rednotebook wouldn't open - PyYAML not found

[Rainer Parrales]

$ lsb_release -rd
  Description: Ubuntu 16.04.3 LTS
  Release: 16.04

$ apt-cache policy rednotebook
  rednotebook:
    Instalados: 2.1.4-0~201708081233~ubuntu16.04.1
    Candidato: 2.1.4-0~201708081233~ubuntu16.04.1
    Tabla de versión:
   *** 2.1.4-0~201708081233~ubuntu16.04.1 500
          500 http://ppa.launchpad.net/rednotebook/stable/ubuntu xenial/main amd64 Packages
          500 http://ppa.launchpad.net/rednotebook/stable/ubuntu xenial/main i386 Packages
          100 /var/lib/dpkg/status
       1.10.1-1 500
          500 http://ni.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
          500 http://ni.archive.ubuntu.com/ubuntu xenial/universe i386 Packages

After the third most recent upgrade (2.1.2), Rednotebook wouldn't open and disappeared from the Launcher.

No warning or any other clue was provided on screen as to what was the problem.

The rednotebook.log file shows:

2017-08-08 21:13:49,275 INFO Writing log to file "/home/rainer/.rednotebook/rednotebook.log"
2017-08-08 21:13:49,275 INFO System encoding: utf-8
2017-08-08 21:13:49,276 INFO Language code: es_NI
2017-08-08 21:13:49,448 ERROR PyYAML not found. Please install it (python3-yaml).

I am not aware of having uninstalled python3-yaml (how can I check?), but if I did, it can only have happened via 'apt autoremove' - but being a requisite for rednotebook it shouldn't have been included for autoremove.

If it wasn't installed beforehand, rednotebook should pass the package name to apt for additional install.

[Jendrik Seipp (jendrikseipp)]

Thanks for reporting this. It should be fixed in version 2.1.5.