{config, pkgs, ...}:

{

  # The initrd has to contain any module that might be necessary for
  # mounting the CD/DVD.
  boot.initrd.availableKernelModules =
    [ # SATA/PATA support.
      "ahci"

      "ata_piix"

      "sata_inic162x" "sata_nv" "sata_promise" "sata_qstor"
      "sata_sil" "sata_sil24" "sata_sis" "sata_svw" "sata_sx4"
      "sata_uli" "sata_via" "sata_vsc"

      "pata_ali" "pata_amd" "pata_artop" "pata_atiixp"
      "pata_cs5520" "pata_cs5530" "pata_cs5535" "pata_efar"
      "pata_hpt366" "pata_hpt37x" "pata_hpt3x2n" "pata_hpt3x3"
      "pata_it8213" "pata_it821x" "pata_jmicron" "pata_marvell"
      "pata_mpiix" "pata_netcell" "pata_ns87410" "pata_oldpiix"
      "pata_pcmcia" "pata_pdc2027x" "pata_qdi" "pata_rz1000"
      "pata_sc1200" "pata_serverworks" "pata_sil680" "pata_sis"
      "pata_sl82c105" "pata_triflex" "pata_via"
      "pata_winbond"

      # SCSI support (incomplete).
      "3w-9xxx" "3w-xxxx" "aic79xx" "aic7xxx" "arcmsr" 

      # USB support, especially for booting from USB CD-ROM
      # drives.
      "usb_storage"

      # Firewire support.  Not tested.
      "ohci1394" "sbp2"

      # Virtio (QEMU, KVM etc.) support.
      "virtio_net" "virtio_pci" "virtio_blk" "virtio_balloon" "virtio_console"

      # Add vfat to enable people to copy the contents of the CD to a
      # bootable USB stick.
      "vfat" "nls_cp437" "nls_iso8859-1"
    ];

  boot.initrd.kernelModules =
    [ # Wait for SCSI devices to appear.
      "scsi_wait_scan"
    ];

  # Include some utilities that are useful for installing or repairing
  # the system.
  environment.systemPackages = [
    pkgs.subversion # for nixos-checkout
    pkgs.w3m # needed for the manual anyway
    pkgs.testdisk # useful for repairing boot problems
    pkgs.mssys # for writing Microsoft boot sectors / MBRs
    pkgs.parted
    pkgs.ddrescue
    pkgs.ccrypt
    pkgs.cryptsetup # needed for dm-crypt volumes

    # Some networking tools.
    pkgs.sshfsFuse
    pkgs.socat
    pkgs.screen

    # Hardware-related tools.
    pkgs.sdparm
    pkgs.hdparm
    pkgs.dmraid

    # Tools to create / manipulate filesystems.
    pkgs.ntfsprogs # for resizing NTFS partitions
    pkgs.btrfsProgs
    pkgs.dosfstools
    pkgs.xfsprogs
    pkgs.jfsutils
    pkgs.jfsrec

    # Some compression/archiver tools.
    pkgs.unrar
    pkgs.unzip
    pkgs.zip
    pkgs.xz
    pkgs.dar # disk archiver

    # Some editors.
    pkgs.nvi
    pkgs.bvi # binary editor
    pkgs.joe
  ];
}