = [ "ntfs" "zfs" ];
+}

hosts/kilgharrah/ftp.nix

@@ -0,0 +1,70 @@
+{ config, lib, pkgs, ... }:
+
+{
+  age.secrets.ftp-userDb-qenya = {
+    # To update this, see the nixos docs for services.vsftpd.userDbPath. Note
+    # that the command it gives to create a userDb, if applied to an *existing*
+    # userDb, will *add* the entries from the source file, overwriting any
+    # entries with the same username but leaving other existing entries intact.
+    # Also note the database format does not salt hashes.
+    file = ../../secrets/ftp-userDb-qenya.age;
+
+    # we have to specify this manually because pam_userdb strips the extension
+    path = "/etc/vsftpd/userDb.db";
+  };
+
+  services.vsftpd = {
+    enable = true;
+    localUsers = true;
+    forceLocalLoginsSSL = true;
+    forceLocalDataSSL = true;
+    rsaCertFile = "${config.security.acme.certs."ftp.qenya.tel".directory}/fullchain.pem";
+    rsaKeyFile = "${config.security.acme.certs."ftp.qenya.tel".directory}/key.pem";
+
+    enableVirtualUsers = true;
+    userlistDeny = false; # turn userlist from a denylist into an allowlist
+    userlist = [ "qenya" ]; # this is just a list of the users in the userDb
+    userDbPath = "/etc/vsftpd/userDb";
+
+    localRoot = "/srv/ftp";
+
+    extraConfig = ''
+      # nothing in the default cipher suite is enabled in modern ssl clients!
+      ssl_ciphers=HIGH
+
+      # set this to something firewallable
+      pasv_min_port=51000
+      pasv_max_port=51099
+
+      # don't bother with upgrading to TLS, just listen on FTPS only
+      implicit_ssl=YES
+      listen_port=990
+    '';
+  };
+
+  services.nginx = {
+    enable = true;
+    virtualHosts = {
+      "ftp.qenya.tel" = {
+        forceSSL = true;
+        useACMEHost = "ftp.qenya.tel";
+        locations."/".return = "503";
+      };
+    };
+  };
+
+  security.acme.certs = {
+    "ftp.qenya.tel" = {
+      webroot = "/var/lib/acme/acme-challenge";
+      group = "acme_ftp.qenya.tel";
+    };
+  };
+
+  users.groups."acme_ftp.qenya.tel".members = [
+    "vsftpd" # not configurable in the vsftpd nixos module
+    config.services.nginx.group
+  ];
+
+  networking.firewall.allowedTCPPorts = [ 990 80 443 ];
+  networking.firewall.allowedTCPPortRanges = [{ from = 51000; to = 51099; }];
+}

hosts/kilgharrah/hardware.nix

@@ -0,0 +1,57 @@
+{ config, lib, pkgs, ... }:
+
+{
+  hardware.enableAllFirmware = true;
+  hardware.cpu.intel.updateMicrocode = true;
+  services.fwupd.enable = true;
+
+  services.xserver.videoDrivers = [ "nvidia" ];
+  hardware.nvidia.open = false;
+  nixpkgs.config.cudaSupport = true;
+  nix.settings = {
+    # Community cache with prebuilt packages with cudaSupport enabled
+    substituters = [ "https://cache.nixos-cuda.org" ];
+    trusted-public-keys = [ "cache.nixos-cuda.org:74DUi4Ye579gUqzH4ziL9IyiJBlDpMRn9MBN8oNan9M=" ];
+  };
+
+  # # Downgrade to driver version 535 as 550 has problems with Wayland
+  # hardware.nvidia.package =
+  #   let
+  #     rcu_patch = pkgs.fetchpatch {
+  #       url = "https://github.com/gentoo/gentoo/raw/c64caf53/x11-drivers/nvidia-drivers/files/nvidia-drivers-470.223.02-gpl-pfn_valid.patch";
+  #       hash = "sha256-eZiQQp2S/asE7MfGvfe6dA/kdCvek9SYa/FFGp24dVg=";
+  #     };
+  #   in
+  #   config.boot.kernelPackages.nvidiaPackages.mkDriver {
+  #     version = "535.154.05";
+  #     sha256_64bit = "sha256-fpUGXKprgt6SYRDxSCemGXLrEsIA6GOinp+0eGbqqJg=";
+  #     sha256_aarch64 = "sha256-G0/GiObf/BZMkzzET8HQjdIcvCSqB1uhsinro2HLK9k=";
+  #     openSha256 = "sha256-wvRdHguGLxS0mR06P5Qi++pDJBCF8pJ8hr4T8O6TJIo=";
+  #     settingsSha256 = "sha256-9wqoDEWY4I7weWW05F4igj1Gj9wjHsREFMztfEmqm10=";
+  #     persistencedSha256 = "sha256-d0Q3Lk80JqkS1B54Mahu2yY/WocOqFFbZVBh+ToGhaE=";
+  #     patches = [ rcu_patch ];
+  #   };
+
+  services.printing.drivers = [ pkgs.hplip ];
+
+  # enable playing from bluray drive
+  boot.kernelModules = [ "sg" ];
+  environment.systemPackages = [
+    ((pkgs.vlc.override {
+      libbluray = (pkgs.libbluray.override {
+        withJava = true;
+        withAACS = true;
+        withBDplus = true;
+      });
+    }).overrideAttrs (originalAttrs: {
+      buildInputs = originalAttrs.buildInputs ++ [ pkgs.libdvdcss ];
+      # TODO: nixpkgs bug: libbluray needs patching to look at the nix store path of jdk17 when searching for a jdk
+      # as a workaround, wrap vlc and set JAVA_HOME, which it uses instead of searching when specified
+      nativeBuildInputs = originalAttrs.nativeBuildInputs ++ [ pkgs.makeWrapper ];
+      postFixup = ''
+        ${originalAttrs.postFixup or ""}
+        wrapProgram $out/bin/vlc --set JAVA_HOME ${pkgs.jdk17.home}
+      '';
+    }))
+  ];
+}

