nixpkgs/modules/services/misc/nixos-manual.nix
Eelco Dolstra 262ddf0854 * Move the manual/Rogue from virtual consoles 7/8 to 8/9
respectively so that the X server can run on 7.

svn path=/nixos/branches/modular-nixos/; revision=15924
2009-06-10 12:53:45 +00:00

105 lines
2.1 KiB
Nix

{pkgs, config, ...}:
# Show the NixOS manual on tty8
# Originally used only by installation CD
let
inherit (pkgs.lib) mkOption;
options = {
services = {
showManual = {
enable = mkOption {
default = false;
description = "
Whether to show the NixOS manual on one of the virtual
consoles.
";
};
ttyNumber = mkOption {
default = "8";
description = "
Virtual console on which to show the manual.
";
};
browser = mkOption {
default = "${pkgs.w3m}/bin/w3m";
description = ''
Browser used to show the manual.
'';
};
manualFile = mkOption {
# Note: we can't use a default here (see below), since it
# causes an infinite recursion building the manual.
default = null;
description = "
NixOS manual HTML file
";
};
}; # showManual
}; # services
};
in
let
inherit (config.services.showManual) enable ttyNumber browser manualFile;
realManualFile =
if manualFile == null then
# We could speed up the evaluation of the manual expression by
# providing it the optionDeclarations of the current
# configuration.
"${import ../../../doc/manual {inherit pkgs;}}/manual.html"
else
manualFile;
inherit (pkgs.lib) mkIf mkThenElse;
in
mkIf enable {
require = [
options
];
boot = {
extraTTYs = [ ttyNumber ];
};
services = {
extraJobs = [{
name = "nixos-manual";
job = ''
description "NixOS manual"
start on udev
stop on shutdown
respawn ${browser} ${realManualFile} < /dev/tty${toString ttyNumber} > /dev/tty${toString ttyNumber} 2>&1
'';
}];
ttyBackgrounds = {
specificThemes = [{
tty = ttyNumber;
theme = pkgs.themes "green";
}];
};
mingetty = {
helpLine = mkThenElse {
thenPart = "\nPress <Alt-F${toString ttyNumber}> for the NixOS manual.";
elsePart = "";
};
};
};
}