[mcstas-users] McStas 3.0 - problem starting mcgui on Ubuntu 20.04

[Richard Wagner]

Dear Peter,

thanks for the fast answer.

With your suggestion below I can start mcgui.

Only downside is that now my Jupyter installation is not working anymore.

But I'll try to find a solution for that.

Best,

Richard


On 03.02.21 11:07, Peter Kjær Willendrup wrote:
> Dear Richard,
>
>
> Based on the ImportError reference to 
> /usr/local/lib/python3.8/dist-packages/, this to me looks like a clash 
> with locally installed Python-modules…
>
> Our Debian-packages rely on the Debian/Ubuntu-provided version of 
> PyQt, Qscintilla etc., you may have installed these earlier as a local 
> version for some other software.
>
> My guess is that if you (as an experiment) rename 
> your /usr/local/lib/python3.8/ folder to e.g. 
> /usr/local/lib/python3.8.GONE mcgui will run just fine.
>
>
>
> Best,
> Peter
>
>
>
>> On 3 Feb 2021, at 10.00, Richard Wagner <wagnerrichard at ill.fr 
>> <mailto:wagnerrichard at ill.fr>> wrote:
>>
>> Hi,
>>
>> just installed McStas 3.0 and have the following problem after an 
>> install on Ubuntu 20.04.
>>
>> with
>> cd  /etc/apt/sources.list.d
>> sudo wgethttp://packages.mccode.org/debian/mccode.list
>> sudo apt-get update
>>
>> sudo apt-get install mcstas-suite-python-ng
>>
>>
>> mcgui wont start and gives the following error message:
>>
>> /usr/bin/mcgui: 14: [[: not found
>> Traceback (most recent call last):
>>   File "<string>", line 1, in <module>
>> ImportError: 
>> /usr/local/lib/python3.8/dist-packages/PyQt5/Qt/lib/libQt5Core.so.5: 
>> version `Qt_5.15' not found (required by 
>> /usr/local/lib/python3.8/dist-packages/PyQt5/Qsci.abi3.so)
>>
>> I'm completely new to the software, so
>> perhaps I'm missing something completely obvious.
>> Any hints would be highly appreciated.
>>
>> thanks in advance
>>
>> Richard
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>
>
>
>
> Peter Kjær Willendrup
> Forskningsingeniør, Specialkonsulent
> Næstformand for DTU Fysik LSU
>
> DTU Physics
>
>
>
>
>
> Technical University of Denmark
>
>
>
>
>
>
> Department of Physics
> Fysikvej
> Building 307
> DK-2800 Kongens Lyngby
> Direct +45 2125 4612
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> pkwi at fysik.dtu.dk <mailto:pkwi at fysik.dtu.dk>
>

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