LADI (control center, log file viewer) doesn't work

[Peter Lapets]

Opening settings manager and clicking on LADI Control Center or LADI Log File Viewer does nothing.

Running "ladi-control-center" and "ladi-system-log" yields similar results:

p13rrot@p13rrot-Inspiron-3543:~$ ladi-control-center
Traceback (most recent call last):
  File "/usr/bin/ladi-control-center", line 28, in <module>
    from laditools import _gettext_domain
  File "/usr/lib/python2.7/dist-packages/laditools/__init__.py", line 27, in <module>
    from .ladish import LadishProxy, LadishStatusType, LadishProxyError, check_ladish
  File "/usr/lib/python2.7/dist-packages/laditools/ladish.py", line 34, in <module>
    "STUDIO_RUNNING")
  File "/usr/lib/python2.7/dist-packages/enum/__init__.py", line 325, in __call__
    return cls._create_(value, names, module=module, type=type)
  File "/usr/lib/python2.7/dist-packages/enum/__init__.py", line 433, in _create_
    enum_class = metacls.__new__(metacls, class_name, bases, classdict)
  File "/usr/lib/python2.7/dist-packages/enum/__init__.py", line 154, in __new__
    member_type, first_enum = metacls._get_mixins_(bases)
  File "/usr/lib/python2.7/dist-packages/enum/__init__.py", line 467, in _get_mixins_
    issubclass(base, Enum) and
TypeError: issubclass() arg 1 must be a class

and

p13rrot@p13rrot-Inspiron-3543:~$ ladi-system-log
Traceback (most recent call last):
  File "/usr/bin/ladi-system-log", line 32, in <module>
    from laditools import _gettext_domain
  File "/usr/lib/python2.7/dist-packages/laditools/__init__.py", line 27, in <module>
    from .ladish import LadishProxy, LadishStatusType, LadishProxyError, check_ladish
  File "/usr/lib/python2.7/dist-packages/laditools/ladish.py", line 34, in <module>
    "STUDIO_RUNNING")
  File "/usr/lib/python2.7/dist-packages/enum/__init__.py", line 325, in __call__
    return cls._create_(value, names, module=module, type=type)
  File "/usr/lib/python2.7/dist-packages/enum/__init__.py", line 433, in _create_
    enum_class = metacls.__new__(metacls, class_name, bases, classdict)
  File "/usr/lib/python2.7/dist-packages/enum/__init__.py", line 154, in __new__
    member_type, first_enum = metacls._get_mixins_(bases)
  File "/usr/lib/python2.7/dist-packages/enum/__init__.py", line 467, in _get_mixins_
    issubclass(base, Enum) and
TypeError: issubclass() arg 1 must be a class

[Peter Lapets (lapets94)]

p13rrot@p13rrot-Inspiron-3543:~$ uname -a
Linux p13rrot-Inspiron-3543 3.19.0-56-lowlatency #62~14.04.1-Ubuntu SMP PREEMPT Fri Mar 11 12:05:41 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

[Ross Gammon (rosco2)]

This looks like Debian Bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=795444

This is caused by a clash between the python-enum package and the python-enum34 package. It has been fixed by porting laditools to python-enum34 in the soon to be released Ubuntu Xenial 16.04.

As a work-around for now, you could remove the python-enum34 package. But this might also remove other applications that you need.

We could probably backport part of the patch used in https://bugs.launchpad.net/ubuntu-seeds/+bug/1498345, but it will probably have to wait until after the Xenial release (unless someone else finds the time).