Exposing dbus interface and using it inside the same snap

[Sergey Borovkov]

Hi, I am using this code:

apps:
  playlist:
    command: usr/bin/playlist-service.sh
    daemon: simple
    plugs: [network-bind, network]
    slots: [playlist-dbus-server]

  websocket:
    command: usr/bin/websocket-service.sh
    daemon: simple
    plugs: [network-bind, network, playlist-dbus-client]

slots:
  playlist-dbus-server:
    interface: dbus
    name: com.screenly.playlist
    bus: system

plugs:
  playlist-dbus-client:
    interface: dbus
    name: com.screenly.playlist
    bus: system

After doing snap installl --devmode screenly.snap snapd prints out this
error:
2017-02-13T21:48:28Z INFO snap "screenly-client" has bad plugs or slots:
dbus (cannot find attribute 'bus')

All of this happens with snapd from the proposed repository:

root at ubuntu:/home/ubuntu# snap --version
snap 2.22.2
snapd 2.22.2
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