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|
{pkgs, config}:
# Show the NixOS manual on tty7
# 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 the tty7
";
};
ttyNumber = mkOption {
default = "7";
description = "
TTY number name to show the manual on
";
};
browserPackage = mkOption {
default = pkgs.w3m;
description = "
Package containing the browser to be used
";
};
browserCommand = mkOption {
default = "bin/w3m";
description = "
Command (command path is relative to browserPackage) to run the browser
";
};
manualFile = mkOption {
default = null;
description = "
NixOS manual HTML file
";
};
};
};
};
inherit(pkgs.lib) optional;
inherit (config.services.showManual) enable ttyNumber browserPackage browserCommand
manualFile;
realManualFile = if manualFile == null then
(import ../doc/manual {nixpkgs = pkgs;})+"/manual.html"
else manualFile;
in
{
require = [
options
];
boot = {
extraTTYs = optional enable ttyNumber;
};
services = {
extraJobs = optional enable {
name = "showManual";
job = ''
description "NixOS manual"
start on udev
stop on shutdown
respawn ${browserPackage}/${browserCommand} ${realManualFile} < /dev/tty${toString ttyNumber} > /dev/tty${toString ttyNumber} 2>&1
'';
};
ttyBackgrounds = {
specificThemes = optional enable {
tty = ttyNumber;
theme = pkgs.themes "green";
};
};
mingetty = {
helpLine = if enable then "\nPress <Alt-F${toString ttyNumber}> for NixOS manual." else "";
};
};
}
|