# 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" "ahci" "usb_storage" "sd_mod" "sdhci_pci" ];
    boot.initrd.kernelModules = [ ];
    boot.kernelModules = [ "kvm-intel" ];
    boot.extraModulePackages = [ ];

    fileSystems."/" = {
        device = "/dev/disk/by-partlabel/disk-stationette-root";
        fsType = "btrfs";
        options = [ "subvol=root" ];
    };

    boot.initrd.postDeviceCommands = lib.mkAfter ''
        mkdir /btrfs_tmp
        mount /dev/disk/by-partlabel/disk-stationette-root /btrfs_tmp
        if [[ -e /btrfs_tmp/root ]]; then
            mkdir -p /btrfs_tmp/old_roots
            timestamp=$(dat +%Y-%m-%d_%H-%M-%S)
            mv /btrfs_tmp/root "/btrfs_tmp/old_roots/$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."/persist" = {
        device = "/dev/disk/by-partlabel/disk-stationette-root";
        neededForBoot = true;
        fsType = "btrfs";
        options = [ "subvol=persist" ];
    };

    fileSystems."/nix" = {
        device = "/dev/disk/by-partlabel/disk-stationette-root";
        neededForBoot = true;
        fsType = "btrfs";
        options = [ "subvol=nix" ];
    };

    fileSystems."/boot" = {
        device = "/dev/disk/by-partlabel/disk-stationette-ESP";
        fsType = "vfat";
        options = [ "fmask=0022" "dmask=0022" "umask=0077" ];
    };

    swapDevices = [ ];

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