hosts/kilgharrah/networking.nix

@@ -0,0 +1,15 @@
+{ config, lib, pkgs, ... }:
+
+{
+  systemd.network.enable = true;
+  networking.useDHCP = false;
+  
+  systemd.network.networks."10-wan" = {
+    matchConfig.Name = "enp2s0";
+    networkConfig = {
+      DHCP = "ipv4";
+      IPv6AcceptRA = true;
+    };
+    linkConfig.RequiredForOnline = "routable";
+  };
+}

hosts/kilgharrah/plasma.nix

@@ -0,0 +1,109 @@
+{ config, lib, pkgs, inputs, ... }:
+
+let
+  inherit (lib) mkForce;
+in
+{
+  services.displayManager.gdm.enable = mkForce false;
+  services.desktopManager.gnome.enable = mkForce false;
+  services.displayManager.sddm.enable = true;
+  services.displayManager.sddm.wayland.enable = true;
+  services.desktopManager.plasma6.enable = true;
+
+  environment.systemPackages = with pkgs; [
+    (catppuccin-kde.override {
+      flavour = [ "mocha" ];
+      accents = [ "mauve" ];
+      winDecStyles = [ "modern" ];
+    })
+  ];
+
+  home-manager.users.qenya = { pkgs, ... }: {
+    imports = [
+      inputs.plasma-manager.homeManagerModules.plasma-manager
+    ];
+
+    programs.plasma = {
+      enable = true;
+      overrideConfig = true;
+
+      workspace = {
+        lookAndFeel = "Catppuccin-Mocha-Mauve";
+        colorScheme = "CatppuccinMochaMauve";
+        splashScreen.engine = "KSplashQML";
+        splashScreen.theme = "Catppuccin-Mocha-Mauve";
+        windowDecorations.library = "org.kde.kwin.aurorae";
+        windowDecorations.theme = "__aurorae__svg__CatppuccinMocha-Modern";
+      };
+
+      # For the moment, this hosts some network-accessible services, so we want it on 24/7
+      powerdevil.AC.autoSuspend.action = "nothing";
+
+      panels = [
+        # Dock
+        {
+          height = 49; # 41 * 1.2
+          lengthMode = "fit";
+          location = "bottom";
+          alignment = "center";
+          hiding = "dodgewindows";
+          widgets = [{
+            name = "org.kde.plasma.icontasks";
+            config.General = {
+              fill = false;
+              iconSpacing = 2;
+              launchers = lib.concatStringsSep "," [
+                "applications:firefox.desktop"
+                "applications:codium.desktop"
+                "applications:steam.desktop"
+                "applications:discord.desktop"
+                "applications:com.obsproject.Studio.desktop"
+                "applications:org.kde.dolphin.desktop"
+                "applications:org.kde.konsole.desktop"
+                "applications:org.kde.plasma-systemmonitor.desktop"
+              ];
+              maxStripes = 1;
+              showOnlyCurrentDesktop = false;
+              showOnlyCurrentScreen = false;
+            };
+          }];
+          screen = "all";
+        }
+
+        # Top bar
+        {
+          height = 29; # 24 * 1.2
+          location = "top";
+          alignment = "left";
+          floating = false;
+          widgets = [
+            {
+              name = "org.kde.plasma.kickoff";
+              config.General = {
+                lengthFirstMargin = 7;
+              };
+            }
+            { name = "org.kde.plasma.panelspacer"; }
+            {
+              name = "org.kde.plasma.digitalclock";
+              config.Appearance = {
+                autoFontAndSize = false;
+                customDateFormat = "dddd, d MMM";
+                dateDisplayFormat = "BesideTime";
+                dateFormat = "custom";
+                fontFamily = "Inter";
+                fontStyleName = "Bold";
+                fontWeight = 700;
+                boldText = true;
+                showWeekNumbers = true;
+              };
+            }
+            { name = "org.kde.plasma.panelspacer"; }
+            { name = "org.kde.plasma.systemtray"; }
+          ];
+          screen = "all";
+        }
+      ];
+    };
+  };
+}

hosts/orm/default.nix

@@ -0,0 +1,69 @@
+{ config, lib, pkgs, ... }:
+
+{
+  imports = [
+    ./hardware-configuration.nix
+    ./networking.nix
+  ];
+
+  nixpkgs.hostPlatform = "x86_64-linux";
+  networking.hostName = "orm";
+  networking.hostId = "00000000";
+
+  fountain.users.qenya.enable = true;
+  fountain.admins = [ "qenya" ];
+  qenya.base-server.enable = true;
+
+  qenya.services.distributed-builds = {
+    enable = true;
+    keyFile = "/etc/ssh/ssh_host_ed25519_key";
+    builders = [ "kilgharrah" ];
+  };
+  nix.settings.max-jobs = 0;
+
+  randomcat.services.zfs.datasets = {
+    "rpool_orm/state" = { mountpoint = "none"; };
+    "rpool_orm/state/actual" = { mountpoint = "/var/lib/private/actual"; };
+    "rpool_orm/state/postgresql" = { mountpoint = "/var/lib/postgresql"; };
+  };
+
+  services.sanoid.datasets."rpool_orm/state" = {
+    useTemplate = [ "production" ];
+    recursive = "zfs";
+  };
+
+  services.postgresql = {
+    enable = true;
+    package = pkgs.postgresql_17;
+    dataDir = "/var/lib/postgresql/17";
+    # managing imperatively instead of using ensureDatabases/ensureUsers
+
+    enableTCPIP = true;
+    settings = {
+      port = 5432;
+      # TODO: fix SSL
+      # ssl = true;
+    };
+    # only allow remote connections from within Tailscale
+    authentication = pkgs.lib.mkOverride 10 ''
+      #type database  DBuser  auth-method
+      local all       all     trust   # used by nixos for local monitoring
+      host  sameuser  all     100.64.0.0/10 scram-sha-256
+      host  sameuser  all     fd7a:115c:a1e0::/48 scram-sha-256
+    '';
+  };
+  networking.firewall.interfaces."tailscale0".allowedTCPPorts = [ 5432 ];
+
+  qenya.services.actual = {
+    enable = true;
+    domain = "actual.unspecified.systems";
+  };
+  fountain.services.web-redirect = {
+    enable = true;
+    domains = {
+      "actual.qenya.tel" = "actual.unspecified.systems";
+    };
+  };
+
+  system.stateVersion = "23.11";
+}

