nixpkgs/nixos/modules/services/ttys/gpm.nix

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.gpm;
in
{
###### interface
options = {
services.gpm = {
enable = mkOption {
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type = types.bool;
default = false;
description = ''
Whether to enable GPM, the General Purpose Mouse daemon,
which enables mouse support in virtual consoles.
'';
};
protocol = mkOption {
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type = types.str;
default = "ps/2";
description = "Mouse protocol to use.";
};
};
};
###### implementation
config = mkIf cfg.enable {
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systemd.services.gpm =
{ description = "Console Mouse Daemon";
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wantedBy = [ "multi-user.target" ];
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requires = [ "dev-input-mice.device" ];
after = [ "dev-input-mice.device" ];
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serviceConfig.ExecStart = "@${pkgs.gpm}/sbin/gpm gpm -m /dev/input/mice -t ${cfg.protocol}";
serviceConfig.Type = "forking";
serviceConfig.PIDFile = "/run/gpm.pid";
};
};
}