X2Go Bug report logs - #1059
pyhoca-gui can't be installed on OpenSUSE from project repository, OBS repository version throws errors

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Package: pyhoca-gui; Maintainer for pyhoca-gui is X2Go Developers <x2go-dev@lists.x2go.org>; Source for pyhoca-gui is src:pyhoca-gui.

Reported by: "Albrecht Kolthoff" <kolthoff@gmx.net>

Date: Sun, 10 Jul 2016 13:20:02 UTC

Severity: normal

Tags: not-a-bug

Found in version 0.5.0.6-0.0

Done: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Bug is archived. No further changes may be made.

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Subject: Bug#1059: [X2Go-Dev] Bug#1059: pyhoca-gui can't be installed on OpenSUSE from project repository, OBS repository version throws errors
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References: <20160714104226.Horde.2HEK4JCEizthWVzwY2V4Y43@mail.das-netzwerkteam.de>
To: 1059@bugs.x2go.org, "Mike Gabriel" <mike.gabriel@das-netzwerkteam.de>
Date: Mon, 18 Jul 2016 20:23:48 +0200
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From: "Albrecht Kolthoff" <kolthoff@gmx.net>
Message-ID: <op.yks6pywv0sy1zw@tantalus.sisyphus>
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Today a package update from an openSUSE repository has been installed here as python-paramiko-2.0.0-45.1 and now pyhoca-gui is running without these error messages and apparently fully functional.

Problem solved, case closed. Thank you for your time and explanation.


On Thu, 14 Jul 2016 12:42:26 +0200, Mike Gabriel <mike.gabriel@das-netzwerkteam.de> wrote:

> Control: tags -1 not-a-bug
>
> On  So 10 Jul 2016 15:12:19 CEST, Albrecht Kolthoff wrote:
>
>> Package: pyhoca-gui
>> Version: 0.5.0.6-0.0
>>
>>
>> While the x2goserver and x2goclient packages are running fine on my
>> machines (server: OpenSUSE Leap 42.1, client: OpenSUSE 13.2), the
>> pyhoca-gui package can't be installed from the x2go repository:
>> http://packages.x2go.org/opensuse/13.2/main/x86_64/
>>
>> The same applies to the version in the heuler repository which
>> contains nightly builds, as far as I understand. In both cases the
>> package carries a dependency on python-wxWidgets-2_9 which can't be
>> fulfilled by the OpenSUSE repositories; these offer only the 3_0 and
>> alternatively the 2_8 packages.
>>
>> The OpenSUSE Build service version (which is some minor versions
>> behind the current ones on the x2go project server) actually has a
>> 3_0 dependency (instead of 2_9) and can be installed:
>> http://download.opensuse.org/repositories/X11:/RemoteDesktop:/x2go/openSUSE_13.2/
>>
>> But: this version refuses to run. When started from a terminal
>> command line, it throws these errors:
>>
>> ak@tantalus:~> pyhoca-gui
>> Traceback (most recent call last):
>>   File "/usr/bin/pyhoca-gui", line 35, in <module>
>>     from pyhoca.wxgui.launcher import PyHocaGUI_Launcher
>>   File "/usr/lib/python2.7/site-packages/pyhoca/wxgui/launcher.py",
>> line 38, in <module>
>>     from x2go import X2GOCLIENT_OS
>>   File "/usr/lib/python2.7/site-packages/x2go/__init__.py", line
>> 189, in <module>
>>     from defaults import X2GOCLIENT_OS
>>   File "/usr/lib/python2.7/site-packages/x2go/defaults.py", line
>> 388, in <module>
>>     RSAHostKey = paramiko.RSAKey.generate(RSAKEY_STRENGTH)
>>   File "/usr/lib/python2.7/site-packages/paramiko/rsakey.py", line
>> 156, in generate
>>     public_exponent=65537, key_size=bits, backend=default_backend()
>>   File
>> "/usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/__init__.py", line 35, in
>> default_backend
>>     _default_backend = MultiBackend(_available_backends())
>>   File
>> "/usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/__init__.py", line 22, in
>> _available_backends
>>     "cryptography.backends"
>> AttributeError: 'EntryPoint' object has no attribute 'resolve'
>>
>> Which leads to the situation, that pyhoca-gui can't be run on
>> OpenSUSE at the moment. Which I regret.
>
> This seems to be an issue buried in Python Paramiko and they way it is
> packaged for openSUSE. PyHoca-GUI relies on a working Paramiko Python
> module. What it does above is
>
>    paramiko.RSAKey.generate(RSAKEY_STRENGTH)
>
> And this call somehow fails. Please get this fixed for your distro and
> then pyhoca-gui will (hopefully) work.
>
> Mike


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