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nixpkgs/nixos/modules/programs/mosh.nix
Lenz Weber 7c34c28cfa nixos/programs.mosh: refactor
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.
2018-06-08 20:57:16 +02:00

44 lines
1.1 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.programs.mosh;
in
{
options.programs.mosh = {
enable = mkOption {
description = ''
Whether to enable mosh. Note, this will open ports in your firewall!
'';
default = false;
type = lib.types.bool;
};
withUtempter = mkOption {
description = ''
Whether to enable libutempter for mosh.
This is required so that mosh can write to /var/run/utmp (which can be queried with `who` to display currently connected user sessions).
Note, this will add a guid wrapper for the group utmp!
'';
default = true;
type = lib.types.bool;
};
};
config = mkIf cfg.enable {
environment.systemPackages = with pkgs; [ mosh ];
networking.firewall.allowedUDPPortRanges = [ { from = 60000; to = 61000; } ];
security.wrappers = mkIf cfg.withUtempter {
utempter = {
source = "${pkgs.libutempter}/lib/utempter/utempter";
owner = "nobody";
group = "utmp";
setuid = false;
setgid = true;
};
};
};
}