hosts/orm/hardware-configuration.nix

@@ -0,0 +1,40 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/profiles/qemu-guest.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "virtio_pci" "virtio_scsi" "sd_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "rpool_orm/root";
+      fsType = "zfs";
+    };
+
+  fileSystems."/nix" =
+    { device = "rpool_orm/nix";
+      fsType = "zfs";
+    };
+
+  fileSystems."/var" =
+    { device = "rpool_orm/var";
+      fsType = "zfs";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/3739-E8C1";
+      fsType = "vfat";
+      options = [ "fmask=0077" "dmask=0077" ];
+    };
+
+  swapDevices =
+    [ { device = "/dev/disk/by-uuid/a0ac8f60-25f9-4dec-af70-e3f4cd36c575"; }
+    ];
+}

hosts/orm/networking.nix

@@ -0,0 +1,6 @@
+{ config, lib, pkgs, ... }:
+
+{
+  networking.useNetworkd = true;
+  networking.interfaces.ens3.useDHCP = true;
+}

hosts/shaw/home.nix

@@ -0,0 +1,11 @@
+{ config, lib, pkgs, ... }:
+
+{
+  services.syncthing = {
+    # enable = true;
+    extraOptions = [
+      "--gui-address=:8385"
+      "--home=/home/qenya/state/syncthing"
+    ];
+  };
+}

hosts/tehanu/default.nix

@@ -0,0 +1,19 @@
+{ config, lib, pkgs, ... }:
+
+{
+  imports = [
+    ./hardware-configuration.nix
+    ./networking.nix
+  ];
+
+  nixpkgs.hostPlatform = "aarch64-linux";
+  networking.hostName = "tehanu";
+  networking.hostId = "8e1185ab";
+
+  fountain.users.qenya.enable = true;
+  fountain.admins = [ "qenya" ];
+
+  qenya.base-server.enable = true;
+
+  system.stateVersion = "23.11";
+}

hosts/tehanu/hardware-configuration.nix

@@ -0,0 +1,38 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/profiles/qemu-guest.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "virtio_scsi" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "rpool_tehanu/root";
+      fsType = "zfs";
+    };
+
+  fileSystems."/nix" =
+    { device = "rpool_tehanu/nix";
+      fsType = "zfs";
+    };
+
+  fileSystems."/var" =
+    { device = "rpool_tehanu/var";
+      fsType = "zfs";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/629B-BA09";
+      fsType = "vfat";
+      options = [ "fmask=0077" "dmask=0077" ];
+    };
+
+  swapDevices = [ ];
+}

hosts/tehanu/networking.nix

@@ -0,0 +1,6 @@
+{ config, lib, pkgs, ... }:
+
+{
+  networking.useNetworkd = true;
+  networking.interfaces.enp0s6.useDHCP = true;
+}

hosts/tohru/configuration.nix

@@ -1,90 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-{
-  imports =
-    [ # Include the results of the hardware scan.
-      ./hardware-configuration.nix
-    ];
-
-  boot.loader.systemd-boot.enable = true;
-  boot.loader.efi.canTouchEfiVariables = true;
-  boot.loader.systemd-boot.editor = false;
-
-  networking.hostName = "tohru";
-  networking.hostId = "31da19c1";
-  networking.networkmanager.enable = true;
-
-  time.timeZone = "Europe/London";
-
-  i18n.defaultLocale = "en_GB.UTF-8";
-  console.keyMap = "uk";
-
-  services.xserver.enable = true;
-  services.xserver.displayManager.gdm.enable = true;
-  services.xserver.desktopManager.gnome.enable = true;
-
-  services.xserver.xkb.layout = "gb";
-
-  services.printing.enable = true;
-
-  sound.enable = true;
-  hardware.pulseaudio.enable = true;
-
-  # Enable touchpad support (enabled default in most desktopManager).
-  services.xserver.libinput.enable = true;
-
-  # Define a user account. Don't forget to set a password with ‘passwd’.
-  users.users.bluebird = {
-    isNormalUser = true;
-    extraGroups = [ "wheel" "networkmanager" ];
-    packages = with pkgs; [
-      tor-browser-bundle-bin
-      firefox
-      tree
-    ];
-  };
-
-  # List packages installed in system profile. To search, run:
-  # $ nix search wget
-  environment.systemPackages = with pkgs; [
-  #   vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
-    bitwarden
-    git
-    plocate
-    wget
-  ];
-
-  # Some programs need SUID wrappers, can be configured further or are
-  # started in user sessions.
-  # programs.mtr.enable = true;
-  # programs.gnupg.agent = {
-  #   enable = true;
-  #   enableSSHSupport = true;
-  # };
-
-  # List services that you want to enable:
-
-  # Enable the OpenSSH daemon.
-  # services.openssh.enable = true;
-
-  # Open ports in the firewall.
-  # networking.firewall.allowedTCPPorts = [ ... ];
-  # networking.firewall.allowedUDPPorts = [ ... ];
-  # Or disable the firewall altogether.
-  # networking.firewall.enable = false;
-
-  nixpkgs.config.allowUnfree = true;
-  hardware.enableAllFirmware = true;
-  services.fwupd.enable = true;
-  services.fstrim.enable = true;
-  
-  boot.initrd.luks.devices = {
-    "rpool".device = "/dev/nvme0n1p2";
-  };
-
-  # This option defines the first version of NixOS you have installed on this particular machine,
-  # and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.
-  # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .
-  system.stateVersion = "23.11";
-}
-

