nixpkgs/configuration/options.nix

[


  { 
    name = ["networking" "hostname"];
    default = "nixos";
    description = "The name of the machine.";
  }

  
  {
    name = ["boot" "autoDetectRootDevice"];
    default = false;
    description = "
      Whether to find the root device automatically by searching for a
      device with the right label.  If this option is off, then
      <option>boot.rootDevice</option> must be set.
    ";
  }


  {
    name = ["boot" "rootDevice"];
    example = "/dev/hda1";
    description = "
      The device to be mounted on / at system startup.
    ";
  }


  {
    name = ["boot" "readOnlyRoot"];
    default = false;
    description = "
      Whether the root device should be mounted writable.  This should
      be set when booting from CD-ROM.
    ";
  }


  {
    name = ["boot" "rootLabel"];
    description = "
      When auto-detecting the root device (see
      <option>boot.autoDetectRootDevice</option>), this option
      specifies the label of the root device.  Right now, this is
      merely a file name that should exist in the root directory of
      the file system.  It is used to find the boot CD-ROM.
    ";
  }


  {
    name = ["boot" "grubDevice"];
    default = "";
    example = "/dev/hda";
    description = "
      The device on which the boot loader, Grub, will be installed.
      If empty, Grub won't be installed and it's your responsibility
      to make the system bootable.
    ";
  }


  {
    name = ["boot" "kernelParams"];
    default = [
      "selinux=0"
      "apm=on"
      "acpi=on"
      "vga=0x317"
      "console=tty1"
      "splash=verbose"
    ];
    description = "
      The kernel parameters.  If you want to add additional
      parameters, it's best to set
      <option>boot.extraKernelParams</options>.
    ";
  }


  {
    name = ["boot" "extraKernelParams"];
    default = [
    ];
    example = [
      "debugtrace"
    ];
    description = "
      Additional user-defined kernel parameters.
    ";
  }


  {
    name = ["networking" "useDHCP"];
    default = true;
    description = "
      Whether to use DHCP to obtain an IP adress and other
      configuration for all network interfaces that are not manually
      configured.
    ";
  }

  
  {
    name = ["networking" "interfaces"];
    default = [];
    example = [
      { interface = "eth0";
        ipAddress = "131.211.84.78";
        netmask = "255.255.255.128";
        gateway = "131.211.84.1";
      }
    ];
    description = "
      The configuration for each network interface.  If
      <option>networking.useDHCP</option> is true, then each interface
      not listed here will be configured using DHCP.
    ";
  }

  
  {
    name = ["filesystems" "mountPoints"];
    example = [
      { device = "/dev/hda2";
        mountPoint = "/";
      }
    ];
    description = "
      The file systems to be mounted by NixOS.  It must include an
      entry for the root directory (<literal>mountPoint =
      \"/\"</literal>).  This is the file system on which NixOS is (to
      be) installed..
    ";
  }

  
  {
    name = ["services" "syslogd" "tty"];
    default = 10;
    description = "
      The tty device on which syslogd will print important log
      messages.
    ";
  }

      
  {
    name = ["services" "mingetty" "ttys"];
    default = [1 2 3 4 5 6];
    description = "
      The list of tty (virtual console) devices on which to start a
      login prompt.
    ";
  }

      
  {
    name = ["services" "mingetty" "waitOnMounts"];
    default = false;
    description = "
      Whether the login prompts on the virtual consoles will be
      started before or after all file systems have been mounted.  By
      default we don't wait, but if for example your /home is on a
      separate partition, you may want to turn this on.
    ";
  }

  
  {
    name = ["services" "sshd" "enable"];
    default = false;
    description = "
      Whether to enable the Secure Shell daemon, which allows secure
      remote logins.
    ";
  }

  
  {
    name = ["services" "sshd" "forwardX11"];
    default = false;
    description = "
      Whether to enable sshd to forward X11 connections.
    ";
  }

  
]