38 lines
		
	
	
		
			763 B
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			38 lines
		
	
	
		
			763 B
		
	
	
	
		
			Nix
		
	
	
	
	
	
| { config, lib, ... }:
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| 
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| with lib;
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| 
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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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|     systemd.enableEmergencyMode = mkOption {
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|       default = true;
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|       type = types.bool;
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|       description = ''
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|         Whether to enable emergency mode, which is an
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|         <command>sulogin</command> shell started on the console if
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|         mounting a filesystem fails.  Since some machines (like EC2
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|         instances) have no console of any kind, emergency mode doesn't
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|         make sense, and it's better to continue with the boot insofar
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|         as possible.
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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 = {
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| 
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|     systemd.additionalUpstreamSystemUnits = optionals
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|       config.systemd.enableEmergencyMode [
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|         "emergency.target" "emergency.service"
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|       ];
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| 
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|   };
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| 
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| }
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