modularise lenovo?

machines/lenovo.nix

@@ -1,66 +1,17 @@
 {
   config,
   lib,
+  pkgs,
   modulesPath,
-  machine,
   ...
 }: {
-  imports = [
-    ./impermanence.nix
-    (modulesPath + "/installer/scan/not-detected.nix")
-  ];
-  boot.loader = {
-    efi.canTouchEfiVariables = true;
-    systemd-boot.enable = true;
-  };
-  hardware.bluetooth = {
-    enable = true;
-    powerOnBoot = true;
-  };
-  i18n.defaultLocale = "de_DE.UTF-8";
-  networking = {
-    dhcpcd.enable = true;
-    firewall.enable = true;
-    hostName = machine.hostname;
-    networkmanager.enable = true;
-  };
-  nix.settings.experimental-features = [
-    "nix-command"
-    "flakes"
-  ];
-  nixpkgs.config.allowUnfreePredicate = pkg:
-    builtins.elem (lib.getName pkg) [
-      "steam"
-      "steam-original"
-      "steam-unwrapped"
-      "steam-run"
-    ];
-  programs = {
-    noshell.enable = true;
-    steam.enable = true;
-    sway.enable = true;
-  };
-  services = {
-    blueman.enable = true;
-    displayManager = {
-      enable = true;
-      ly.enable = true;
-    };
-    libinput.enable = true;
-    openssh.enable = true;
-    printing.enable = true;
-  };
-  system.stateVersion = "26.05";
-  time.timeZone = "Europe/Berlin";
+  imports = [(modulesPath + "/installer/scan/not-detected.nix")];
   boot.initrd.availableKernelModules = ["xhci_pci" "nvme" "sdhci_pci"];
   boot.initrd.kernelModules = [];
   boot.kernelModules = ["kvm-intel"];
   boot.extraModulePackages = [];
 
   fileSystems."/" = {
-    #device = "none";
-    #fsType = "tmpfs";
-    #options = ["defaults" "size=60%" "mode=755"];
     device = "/dev/disk/by-uuid/5455cfb4-0efd-4f55-b496-d2cab3f419b7";
     fsType = "btrfs";
     options = ["subvol=root"];
@@ -88,12 +39,12 @@
     done
 
     btrfs subvolume create /btrfs_tmp/root
-    mkdir /btrfs_tmp/root/nix
+    mkdir /btrfs_tmp/root/persist
     mkdir /btrfs_tmp/root/etc
-    mount ${config.fileSystems."/nix".device} /btrfs_tmp/root/nix
-    cp /btrfs_tmp/root/nix/persist/etc/ssh /btrfs_tmp/root/etc/ssh -r
-    umount /btrfs_tmp/root/nix
-    rm -r /btrfs_tmp/root/nix
+    mount ${config.fileSystems."/persist".device} /btrfs_tmp/root/persist
+    cp /btrfs_tmp/root/persist/etc/ssh /btrfs_tmp/root/etc/ssh -r
+    umount /btrfs_tmp/root/persist
+    rm -r /btrfs_tmp/root/persist
     umount /btrfs_tmp
   '';
 
@@ -102,6 +53,12 @@
     fsType = "btrfs";
   };
 
+  fileSystems."/persist" = {
+    device = "/dev/disk/by-uuid/5455cfb4-0efd-4f55-b496-d2cab3f419b7";
+    fsType = "btrfs";
+    options = ["subvol=persist"];
+  };
+
   fileSystems."/boot" = {
     device = "/dev/disk/by-uuid/F425-55BA";
     fsType = "vfat";
@@ -112,4 +69,5 @@
 
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
   hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+  system.stateVersion = "26.05";
 }

machines/lenovo/impermanence.nix

@@ -1,19 +0,0 @@
-{
-  environment.persistence."/nix/persist" = {
-    enable = true;
-    hideMounts = true;
-    directories = [
-      "/var/log"
-      "/var/lib/bluetooth"
-      "/var/lib/nixos"
-      "/var/lib/systemd/coredump"
-      "/etc/NetworkManager/system-connections"
-      "/etc/ssh"
-      "/etc/ly/custom-sessions"
-    ];
-    files = [
-      "/etc/machine-id"
-      "/etc/ly/save.txt"
-    ];
-  };
-}