{
  config,
  lib,
  pkgs,
  modulesPath,
  ...
}: {
  imports = [(modulesPath + "/installer/scan/not-detected.nix")];
  boot.initrd.availableKernelModules = ["xhci_pci" "nvme" "sdhci_pci"];
  boot.initrd.kernelModules = [];
  boot.kernelPackages = pkgs.linuxPackages_latest;
  boot.kernelModules = ["kvm-intel"];
  boot.extraModulePackages = [];

  fileSystems."/" = {
    device = "/dev/disk/by-uuid/5455cfb4-0efd-4f55-b496-d2cab3f419b7";
    fsType = "btrfs";
    options = ["subvol=root"];
  };

  boot.initrd.systemd = {
    services.impermanent-btrfs = {
      description = "saves old root and makes new one";
      unitConfig.DefaultDependencies = false;
      serviceConfig = {
        Type = "oneshot";
        StandardOutput = "journal+console";
        StandardError = "journal+console";
      };
      requiredBy = [
        "initrd.target"
      ];
      before = [
        "sysroot.mount"
      ];
      requires = [
        "initrd-root-device.target"
      ];
      after = [
        "initrd-root-device.target"
        "local-fs-pre.target"
      ];
      script = ''
        mkdir /btrfs_tmp
        mount ${config.fileSystems."/".device} /btrfs_tmp
        if [[ -e /btrfs_tmp/root ]]; then
          mkdir -p /btrfs_tmp/old_roots
          timestamp=$(date --date="@$(stat -c %Y /btrfs_tmp/root)" "+%Y-%m-%-d_%H:$M:%S")
          mv /btrfs_tmp/root "/btrfs_tmp/old_roots/$timestamp"
        fi

        delete_subvolume_recursively() {
          IFS=$'\n'
          for i in $(btrfs subvolume list -o "$1" | cut -f 9- -d ' '); do
            delete_subvolume_recursively "/btrfs_tmp/$i"
          done
          btrfs subvolume delete "$1"
        }

        for i in $(find /btrfs_tmp/old_roots/ -maxdepth 1 -mtime +30); do
          delete_subvolume_recursively "$i"
        done

        btrfs subvolume create /btrfs_tmp/root
        mkdir /btrfs_tmp/root/persist
        mkdir /btrfs_tmp/root/etc
        mount ${config.fileSystems."/persist".device} /btrfs_tmp/root/persist -o subvol=persist
        cp /btrfs_tmp/root/persist/etc/ssh /btrfs_tmp/root/etc/ssh -r
        umount /btrfs_tmp/root/persist
        rm -r /btrfs_tmp/root/persist
        umount /btrfs_tmp
      '';
    };
    extraBin = {
      "mkdir" = "${pkgs.coreutils}/bin/mkdir";
      "date" = "${pkgs.coreutils}/bin/date";
      "stat" = "${pkgs.coreutils}/bin/stat";
      "mv" = "${pkgs.coreutils}/bin/mv";
      "cp" = "${pkgs.coreutils}/bin/cp";
      "rm" = "${pkgs.coreutils}/bin/rm";
      "btrfs" = "${pkgs.btrfs-progs}/bin/btrfs";
      # find, mount, umount already there
    };
  };

  fileSystems."/nix" = {
    device = "/dev/disk/by-uuid/0e586651-36f4-42b0-99b3-3f0704a894d6";
    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";
    options = ["fmask=0022" "dmask=0022"];
  };

  swapDevices = [];

  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
  system.stateVersion = "26.05";
}