add argiletum

flake.lock

@@ -68,6 +68,26 @@
         "type": "github"
       }
     },
+    "disko": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1777713215,
+        "narHash": "sha256-8GzXDOXckDWwST8TY5DbwYFjdvQLlP7K9CLSVx6iTTo=",
+        "owner": "nix-community",
+        "repo": "disko",
+        "rev": "63b4e7e6cf75307c1d26ac3762b886b5b0247267",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "disko",
+        "type": "github"
+      }
+    },
     "firefox-addons": {
       "inputs": {
         "nixpkgs": [
@@ -565,6 +585,7 @@
     },
     "root": {
       "inputs": {
+        "disko": "disko",
         "firefox-addons": "firefox-addons",
         "flake-compat": "flake-compat",
         "flake-parts": "flake-parts",

flake.nix

@@ -38,6 +38,11 @@
     systems.url = "github:nix-systems/default";
 
     # flake inputs with dependencies (in alphabetic order)
+    disko = {
+      url = "github:nix-community/disko";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     firefox-addons = {
       url = "gitlab:rycee/nur-expressions?dir=pkgs/firefox-addons";
       inputs = {

systems/argiletum/configuration.nix

@@ -1,9 +1,11 @@
 { lib, ... }:
 {
+  imports = [ ./disk.nix ];
+
   time.timeZone = "America/New_York";
 
   networking = {
-    hostId = "5f8a1c2e";
+    hostId = "c3798ccc";
     firewall = {
       enable = true;
       allowedTCPPorts = [ 80 ];
@@ -21,5 +23,5 @@
 
   services.tang.enable = true;
 
-  system.stateVersion = "25.11";
+  system.stateVersion = "26.11";
 }

systems/argiletum/default.nix

@@ -7,5 +7,6 @@
   users = [ "alice" ];
   modules = [
     inputs.nixos-hardware.nixosModules.raspberry-pi-4
+    inputs.disko.nixosModules.disko
   ];
 }

systems/argiletum/disk.nix

@@ -0,0 +1,46 @@
+{
+  disko.devices = {
+    disk = {
+      # SD card — change device to /dev/sda if booting from USB instead
+      main = {
+        type = "disk";
+        device = "/dev/mmcblk0";
+        content = {
+          type = "table";
+          format = "mbr";
+          partitions = [
+            {
+              # Raspberry Pi firmware partition — must be vfat and first
+              name = "firmware";
+              type = "primary";
+              start = "1MiB";
+              end = "512MiB";
+              bootable = true;
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot/firmware";
+                mountOptions = [
+                  "fmask=0077"
+                  "dmask=0077"
+                ];
+              };
+            }
+            {
+              # Root filesystem
+              name = "root";
+              type = "primary";
+              start = "512MiB";
+              end = "100%";
+              content = {
+                type = "filesystem";
+                format = "ext4";
+                mountpoint = "/";
+              };
+            }
+          ];
+        };
+      };
+    };
+  };
+}

systems/argiletum/hardware.nix

@@ -1,21 +1,7 @@
-# TODO: replace with the output of:
-#   sudo nixos-generate-config --show-hardware-config
-# run on the Pi after initial boot into the NixOS installer.
+# TODO: after first boot, regenerate with:
+#   sudo nixos-generate-config --no-filesystems
+# (disko owns fileSystems; do not add them here)
 { ... }:
 {
-  fileSystems."/" = {
-    device = "/dev/disk/by-label/nixos";
-    fsType = "ext4";
-  };
-
-  fileSystems."/boot/firmware" = {
-    device = "/dev/disk/by-label/NIXOS_BOOT";
-    fsType = "vfat";
-    options = [
-      "fmask=0077"
-      "dmask=0077"
-    ];
-  };
-
   swapDevices = [ ];
 }