hosts/skrott: move here from the dibbler repo

flake.lock

@@ -21,6 +21,28 @@
         "type": "github"
       }
     },
+    "dibbler": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1767688395,
+        "narHash": "sha256-vvAr3XPLmpG8cP1F0csbxfVNipiWD5Jhtg2lE42H+AQ=",
+        "ref": "main",
+        "rev": "1733843b772dc0055f0182155c9a105bccd7a858",
+        "revCount": 216,
+        "type": "git",
+        "url": "https://git.pvv.ntnu.no/Projects/dibbler.git"
+      },
+      "original": {
+        "ref": "main",
+        "type": "git",
+        "url": "https://git.pvv.ntnu.no/Projects/dibbler.git"
+      }
+    },
     "disko": {
       "inputs": {
         "nixpkgs": [
@@ -62,6 +84,23 @@
       "inputs": {
         "systems": "systems"
       },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "id": "flake-utils",
+        "type": "indirect"
+      }
+    },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
       "locked": {
         "lastModified": 1726560853,
         "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
@@ -250,7 +289,7 @@
     "nix-topology": {
       "inputs": {
         "devshell": "devshell",
-        "flake-utils": "flake-utils",
+        "flake-utils": "flake-utils_2",
         "nixpkgs": [
           "nixpkgs"
         ],
@@ -368,6 +407,7 @@
     },
     "root": {
       "inputs": {
+        "dibbler": "dibbler",
         "disko": "disko",
         "gergle": "gergle",
         "greg-ng": "greg-ng",
@@ -505,6 +545,21 @@
         "repo": "default",
         "type": "github"
       }
+    },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
     }
   },
   "root": "root",

flake.nix

@@ -20,6 +20,9 @@
     pvv-calendar-bot.url = "git+https://git.pvv.ntnu.no/Projects/calendar-bot.git?ref=main";
     pvv-calendar-bot.inputs.nixpkgs.follows = "nixpkgs";
 
+    dibbler.url = "git+https://git.pvv.ntnu.no/Projects/dibbler.git?ref=main";
+    dibbler.inputs.nixpkgs.follows = "nixpkgs";
+
     matrix-next.url = "github:dali99/nixos-matrix-modules/v0.8.0";
     matrix-next.inputs.nixpkgs.follows = "nixpkgs";
 
@@ -80,24 +83,30 @@
         nixpkgs:
         name:
         configurationPath:
-        extraArgs:
+        extraArgs@{
+          system ? "x86_64-linux",
+          specialArgs ? { },
+          modules ? [ ],
+          overlays ? [ ],
+          enableDefaults ? true,
+          ...
+        }:
         lib.nixosSystem (lib.recursiveUpdate
-        (let
-          system = "x86_64-linux";
-        in {
+        {
           inherit system;
 
           specialArgs = {
             inherit unstablePkgs inputs;
             values = import ./values.nix;
             fp = path: ./${path};
-          } // extraArgs.specialArgs or { };
+          } // specialArgs;
 
           modules = [
             configurationPath
+          ] ++ (lib.optionals enableDefaults [
             sops-nix.nixosModules.sops
             inputs.roowho2.nixosModules.default
-          ] ++ extraArgs.modules or [];
+          ]) ++ modules;
 
           pkgs = import nixpkgs {
             inherit system;
@@ -106,16 +115,18 @@
                 "nvidia-x11"
                 "nvidia-settings"
               ];
-            overlays = [
+            overlays = (lib.optionals enableDefaults [
               # Global overlays go here
               inputs.roowho2.overlays.default
-            ] ++ extraArgs.overlays or [ ];
+            ]) ++ overlays;
           };
-        })
+        }
         (builtins.removeAttrs extraArgs [
+          "system"
           "modules"
           "overlays"
           "specialArgs"
+          "enableDefaults"
         ])
       );
 
@@ -200,6 +211,16 @@
           inputs.gergle.overlays.default
         ];
       };
+      skrott = stableNixosConfig "skrott" {
+        system = "aarch64-linux";
+        modules = [
+          (nixpkgs + "/nixos/modules/installer/sd-card/sd-image-aarch64.nix")
+          inputs.dibbler.nixosModules.default
+        ];
+        overlays = [
+          inputs.dibbler.overlays.default
+        ];
+      };
     }
     //
     (let
@@ -261,6 +282,11 @@
       lib.genAttrs allMachines
         (machine: self.nixosConfigurations.${machine}.config.system.build.toplevel)
       //
+      # Skrott is exception
+      {
+        skrott = self.nixosConfigurations.skrott.config.system.build.sdImage;
+      }
+      //
       # Nix-topology
       (let
         topology' = import inputs.nix-topology {

hosts/skrott/configuration.nix

@@ -0,0 +1,60 @@
+{ lib, fp, ... }: {
+  imports = [
+    # ./hardware-configuration.nix
+
+    (fp /base)
+  ];
+
+  boot = {
+    consoleLogLevel = 0;
+    enableContainers = false;
+    loader.grub.enable = false;
+  };
+
+  # Now turn off a bunch of stuff lol
+  system.autoUpgrade.enable = lib.mkForce false;
+  services.irqbalance.enable = lib.mkForce false;
+  services.logrotate.enable = lib.mkForce false;
+  services.nginx.enable = lib.mkForce false;
+  services.postfix.enable = lib.mkForce false;
+
+  # TODO: can we reduce further?
+
+  system.stateVersion = "25.05";
+
+  # sops.defaultSopsFile = fp /secrets/skrott/skrott.yaml;
+  # sops.age.sshKeyPaths = [ "/etc/ssh/ssh_host_ed25519_key" ];
+  # sops.age.keyFile = "/var/lib/sops-nix/key.txt";
+  # sops.age.generateKey = true;
+
+  # zramSwap.enable = true;
+
+  networking = {
+    hostName = "skrot";
+    interfaces.eth0 = {
+      useDHCP = false;
+      ipv4.addresses = [{
+        address = "129.241.210.235";
+        prefixLength = 25;
+      }];
+    };
+  };
+
+  services.dibbler = {
+    enable = true;
+    kioskMode = true;
+    limitScreenWidth = 80;
+    limitScreenHeight = 42;
+  };
+
+  # https://github.com/NixOS/nixpkgs/issues/84105
+  boot.kernelParams = [
+    "console=ttyUSB0,9600"
+    # "console=tty1" # Already part of the module
+  ];
+  systemd.services."serial-getty@ttyUSB0" = {
+    enable = true;
+    wantedBy = [ "getty.target" ]; # to start at boot
+    serviceConfig.Restart = "always"; # restart when session is closed
+  };
+}