# Do not modify this file!  It was generated by ‘nixos-generate-config’
# and may be overwritten by future invocations.  Please make changes
# to /etc/nixos/configuration.nix instead.
{
  config,
  lib,
  pkgs,
  modulesPath,
  ...
}: {
  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/16c93673-4f0e-4010-a7f4-7ccffb20edb7";
    fsType = "btrfs";
    options = ["subvol=root"];
  };

  boot.initrd.postResumeCommands = lib.mkAfter ''
    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
    umount /btrfs_tmp
  '';

  fileSystems."/nix" = {
    device = "/dev/disk/by-uuid/0e586651-36f4-42b0-99b3-3f0704a894d6";
    fsType = "btrfs";
  };

  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;
}