nixos-config/home-manager/roles/systemd-exporter.nix

{ pkgs, ... }:
{
  systemd.user = {
    services.prometheus-systemd-exporter = {
      Unit.Description = "Prometheus systemd exporter";
      Service = {
        ExecStart = "${pkgs.prometheus-systemd-exporter}/bin/systemd_exporter --collector.user";
      };
      Install.WantedBy = [ "default.target" ];
    };
  };
}