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* Prototyping a bit: first class options. We want the configuration

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of NixOS to be specified externally from the main Nix expressions
  (since an installation would be hard to maintain if users started
  editing the NixOS expressions directory).  But to make that
  user-friendly we need:

  - Hierarchical options (just like the Nixpkgs configuration).
  - Option descriptions from which documentation can be generated.
  - Validation (e.g., does each option exist? does it have a valid
    value?).
  - The option declarations should be inside the Nix expressions to
    which they are relevant (rather than, say, one big file with option
    declarations).

svn path=/nixu/trunk/; revision=7148
This commit is contained in:
Eelco Dolstra 2006-11-27 15:07:46 +00:00
parent 5bc78ac151
commit e68fc42aa3
1 changed files with 97 additions and 0 deletions
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[
(option {
name = ["networking" "hostname"];
default = "nixos";
description = "The name of the machine."
})
(option {
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.
"
})
(option {
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.
"
})
(option {
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..
";
})
(option {
name = ["services" "syslogd" "tty"];
default = 10;
description = "
The tty device on which syslogd will print important log
messages.
";
})
(option {
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.
";
})
(option {
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.
";
})
(option {
name = ["services" "sshd" "enable"];
default = false;
description = "
Whether to enable the Secure Shell daemon, which allows secure
remote logins.
";
})
(option {
name = ["services" "sshd" "forwardX11"];
default = false;
description = "
Whether to enable sshd to forward X11 connections.
";
})
]