 29027fd1e1
			
		
	
	
		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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| 
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| { config, lib, pkgs, ... }:
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| 
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| with lib;
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| 
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| let
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| 
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|   cfg = config.services.rogue;
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| 
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| in
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| 
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| {
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|   ###### interface
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| 
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|   options = {
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| 
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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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| 
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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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|   };
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| 
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| 
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|   ###### implementation
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| 
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|   config = mkIf cfg.enable {
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| 
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|     boot.extraTTYs = [ cfg.tty ];
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| 
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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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| 
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| }
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