[Qgis-developer] Plugin requirements

[Régis Haubourg]

Hi Arnaud,
does virtualenv works in osgeo4w?
Régis

2016-12-08 16:11 GMT+01:00 Arnaud Morvan <arnaud.morvan at camptocamp.com>:

>
> 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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