hosts/tohru/default.nix

@@ -0,0 +1,73 @@
+{ config, lib, pkgs, inputs, ... }:
+
+let
+  inherit (lib) mkIf mkForce;
+in
+{
+  imports = [
+    ./filesystems.nix
+    ./hardware.nix
+    ./networking.nix
+
+    ./syncthing.nix
+  ];
+
+  nixpkgs.hostPlatform = "x86_64-linux";
+  networking.hostName = "tohru";
+  networking.hostId = "31da19c1";
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "nvme" "rtsx_pci_sdmmc" ];
+  boot.kernelModules = [ "kvm-intel" ];
+
+  qenya.base-graphical.enable = true;
+
+  time.timeZone = "Europe/London";
+  i18n.defaultLocale = "en_GB.UTF-8";
+  console.keyMap = "uk";
+  services.xserver.xkb.layout = "gb";
+
+  # tohru does not have the resources to run this under other load and is generally powered off when not in use.
+  # instead, just run `nix-store --optimise` every so often.
+  nix.optimise.automatic = mkForce false;
+
+  fountain.users.qenya.enable = true;
+  fountain.admins = [ "qenya" ];
+  age.secrets.user-password-tohru-qenya.file = ../../secrets/user-password-tohru-qenya.age;
+  users.users.qenya.hashedPasswordFile = config.age.secrets.user-password-tohru-qenya.path;
+  users.users.qenya.extraGroups = [
+    "networkmanager" # UI wifi configuration
+    "dialout" # access to serial ports
+    "docker"
+  ];
+
+  nixpkgs.overlays = [ inputs.scoutshonour.overlays.default ];
+  home-manager.users.qenya = { pkgs, ... }: {
+    home.packages = with pkgs; [
+      keepassxc
+      apostrophe
+      foliate
+      nicotine-plus
+      tuba
+
+      # games
+      openttd
+      prismlauncher
+      scoutshonour.digital-a-love-story
+      scoutshonour.dont-take-it-personally-babe
+    ];
+
+    services.podman.enable = true;
+  };
+
+  qenya.services.distributed-builds = {
+    enable = true;
+    keyFile = "/etc/ssh/ssh_host_ed25519_key";
+    builders = [ "kilgharrah" ];
+  };
+
+  programs.evolution.enable = true; # not in home-manager yet; not declaratively configurable yet
+  programs.steam.enable = true;
+  virtualisation.docker.enable = true;
+
+  system.stateVersion = "23.11";
+}

hosts/tohru/filesystems.nix

@@ -0,0 +1,51 @@
+{ config, lib, pkgs, ... }:
+
+{
+  boot.initrd.luks.devices = {
+    "rpool".device = "/dev/nvme0n1p2";
+  };
+
+  boot.supportedFilesystems = [ "ntfs" ]; # for USB drives
+
+  fileSystems = {
+    "/" = {
+      device = "rpool/root";
+      fsType = "zfs";
+    };
+    "/nix" = {
+      device = "rpool/nix";
+      fsType = "zfs";
+    };
+    "/var" = {
+      device = "rpool/var";
+      fsType = "zfs";
+    };
+    "/config" = {
+      device = "rpool/config";
+      fsType = "zfs";
+    };
+    "/home" = {
+      device = "rpool/home";
+      fsType = "zfs";
+    };
+    "/data" = {
+      device = "rpool/data";
+      fsType = "zfs";
+    };
+    "/data/syncthing" = {
+      device = "rpool/data/syncthing";
+      fsType = "zfs";
+    };
+    "/data/steam" = {
+      device = "rpool/data/steam";
+      fsType = "zfs";
+    };
+    "/boot" = {
+      device = "/dev/disk/by-uuid/7DD4-487E";
+      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
+    };
+  };
+
+  swapDevices = [{ device = "/dev/disk/by-uuid/a066313e-2467-4e07-ad0c-aeb7ff3f8d97"; }];
+}

