Kitty too is in this impermanence update

hosts/kitty/default.nix

@@ -2,6 +2,7 @@
 {
   imports = [
     ./boot
+    ./disko
     ./filesystems
     ./firewall
     ./hardware

hosts/kitty/disko/default.nix

@@ -0,0 +1,75 @@
+{ config, disko, ... }:
+{
+  imports = [ disko.nixosModules.disko ];
+
+  disko.devices = {
+    disk = {
+      "${config.networking.hostName}" = {
+        type = "disk";
+        device = "/dev/nvme0n1";
+        content = {
+          type = "gpt";
+          partitions = {
+            ESP = {
+              priority = 1;
+              size = "2G";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [ "umask=0077" ];
+              };
+            };
+            main = {
+              size = "100%";
+              content = {
+                type = "lvm_pv";
+                vg = "${config.networking.hostName}";
+              };
+            };
+          };
+        };
+      };
+    };
+
+    lvm_vg = {
+      "${config.networking.hostName}" = {
+        type = "lvm_vg";
+        lvs = {
+          root = {
+            size = "100%";
+            content = {
+              type = "btrfs";
+              extraArgs = [ "-f" ];
+              subvolumes = {
+                "/root" = {
+                  mountpoint = "/";
+                  mountOptions = [ "compress=zstd" "noatime" "ssd" ];
+                };
+                "/prev" = {
+                  mountpoint = "/prev";
+                  mountOptions = [ "compress=zstd" "noatime" "ssd" "noexec" ];
+                };
+                "/nix" = {
+                  mountpoint = "/nix";
+                  mountOptions = [ "compress=zstd" "noatime" "ssd" ];
+                };
+              };
+            };
+          };
+          swap = {
+            size = "4G";
+            content = {
+              type = "swap";
+              discardPolicy = "both";
+            };
+          };
+        };
+      };
+    };
+  };
+
+  # Needed for impermanence
+  fileSystems."/persist".neededForBoot = true;
+}

hosts/kitty/filesystems/default.nix

@@ -1,43 +1,10 @@
 { ... }:
 {
-  fileSystems = {
-    "/" = {
-      device = "/dev/disk/by-uuid/b8b7ed47-c98c-4a49-af01-b2832dde1287";
-      fsType = "btrfs";
-      options = [ "subvol=root" "compress=zstd" "noatime" "ssd" ];
-    };
-    "/prev" = {
-      device = "/dev/disk/by-uuid/b8b7ed47-c98c-4a49-af01-b2832dde1287";
-      fsType = "btrfs";
-      options = [ "subvol=prev" "compress=zstd" "noatime" "ssd" "noexec" ];
-    };
-    "/nix" = {
-      device = "/dev/disk/by-uuid/b8b7ed47-c98c-4a49-af01-b2832dde1287";
-      fsType = "btrfs";
-      options = [ "subvol=nix" "compress=zstd" "noatime" "ssd" ];
-    };
-    "/boot" = {
-      device = "/dev/disk/by-uuid/CD94-1D3F";
-      fsType = "vfat";
-      options = [ "umask=0077" ];
-    };
-
-    # Impermanence and subvols
-    "/persist" = {
+  fileSystems."/persist" = {
     device = "/dev/disk/by-uuid/acf95700-8669-45c7-9a72-bf3215b3c325";
     fsType = "btrfs";
     neededForBoot = true;
     options = [ "subvol=persist" "compress=zstd" "noatime" ];
   };
-    "/export/KittyNFS" = {
-      depends = [ "/persist" ];
-      device = "/persist/export/KittyNFS";
-      fsType = "none";
-      options = [ "bind" ];
-    };
-  };
-
-  swapDevices = [
-    { device = "/dev/disk/by-uuid/57178cfc-3e71-4d35-8c7f-e355f9dc84df"; }
-  ];
+  environment.persistence."/persist".directories = [ "/export/KittyNFS" ];
 }