[pyngl-talk] A problem on installing PyNIO

Kevin Hallock hallock at ucar.edu
Fri Dec 1 17:40:45 MST 2017

Hi Zhengyu,

There are still some compatibility issues with dependency packages when using the command “conda create -n pynio_pyngl -c conda-forge pynio pyngl” to install PyNIO and PyNGL.

However, we’ve found a workaround that should allow you to install and run both PyNIO and PyNGL:
conda create -n pynio_pyngl -c conda-forge pynio pyngl poppler=0.52 xerces-c=3.1

Hopefully being this verbose will not be necessary in the future, but unfortunately this is the simplest solution available for installing PyNIO/PyNGL using conda at this time.

Please let us know if you encounter any further unexpected behavior.


> On Nov 28, 2017, at 12:07 PM, Kevin Hallock <hallock at ucar.edu> wrote:
> Hi Zhengyu,
> I’m sorry to hear you’re experiencing difficulties getting PyNIO installed. We are aware of this issue, and members of the conda-forge project are currently working to fix it:
> https://github.com/conda-forge/pynio-feedstock/issues/31 <https://github.com/conda-forge/pynio-feedstock/issues/31>
> https://github.com/conda-forge/pynio-feedstock/pull/32 <https://github.com/conda-forge/pynio-feedstock/pull/32>
> Thank you for letting us know about this! I will write to you again as soon as we’ve confirmed that the issue is fixed.
> Kevin
>> On Nov 26, 2017, at 10:05 PM, zhengyu <zhengyunuist at gmail.com <mailto:zhengyunuist at gmail.com>> wrote:
>> Dear NCAR manager, 
>>   I respond to the email for subscribing.
>>   Then I send my request.
>>  Sorry to bother you, I am a postgraduate student in department of Atmosphere Physics, Nanjing University of Information and Technology, China. Currently I encountered a problem when I installed PyNIO package for anaconda2 on my centos7 virtual machine.
>>     I installed PyNIO via “conda” , I used this “conda install --channel conda-forge pynio pyngl” to install the packages in terminal,  there was no errors occurred during my installation,  I think I successfully installed the package and I'm able to use this package, however when I finish my installation and open anaconda to test PyNGL and PyNIO, I found a error that when I input “import Nio” in python, It shows that  “ImportError: libpoppler.so.66: cannot open shared object file: No such file or directory “, but when I input “import Ngl”,  there is nothing wrong happened ,  you can see below picture for details.
>>    Then I check if the poppler package have installed,  and  I found poppler package have installed, I do not know why happened this. I really need your help,  my system version is “Linux localhost.localdomain 3.10.0-514.26.1.el7.x86_64 #1 SMP Thu Jun 29 16:05:25 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux”, I have printed the “conda list”,  you can see  see attached for details .
>> I am looking forward your reply. I'll appreciate it.
>>     Best regards!
>>     Zhengyu
>>     Nanjing University of Information and Technology, China.
>> <BE537BF6DA4A47ECA9F8139201DC0EFD.png>
>> <condalist.txt><error.png><BE537BF6DA4A47ECA9F8139201DC0EFD.png>_______________________________________________
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