hosts/tohru/hardware-configuration.nix

@@ -1,54 +0,0 @@
-# Do not modify this file!  It was generated by ‘nixos-generate-config’
-# and may be overwritten by future invocations.  Please make changes
-# to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, modulesPath, ... }:
-
-{
-  imports =
-    [ (modulesPath + "/installer/scan/not-detected.nix")
-    ];
-
-  boot.initrd.availableKernelModules = [ "xhci_pci" "nvme" "usb_storage" "sd_mod" "rtsx_pci_sdmmc" ];
-  boot.initrd.kernelModules = [ ];
-  boot.kernelModules = [ "kvm-intel" ];
-  boot.extraModulePackages = [ ];
-
-  fileSystems."/" =
-    { device = "rpool/root";
-      fsType = "zfs";
-    };
-
-  fileSystems."/nix" =
-    { device = "rpool/nix";
-      fsType = "zfs";
-    };
-
-  fileSystems."/var" =
-    { device = "rpool/var";
-      fsType = "zfs";
-    };
-
-  fileSystems."/home" =
-    { device = "rpool/home";
-      fsType = "zfs";
-    };
-
-  fileSystems."/boot" =
-    { device = "/dev/disk/by-uuid/7DD4-487E";
-      fsType = "vfat";
-      options = [ "fmask=0022" "dmask=0022" ];
-    };
-
-  swapDevices = [ ];
-
-  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
-  # (the default) this is the recommended approach. When using systemd-networkd it's
-  # still possible to use this option, but it's recommended to use it in conjunction
-  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
-  networking.useDHCP = lib.mkDefault true;
-  # networking.interfaces.eno2.useDHCP = lib.mkDefault true;
-  # networking.interfaces.wlo1.useDHCP = lib.mkDefault true;
-
-  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
-  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
-}

hosts/tohru/hardware.nix

@@ -0,0 +1,10 @@
+{ config, lib, pkgs, ... }:
+
+{
+  hardware.enableAllFirmware = true;
+  hardware.cpu.intel.updateMicrocode = true;
+  services.fwupd.enable = true;
+
+  services.printing.drivers = [ pkgs.hplip ];
+}
+

hosts/tohru/networking.nix

@@ -0,0 +1,8 @@
+{ config, lib, pkgs, ... }:
+
+{
+  networking.useNetworkd = true;
+  systemd.network.wait-online.enable = false;
+  
+  networking.networkmanager.enable = true;
+}

hosts/tohru/syncthing.nix

@@ -0,0 +1,53 @@
+{ config, lib, pkgs, ... }:
+
+{
+  services.syncthing = {
+    # enable = true;
+    user = "qenya";
+    dataDir = "/data/syncthing";
+    openDefaultPorts = true;
+    overrideDevices = true;
+    overrideFolders = true;
+    settings = {
+      devices = {
+        "kilgharrah" = { id = "RDT7IGD-76FZ6LY-37PPB2W-DWPQRPR-LZ4AXF7-4GIIHYJ-RVXUUSG-ZXPN3AZ"; };
+        "latias" = { id = "EN4W2SB-LB4AAZQ-6AQIE7G-S3BSCSP-V2EUNMM-KAQEHW3-PPAPGBO-PXRPWAL"; };
+        "shaw" = { id = "NC7WMZS-GQETJYR-IAYGD65-GHTSTVP-VAAG43K-W7N3LO5-C5OQMZ2-DTK6YA7"; };
+      };
+      folders = {
+        "Sync" = {
+          id = "uln2v-zwzwj";
+          path = "~/Sync";
+          devices = [ "kilgharrah" "shaw" ];
+        };
+        
+        "Documents" = {
+          id = "alp59-7gs9s";
+          path = "~/Documents";
+          devices = [ "kilgharrah" "shaw" ];
+        };
+        "Music" = {
+          id = "7xvkf-y62s7";
+          path = "~/Music";
+          devices = [ "kilgharrah" "shaw" ];
+        };
+        "Pictures" = {
+          id = "tbmhx-ep7wk";
+          path = "~/Pictures";
+          devices = [ "kilgharrah" "shaw" ];
+        };
+
+        "ES-DE" = {
+          id = "c1cbh-llw94";
+          path = "~/ES-DE";
+          devices = [ "kilgharrah" "latias" "shaw" ];
+        };
+        "ROMs" = {
+          id = "dcze4-v6act";
+          path = "~/ROMs";
+          devices = [ "kilgharrah" "latias" "shaw" ];
+        };
+      };
+    };
+  };
+}

hosts/yevaud/default.nix

@@ -0,0 +1,36 @@
+{ config, lib, pkgs, ... }:
+
+{
+  imports = [
+    ./hardware-configuration.nix
+    ./networking.nix
+
+    ./experiments/pennykettle.nix
+  ];
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  networking.hostName = "yevaud";
+  networking.hostId = "09673d65";
+
+  fountain.users.qenya.enable = true;
+  fountain.admins = [ "qenya" ];
+  qenya.base-server.enable = true;
+
+  qenya.services.distributed-builds = {
+    enable = true;
+    keyFile = "/etc/ssh/ssh_host_ed25519_key";
+    builders = [ "kilgharrah" ];
+  };
+  nix.settings.max-jobs = 0;
+
+  randomcat.services.zfs.datasets = {
+    "rpool/state" = { mountpoint = "none"; };
+  };
+
+  services.sanoid.datasets."rpool/state" = {
+    useTemplate = [ "production" ];
+    recursive = "zfs";
+  };
+
+  system.stateVersion = "23.11";
+}

