Adds programs.mosh.withUtempter (default: true). The option enables -with-utempter for mosh, allowing it to write to /var/run/utmp and thus making connected sessions appear in the output of `who -a`. For that, a guid-wrapper is required. Also, the path to the `utempter` was hardcoded in the resulting binary until now (so it could never been found), thus, libutempter was patched accordingly to point to /run/wrappers/bin/utempter which at least works when the wrapper is configured.
		
			
				
	
	
		
			44 lines
		
	
	
		
			1.1 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			44 lines
		
	
	
		
			1.1 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
{ config, lib, pkgs, ... }:
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with lib;
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let
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  cfg  = config.programs.mosh;
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in
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{
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  options.programs.mosh = {
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    enable = mkOption {
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      description = ''
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        Whether to enable mosh. Note, this will open ports in your firewall!
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      '';
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      default = false;
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      type = lib.types.bool;
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    };
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    withUtempter = mkOption {
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      description = ''
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        Whether to enable libutempter for mosh.
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        This is required so that mosh can write to /var/run/utmp (which can be queried with `who` to display currently connected user sessions).
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        Note, this will add a guid wrapper for the group utmp!
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      '';
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      default = true;
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      type = lib.types.bool;
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    };
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  };
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  config = mkIf cfg.enable {
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    environment.systemPackages = with pkgs; [ mosh ];
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    networking.firewall.allowedUDPPortRanges = [ { from = 60000; to = 61000; } ];
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    security.wrappers = mkIf cfg.withUtempter {
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      utempter = {
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        source = "${pkgs.libutempter}/lib/utempter/utempter";
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        owner = "nobody";
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        group = "utmp";
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        setuid = false;
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        setgid = true;
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      };
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    };
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  };
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}
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