feat: Rihla | prepare for impermanence

hosts/common/disks/rihla.nix

@@ -1,9 +1,20 @@
+{
+  lib,
+  config,
+  device,
+  withSwap,
+  swapSize,
+  label,
+  ...
+}:
+
 {
   disko = {
     devices = {
       disk = {
         main = {
-          device = "/dev/nvme0n1";
+          inherit device;
+
           type = "disk";
           content = {
             type = "gpt";
@@ -50,8 +61,8 @@
         crypt_vg = {
           type = "lvm_vg";
           lvs = {
-            swap = {
-              size = "64G";
+            swap = lib.mkIf withSwap {
+              size = "${swapSize}G";
               content = {
                 type = "swap";
                 resumeDevice = true;
@@ -63,20 +74,22 @@
                 type = "btrfs";
                 extraArgs = [
                   "-L"
-                  "nixos"
+                  label
                   "-f"
                 ];
                 subvolumes = {
                   "@root" = {
                     mountpoint = "/";
                     mountOptions = [
+                      "subvol=root"
                       "compress=zstd"
+                      "noatime"
                     ];
                   };
-                  "@home" = {
-                    mountpoint = "/home";
+                  "@persist" = {
+                    mountpoint = config.hostSpec.persist;
                     mountOptions = [
-                      "subvol=home"
+                      "subvol=persist"
                       "compress=zstd"
                       "noatime"
                     ];

hosts/nixos/rihla/default.nix

@@ -25,7 +25,12 @@
     # ========= Disk Layout =========
     #
     inputs.disko.nixosModules.disko
-    (lib.custom.relativeToRoot "hosts/common/disks/rihla.nix")
+    (lib.custom.relativeToRoot "hosts/common/disks/rihla.nix") {
+      device = "/dev/nvme0n1";
+      withSwap = true;
+      swapSize = 64;
+      label = "nixos";
+    }
 
     #
     # ========= Required Configs =========
@@ -67,6 +72,7 @@
   #
   hostSpec = {
     hostName = "rihla";
+    useYubikey = lib.mkForce true;
   };
 
   networking = {

modules/common/host-spec.nix

@@ -40,6 +40,16 @@
       description = "The home directory of the user";
       default = "/home/${config.hostSpec.username}";
     };
+    impermenance = lib.mkOption {
+      type = lib.types.bool;
+      description = "Whether or not to enable impermenance";
+      default = false;
+    };
+    persist = lib.mkOption {
+      type = lib.types.str;
+      description = "The folder to persist data if impermenance is enabled";
+      default = "/persist";
+    };
     useYubikey = lib.mkOption {
       type = lib.types.bool;
       default = false;