hosts/yevaud/experiments/pennykettle.nix

@@ -0,0 +1,66 @@
+{ config, lib, pkgs, ... }:
+
+{
+  networking.firewall.allowedUDPPorts = [ 51820 ];
+  networking.firewall.interfaces."tailscale0".allowedTCPPorts = config.networking.firewall.allowedTCPPorts ++ [ 1080 ];
+
+  environment.systemPackages = [ pkgs.wireguard-tools ];
+  networking.wireguard.interfaces."wg-protonvpn" = {
+    ips = [ "10.2.0.2/32" ];
+    peers = [{
+      allowedIPs = [ "0.0.0.0/0" "::/0" ];
+      endpoint = "217.138.216.162:51820";
+      publicKey = "C+u+eQw5yWI2APCfVJwW6Ovj3g4IrTOfe+tMZnNz43s=";
+    }];
+    privateKeyFile = config.age.secrets.protonvpn-pennykettle1.path;
+    listenPort = 51820;
+    table = "957851094"; # randomly generated
+  };
+
+  networking.localCommands = ''
+    ip rule add from 10.2.0.2/32 table 957851094
+  '';
+  networking.firewall.checkReversePath = "loose";
+
+  age.secrets.protonvpn-pennykettle1 = {
+    file = ../../../secrets/protonvpn-pennykettle1.age;
+    owner = "root";
+    group = "systemd-network";
+    mode = "640";
+  };
+
+  services.dante = {
+    enable = true;
+    config = ''
+      debug: 2
+      internal: tailscale0
+      external: wg-protonvpn
+
+      # auth/tls handled by tailscale
+      clientmethod: none
+      socksmethod: none
+
+      # allow connections from tailscale
+      # "0/0" matches any v4 or v6 address
+      client pass {
+        from: 100.64.0.0/10 to: 0/0
+        log: error connect disconnect
+      }
+      client pass {
+        from: fd7a:115c:a1e0::/48 to: 0/0
+        log: error connect disconnect
+      }
+
+      socks pass {
+        from: 0/0 to: 0/0
+        protocol: tcp udp
+        log: error connect disconnect iooperation
+      }
+    '';
+  };
+
+  systemd.services.dante = {
+    wants = [ "tailscaled-autoconnect.service" ];
+    after = [ "tailscaled-autoconnect.service" ];
+  };
+}

hosts/yevaud/hardware-configuration.nix

@@ -0,0 +1,40 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/profiles/qemu-guest.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "virtio_pci" "virtio_scsi" "sd_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-amd" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "rpool/root";
+      fsType = "zfs";
+    };
+
+  fileSystems."/nix" =
+    { device = "rpool/nix";
+      fsType = "zfs";
+    };
+
+  fileSystems."/var" =
+    { device = "rpool/var";
+      fsType = "zfs";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/107D-5AB3";
+      fsType = "vfat";
+      options = [ "fmask=0077" "dmask=0077" ];
+    };
+
+  swapDevices =
+    [ { device = "/dev/disk/by-uuid/f8b6eb35-33ad-4e19-bf3d-cac5ec38a8dc"; }
+    ];
+}

hosts/yevaud/networking.nix

@@ -0,0 +1,5 @@
+{ config, lib, pkgs, ... }:
+
+{
+  networking.interfaces.ens3.useDHCP = true;
+}

keys.nix

@@ -0,0 +1,35 @@
+{
+  machines = {
+    reese = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPd0qGxvcMLDwX1bqYpwOUL5c/CIgBllMFr+bGkwiwAn root@reese";
+    bear = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIZ9Kn1CIcDHaleKHf7zO6O30Rbxs/FwL0/Ie+mEjZJr root@bear";
+    shaw = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOMC0AomCZZiUV/BCpImiV4p/vGvFaz5QNc+fJLXmS5p root@shaw";
+    groves = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPQNZ/Q+x7mDYfYXftpZpWkfPByyMBbYmVFobM4vSDW2 root@groves";
+    tohru = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOk8wuGzF0Y7SaH9aimo3SmCz99MTQwL+rEVhx0jsueU root@tohru";
+    yevaud = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICHUAgyQhl390yUObLUI+jEbuNrZ2U6+8px628DolD+T root@yevaud";
+    orm = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGc9rkcdOVWozBFj3kLVnSyUQQbyyH+UG+bLawanQkRQ root@orm";
+    kalessin = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOPt3iSSmgnlsv1/jafgZgI7o8UuXzcAL45hID2ThfS8 root@kalessin";
+    tehanu = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJ1fNylfLo7Z8m/DroRlj7cHMLhYL7boP3r/upVrtMJQ root@tehanu";
+    kilgharrah = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOgGF3gzzlMbxxk3UAAgHJ7sDdjqtrw7UW16M1XhXtz2 root@kilgharrah";
+    elucredassa = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIA+Y/vqGNc1wXUAg4XMAAcLupkggywj2LpYDwA16ONbH root@elucredassa";
+    carter = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEHHHYG6A995Po05+JXQsvB79ZoIiSOJnW6AiJgVYPic root@carter";
+    siberys = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICF9p2X9Mph+PYV1YZHuMXXBevJatecqx3yr/B8znQud root@vps-9fd2f351.vps.ovh.net";
+  };
+
+  users = {
+    qenya = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFjBuuxo+w3yED0aPnsNb8S90p/GgBqFEG9K4ETZ5Wkq qenya@kilgharrah"
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJEmkV9arotms79lJPsLHkdzAac4eu3pYS08ym0sB/on qenya@tohru"
+    ];
+    randomcat = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDHagOaeTR+/7FL9sErciMw30cmV/VW8HU7J3ZFU5nj9 janet@randomcat.org"
+    ];
+    trungle = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAA57legzdIcYTVVri4Wc0CvgWefbRhmUqhu0F/5f8FB reuben@glenda-artix"
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHAuYWPfYVKdjBY/gBMt2n11Seb+hMqjui1PQ6C4ph8i richard@tress"
+    ];
+    gaelan = [
+      "ssh-rsa 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 gbs@canishe.com"
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHId+2dJYiZK++p8lu9Bax0J29JjeuU4qcIBdLwEz3lm gbs@canishe.com"
+    ];
+  };
+}

