? <exec-space ?exec-space> [

  # get the Sway environment and exec with it
  ? { argv: ["sway-env-magic-cookie"]
       env: {
        "DBUS_SESSION_BUS_ADDRESS" : ?DBUS_SESSION_BUS_ADDRESS
        "DISPLAY": ?DISPLAY
        "SWAYSOCK" : ?SWAYSOCK
        "WAYLAND_DISPLAY" : ?WAYLAND_DISPLAY
        "XDG_SEAT" : ?XDG_SEAT
        "XDG_SESSION_TYPE" : ?XDG_SESSION_TYPE
      } } [

    # start GUI programs in the Sway environment
    ? <gui ?sym { argv: ?argv }> [
      <run-service <daemon $sym>>
      <daemon $sym {
        argv: $argv,
        env: {
          "DBUS_SESSION_BUS_ADDRESS" : $DBUS_SESSION_BUS_ADDRESS
          "DISPLAY": $DISPLAY
          "SWAYSOCK" : $SWAYSOCK
          "WAYLAND_DISPLAY" : $WAYLAND_DISPLAY
          "XDG_SEAT" : $XDG_SEAT
          "XDG_SESSION_TYPE" : $XDG_SESSION_TYPE
          }
        readyOnStart: #f,
      }>
    ]

    # execute programs in response to handlers
    $exec-space ?? <exec ?argv> $config [
      let ?id = timestamp
      let ?facet = facet
      let ?d = <uri_runner-exec $id $argv>
      <run-service <daemon $d>>
      <daemon $d {
        argv: $argv,
        env: {
          "DBUS_SESSION_BUS_ADDRESS" : $DBUS_SESSION_BUS_ADDRESS
          "DISPLAY": $DISPLAY
          "SWAYSOCK" : $SWAYSOCK
          "WAYLAND_DISPLAY" : $WAYLAND_DISPLAY
          "XDG_SEAT" : $XDG_SEAT
          "XDG_SESSION_TYPE" : $XDG_SESSION_TYPE
          }
        readyOnStart: #f,
        restart: =never,
      }>
      ? <service-state <daemon $d> complete> [$facet ! stop]
      ? <service-state <daemon $d> failed> [$facet ! stop]
    ]

  ]

]