anchor.diff:      serviceToUnit
       socketToUnit
       timerToUnit
  -    pathToUnit
  -    ;
  +    pathToUnit;
   
     upstreamUserUnits = [
       "app.slice"
  
positive.code: { config, lib, pkgs, utils, ... }:
  with utils;
  with systemdUtils.unitOptions;
  with lib; let
    cfg = config.systemd;
  
    systemd = cfg.package;
  
    inherit
      (systemdUtils.lib)
  
negative.code:         wantedBy = ["timers.target"];
          timerConfig.OnCalendar = service.startAt;
        })
        (filterAttrs (name: service: service.startAt != []) cfg.services);
  
      # Provide the systemd-user PAM service, required to run systemd
      # user instances.
  