secrets.nix

@@ -0,0 +1,18 @@
+let
+  keys = import ./keys.nix;
+
+  secrets = with keys; {
+    ftp-userDb-qenya = [ machines.kilgharrah ] ++ keys.users.qenya;
+    user-password-kilgharrah-qenya = [ machines.kilgharrah ] ++ keys.users.qenya;
+    user-password-tohru-qenya = [ machines.tohru ] ++ keys.users.qenya;
+    protonvpn-pennykettle1 = [ machines.yevaud ] ++ keys.users.qenya;
+  };
+in
+builtins.listToAttrs (
+  map
+    (secretName: {
+      name = "secrets/${secretName}.age";
+      value.publicKeys = secrets."${secretName}";
+    })
+    (builtins.attrNames secrets)
+)

secrets/protonvpn-pennykettle1.age

@@ -0,0 +1,9 @@
+age-encryption.org/v1
+-> ssh-ed25519 uJfgGw +h4WiWyMlQZ5iaMFTl/whUD0vJnIN0GYeqRbZ0MIH0o
+eKio4DsSJlrvSAjmR0naDO/lmB78o7cy7QC9WZjHUa0
+-> ssh-ed25519 seJ9Iw xov8WY0TxEj5/wkWg1T0kmrbpXsNhDLnZwqyIg0eExA
+wu5QApQk6K8Fu5XMTrWY2veoYbJVuQmn3DJXewVB860
+-> ssh-ed25519 900ILw N6RbpHr4Vwgm0BUCuMXzVo3VEgrl29NF8ZJU5Far7yk
+KdA1dZXmcSF3cH9bVdmIbj7iZO3uuSY+isjswDzSu+Y
+--- YtnS9FqXVat2hi9BLvX+71HEZDw3zcxIQ7Dp5+iao4c
+¢¼ða'þš|<7C>‡N7N”†ÊT5]O¤0Säm<-1ë»ëª:d®„–›g¡^/
ä†u7µïNû?XþMçûìÄì~Þs.9c¾C

services/default.nix

@@ -0,0 +1,11 @@
+{
+  imports = [
+    ./qenya
+    ./randomcat
+
+    ./distributed-builds.nix
+    ./remote-builder.nix
+    ./reverse-proxy.nix
+    ./web-redirect.nix
+  ];
+}

services/distributed-builds.nix

@@ -0,0 +1,54 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (builtins) elem;
+  inherit (lib) mkIf mkEnableOption mkOption types optional;
+  cfg = config.qenya.services.distributed-builds;
+in
+{
+  options.qenya.services.distributed-builds = {
+    enable = mkEnableOption "distributed builds";
+    keyFile = mkOption {
+      type = types.path;
+      description = ''
+        Path to the OpenSSH private key to be used for distributed builds.
+      '';
+    };
+    builders = mkOption {
+      type = types.listOf types.str;
+      default = [ ];
+      description = ''
+        List of builders to attempt to use for distributed builds.
+      '';
+      example = [ "kalessin" ];
+    };
+  };
+
+  config = mkIf cfg.enable {
+    assertions = [{
+      assertion = cfg ? keyFile;
+      message = "must specify a private key to be used for distributed builds";
+    }];
+
+    nix.distributedBuilds = true;
+    nix.settings.builders-use-substitutes = true;
+
+    nix.buildMachines =
+      (optional (elem "kalessin" cfg.builders) {
+        hostName = "kalessin.birdsong.network";
+        sshUser = "remotebuild";
+        sshKey = cfg.keyFile;
+        systems = [ "aarch64-linux" ];
+        maxJobs = 2;
+        supportedFeatures = [ "big-parallel" ];
+      })
+      ++ (optional (elem "kilgharrah" cfg.builders) {
+        hostName = "kilgharrah.birdsong.network";
+        sshUser = "remotebuild";
+        sshKey = cfg.keyFile;
+        systems = [ "x86_64-linux" ];
+        maxJobs = 12;
+        supportedFeatures = [ "big-parallel" ];
+      });
+  };
+}

services/qenya/actual.nix

@@ -0,0 +1,24 @@
+{ config, lib, pkgs, inputs, ... }:
+
+let
+  inherit (lib) mkIf mkOption mkEnableOption types;
+  cfg = config.qenya.services.actual;
+in
+{
+  options.qenya.services.actual = {
+    enable = mkEnableOption "Actual Budget";
+    domain = mkOption {
+      type = types.str;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    fountain.services.reverse-proxy.enable = true;
+    fountain.services.reverse-proxy.domains.${cfg.domain} = "http://127.0.0.1:5006/";
+
+    services.actual = {
+      enable = true;
+      settings.port = 5006;
+    };
+  };
+}

services/qenya/audiobookshelf.nix

@@ -0,0 +1,22 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+  cfg = config.qenya.services.audiobookshelf;
+in
+{
+  options.qenya.services.audiobookshelf = {
+    enable = mkEnableOption "Audiobookshelf";
+    domain = mkOption {
+      type = types.str;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    fountain.services.reverse-proxy.enable = true;
+    fountain.services.reverse-proxy.domains.${cfg.domain} = "http://127.0.0.1:8234/";
+
+    services.audiobookshelf.enable = true;
+    services.audiobookshelf.port = 8234;
+  };
+}

services/qenya/default.nix

@@ -0,0 +1,11 @@
+{
+  imports = [
+    ./actual.nix
+    ./audiobookshelf.nix
+    ./forgejo.nix
+    ./headscale.nix
+    ./jellyfin.nix
+    ./navidrome.nix
+    ./owncast.nix
+  ];
+}

