97 lines
2.2 KiB
Nix
97 lines
2.2 KiB
Nix
# This module includes the NixOS man-pages in the system environment,
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# and optionally starts a browser that shows the NixOS manual on one
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# of the virtual consoles. The latter is useful for the installation
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# CD.
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{pkgs, config, options, ...}:
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let
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inherit (pkgs.lib) mkOption mkIf types;
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cfg = config.services.nixosManual;
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manual = import ../../../doc/manual {
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inherit (cfg) revision;
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inherit pkgs options;
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};
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in
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{
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options = {
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services.nixosManual.enable = mkOption {
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default = true;
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description = ''
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Whether to build the NixOS manual pages.
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'';
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};
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services.nixosManual.showManual = mkOption {
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default = false;
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description = ''
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Whether to show the NixOS manual on one of the virtual
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consoles.
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'';
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};
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services.nixosManual.ttyNumber = mkOption {
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default = "8";
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description = ''
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Virtual console on which to show the manual.
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'';
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};
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services.nixosManual.browser = mkOption {
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default = "${pkgs.w3m}/bin/w3m";
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description = ''
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Browser used to show the manual.
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'';
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};
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services.nixosManual.revision = mkOption {
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default = "local";
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type = types.uniq types.string;
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description = ''
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Revision of the targeted source file. This value can either be
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<literal>"local"</literal>, <literal>"HEAD"</literal> or any
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revision number embedded in a string.
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'';
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};
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};
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config = mkIf cfg.enable {
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environment.systemPackages = [manual];
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boot.extraTTYs = mkIf cfg.showManual [cfg.ttyNumber];
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services.extraJobs = mkIf cfg.showManual (pkgs.lib.singleton
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{ name = "nixos-manual";
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job = ''
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description "NixOS manual"
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start on udev
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stop on shutdown
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respawn ${cfg.browser} ${manual}/share/doc/nixos/manual.html \
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< /dev/tty${toString cfg.ttyNumber} > /dev/tty${toString cfg.ttyNumber} 2>&1
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'';
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});
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services.ttyBackgrounds.specificThemes = mkIf cfg.showManual
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[ { tty = cfg.ttyNumber;
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theme = pkgs.themes "green";
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}
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];
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services.mingetty.helpLine = mkIf cfg.showManual
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"\nPress <Alt-F${toString cfg.ttyNumber}> for the NixOS manual.";
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};
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}
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