forked from mirrors/nixpkgs
29027fd1e1
Using pkgs.lib on the spine of module evaluation is problematic because the pkgs argument depends on the result of module evaluation. To prevent an infinite recursion, pkgs and some of the modules are evaluated twice, which is inefficient. Using ‘with lib’ prevents this problem.
62 lines
1.1 KiB
Nix
62 lines
1.1 KiB
Nix
# Execute the game `rogue' on tty 9. Mostly used by the NixOS
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# installation CD.
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{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.rogue;
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in
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{
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###### interface
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options = {
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services.rogue.enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to enable the Rogue game on one of the virtual
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consoles.
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'';
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};
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services.rogue.tty = mkOption {
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type = types.str;
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default = "tty9";
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description = ''
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Virtual console on which to run Rogue.
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'';
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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boot.extraTTYs = [ cfg.tty ];
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systemd.services.rogue =
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{ description = "Rogue dungeon crawling game";
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wantedBy = [ "multi-user.target" ];
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serviceConfig =
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{ ExecStart = "${pkgs.rogue}/bin/rogue";
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StandardInput = "tty";
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StandardOutput = "tty";
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TTYPath = "/dev/${cfg.tty}";
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TTYReset = true;
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TTYVTDisallocate = true;
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Restart = "always";
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};
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};
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};
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}
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