services/qenya/forgejo.nix

@@ -0,0 +1,44 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+  cfg = config.qenya.services.forgejo;
+in
+{
+  options.qenya.services.forgejo = {
+    enable = mkEnableOption "Forgejo";
+    domain = mkOption {
+      type = types.str;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    fountain.services.reverse-proxy.enable = true;
+    fountain.services.reverse-proxy.domains.${cfg.domain} = "http://[::1]:3000/";
+
+    # TODO: email out
+    # TODO: interface customisation
+
+    services.forgejo = {
+      enable = true;
+      settings = {
+        DEFAULT.APP_NAME = cfg.domain;
+        cache = {
+          ADAPTER = "twoqueue";
+          HOST = ''{"size": 100, "recent_ratio": 0.25, "ghost_ratio": 0.5}'';
+        };
+        database = {
+          DB_TYPE = "sqlite3";
+          SQLITE_JOURNAL_MODE = "WAL";
+        };
+        security.LOGIN_REMEMBER_DAYS = 365;
+        server = {
+          DOMAIN = cfg.domain;
+          HTTP_PORT = 3000;
+          ROOT_URL = "https://${cfg.domain}/";
+        };
+        service.DISABLE_REGISTRATION = true;
+      };
+    };
+  };
+}

services/qenya/headscale.nix

@@ -0,0 +1,41 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) mkIf mkOption mkEnableOption types;
+  cfg = config.qenya.services.headscale;
+in
+{
+  options.qenya.services.headscale = {
+    enable = mkEnableOption "Headscale";
+    domain = mkOption {
+      type = types.str;
+    };
+    dataDir = mkOption {
+      type = types.str;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    fountain.services.reverse-proxy.enable = true;
+    fountain.services.reverse-proxy.domains.${cfg.domain} = "http://127.0.0.1:32770/";
+
+    services.headscale = {
+      enable = true;
+      address = "0.0.0.0"; # required to disable built-in ACME client for some reason
+      port = 32770;
+      settings = {
+        server_url = "https://${cfg.domain}:443";
+        prefixes.allocation = "random";
+        dns = {
+          magic_dns = true;
+          base_domain = "birdsong.network";
+          override_local_dns = false;
+        };
+
+        # disable built-in ACME client
+        tls_cert_path = null;
+        tls_key_path = null;
+      };
+    };
+  };
+}

services/qenya/jellyfin.nix

@@ -0,0 +1,20 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+  cfg = config.qenya.services.jellyfin;
+in
+{
+  options.qenya.services.jellyfin = {
+    enable = mkEnableOption "Jellyfin";
+    domain = mkOption {
+      type = types.str;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    fountain.services.reverse-proxy.enable = true;
+    fountain.services.reverse-proxy.domains.${cfg.domain} = "http://127.0.0.1:8096/";
+    services.jellyfin.enable = true;
+  };
+}

services/qenya/navidrome.nix

@@ -0,0 +1,28 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) mkIf mkOption mkEnableOption types;
+  cfg = config.qenya.services.navidrome;
+in
+{
+  options.qenya.services.navidrome = {
+    enable = mkEnableOption "Navidrome";
+    domain = mkOption {
+      type = types.str;
+    };
+    dataDir = mkOption {
+      type = types.str;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    fountain.services.reverse-proxy.enable = true;
+    fountain.services.reverse-proxy.domains.${cfg.domain} = "http://127.0.0.1:4533/";
+
+    services.navidrome.enable = true;
+    services.navidrome.settings = {
+      MusicFolder = cfg.dataDir;
+      BaseUrl = "https://${cfg.domain}";
+    };
+  };
+}

services/qenya/owncast.nix

@@ -0,0 +1,28 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) mkIf mkOption mkEnableOption types;
+  cfg = config.qenya.services.owncast;
+in
+{
+  options.qenya.services.owncast = {
+    enable = mkEnableOption "Owncast";
+    domain = mkOption {
+      type = types.str;
+    };
+    dataDir = mkOption {
+      type = types.str;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    fountain.services.reverse-proxy.enable = true;
+    fountain.services.reverse-proxy.domains.${cfg.domain} = "http://127.0.0.1:32769/";
+
+    networking.firewall.allowedTCPPorts = [ 1935 ]; # for rtmp
+
+    services.owncast.enable = true;
+    services.owncast.port = 32769;
+    services.owncast.dataDir = cfg.dataDir;
+  };
+}

services/randomcat/default.nix

@@ -0,0 +1,7 @@
+{ inputs, ... }:
+
+{
+  imports = [
+    (builtins.toPath "${inputs.randomcat}/services/default.nix")
+  ];
+}

services/remote-builder.nix

@@ -0,0 +1,44 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (lib) mkIf mkOption mkEnableOption types;
+  cfg = config.qenya.services.remote-builder;
+in
+{
+  options.qenya.services.remote-builder = {
+    enable = mkEnableOption "remote builder";
+    authorizedKeys = {
+      keys = mkOption {
+        type = types.listOf types.singleLineStr;
+        default = [ ];
+        description = ''
+          A list of verbatim OpenSSH public keys that should be authorized to
+          use this remote builder. See
+          `users.users.<name>.openssh.authorizedKeys.keys`.
+        '';
+      };
+      keyFiles = mkOption {
+        type = types.listOf types.path;
+        default = [ ];
+        description = ''
+          A list of files each containing one OpenSSH public key that should be
+          authorized to use this remote builder. See
+          `users.users.<name>.openssh.authorizedKeys.keyFiles`.
+        '';
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    users.users.remotebuild = {
+      isSystemUser = true;
+      group = "nogroup";
+      shell = "/bin/sh";
+      openssh.authorizedKeys.keys = cfg.authorizedKeys.keys;
+      openssh.authorizedKeys.keyFiles = cfg.authorizedKeys.keyFiles;
+    };
+
+    nix.nrBuildUsers = 64;
+    nix.settings.trusted-users = [ "remotebuild" ];
+  };
+}