[Qgis-developer] Plugin requirements

[Arnaud Morvan]

Note that owslib is distributed with QGIS so you can use :

from owslib.etree import etree

See here for more info : 
https://github.com/geopython/OWSLib/blob/840284bdd1d5e335e7a0d5d276afe4d0b34ac4cf/owslib/etree.py#L36

Arnaud Morvan
Ingénieur logiciel
Tél: +33 (0)4 58 48 20 32

Camptocamp France SAS
Savoie Technolac, BP 352
73377 Le Bourget du Lac Cedex
http://www.camptocamp.com

Le 08/12/2016 16:11, Arnaud Morvan a écrit :
>
> Hello Xavier,
>
> here we are used to create a virtualenv at build time (in make build 
> or make install target), in the plugin folder,
> the virtual env site-package folder is added to the python sys path in 
> plugin __init__.py file before the class factory.
>
> Note that it is necessary to add this virtualenv to the plugin package 
> (in make package target for example).
>
> With this the plugin package can be big, but is self contained.
>
> Cheers
>
> Arnaud Morvan
> Ingénieur logiciel
> Tél: +33 (0)4 58 48 20 32
>
> Camptocamp France SAS
> Savoie Technolac, BP 352
> 73377 Le Bourget du Lac Cedex
> http://www.camptocamp.com
>
> Le 07/12/2016 15:22, Luigi Pirelli a écrit :
>> Hi Xavier
>>
>> 1) pip can be installed on OSGeo4W (many references on the gis stack
>> exchange and on the web)
>> 2) paver do nothing other than creating python eggs or now you can use
>> wheel format, then setting pythonpath starting the plugin allow you to
>> load module from local modules... paver is a utility to simplify
>> packaging
>>
>> cheers
>>
>> Luigi Pirelli
>>
>> ************************************************************************************************** 
>>
>> * Boundless QGIS Support/Development: lpirelli AT boundlessgeo DOT com
>> * LinkedIn: https://www.linkedin.com/in/luigipirelli
>> * Stackexchange: http://gis.stackexchange.com/users/19667/luigi-pirelli
>> * GitHub: https://github.com/luipir
>> * Mastering QGIS 2nd Edition:
>> * 
>> https://www.packtpub.com/big-data-and-business-intelligence/mastering-qgis-second-edition
>> ************************************************************************************************** 
>>
>>
>>
>> On 7 December 2016 at 10:44, Xavier Barnada <xbarnada at gisce.net> wrote:
>>> Hi Alessandro,
>>>
>>> Thank you for the example, I will study paver to see how it works
>>>
>>> Cheers
>>>
>>> 2016-12-07 9:49 GMT+01:00 Alessandro Pasotti <apasotti at gmail.com>:
>>>> On Wed, Dec 7, 2016 at 9:43 AM, Xavier Barnada <xbarnada at gisce.net> 
>>>> wrote:
>>>>> Hi all,
>>>>>
>>>>> I been working on a plugin that uses another python requirements like
>>>>> lxml.
>>>>>
>>>>> The problem it's that I solved the requirements problem on Linux 
>>>>> calling
>>>>> pip command but this don't work on QGIS with Windows because 
>>>>> Windows don't
>>>>> incorporate python or pip.
>>>>>
>>>>> In my opinion QGIS API should provide a way to install packages but i
>>>>> supose that it's not so easy as I imagine.
>>>>>
>>>>> How do you use to solve this problem?  There is any example of it?  I
>>>>> searched it on the documentation and don't appear any reference 
>>>>> about how to
>>>>> do it.
>>>>>
>>>>> Best reggards
>>>>> Xavier Barnada
>>>>>
>>>>>
>>>>
>>>> Hi Xavier!
>>>>
>>>> We've considered adding a mechanism for plugin dependencies, (I've
>>>> recently added a metadata for that purpose) but this seems a bit 
>>>> difficult
>>>> to work cross-platform, BTW I'd be very happy to see some efforts 
>>>> in that
>>>> area.
>>>>
>>>> What we normally do is to package and ship dependencies with the 
>>>> plugin
>>>> itself, you can have a look to this example:
>>>> https://github.com/boundlessgeo/qgis-geoserver-plugin/blob/master/pavement.py#L48 
>>>>
>>>>
>>>> Cheers.
>>>>
>>>> -- 
>>>> Alessandro Pasotti
>>>> w3:   www.itopen.it
>>>
>>>
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