Mopidy extension not loaded

I installed several extension, mopidy-moped, mopidy-gmusic, mopidy-spotify, mopidy-spotify-tunigo
I installed using "pip install mopidy-xxx"
However mopidy running without all extension loaded
I’m scratching my head, why?

#> cat /var/log/mopidy/mopidy.log
2016-12-30 19:07:48,087 INFO [32347:MainThread] mopidy.main: Starting Mopidy 2.0.1
2016-12-30 19:07:48,147 INFO [32347:MainThread] mopidy.config: Loading config from builtin defaults
2016-12-30 19:07:48,154 INFO [32347:MainThread] mopidy.config: Loading config from /etc/mopidy/mopidy.conf
2016-12-30 19:07:48,169 INFO [32347:MainThread] mopidy.config: Loading config from command line options
2016-12-30 19:07:48,271 INFO [32347:MainThread] mopidy.main: Enabled extensions: mpd, http, stream, softwaremixer, file, local
2016-12-30 19:07:48,272 INFO [32347:MainThread] mopidy.main: Disabled extensions: m3u
2016-12-30 19:07:48,516 INFO [32347:MainThread] mopidy.commands: Starting Mopidy mixer: SoftwareMixer
2016-12-30 19:07:48,524 INFO [32347:MainThread] mopidy.commands: Starting Mopidy audio
2016-12-30 19:07:48,532 INFO [32347:MainThread] mopidy.commands: Starting Mopidy backends: StreamBackend, FileBackend, LocalBackend
2016-12-30 19:07:48,555 WARNING [32347:MainThread] The stream/protocols config value includes the “file” protocol. “file” playback is now handled by Mopidy-File. Please remove it from the stream/protocols config.
2016-12-30 19:07:48,595 INFO [32347:MainThread] mopidy.local.json: No local library metadata cache found at /var/lib/mopidy/local/library.json.gz. Please run mopidy local scan to index your local music library. If you do not have a local music collection, you can disable the local backend to hide this message.
2016-12-30 19:07:48,597 INFO [32347:MainThread] mopidy.local.library: Loaded 0 local tracks using json
2016-12-30 19:07:48,598 INFO [32347:Audio-2] Audio output set to "alsasink device=hw:1,0 buffer-time=200000 latency-time=10000"
2016-12-30 19:07:48,615 INFO [32347:MainThread] mopidy.commands: Starting Mopidy core
2016-12-30 19:07:48,688 INFO [32347:MainThread] mopidy.commands: Starting Mopidy frontends: MpdFrontend, HttpFrontend
2016-12-30 19:07:48,695 INFO [32347:MainThread] MPD server running at [::ffff:]:6600
2016-12-30 19:07:48,704 INFO [32347:HttpFrontend-9] HTTP server running at [::ffff:]:6680
2016-12-30 19:07:48,705 INFO [32347:MainThread] mopidy.commands: Starting GLib mainloop
2016-12-30 19:07:48,887 INFO [32347:MpdSession-10] mopidy.mpd.session: New MPD connection from [::ffff:]:57855

#> pip list | grep Mopidy
Mopidy (2.0.1)
Mopidy-GMusic (2.0.0)
Mopidy-Moped (0.7.0)
Mopidy-Spotify (3.0.0)
Mopidy-Spotify-Tunigo (1.0.0)

I’d assume maybe a missing dependency since you did it via pip?