Hi Emmanuelle,
It didn't work, it seemed my installation was completely messy ...
I wanted for a long time to move to archlinux, so it was the occasion ...

Under arch, the installation was super smooth! and now it works! :-)

thanks again for the help,

Julien


On Monday, May 4, 2015 at 5:55:16 PM UTC+2, Emmanuelle Gouillart wrote:

did it work?

On Mon, May 04, 2015 at 08:41:28AM -0700, Julien Derr wrote:
> thanks a lot !

> On Sunday, May 3, 2015 at 1:30:39 AM UTC+2, stefanv wrote:

>     Hi Julien

>     On 2015-05-02 05:06:05, Julien Derr <julie...@gmail.com> wrote:
>     > I tried your option; with plugin='matplotlib' and still get the
>     > following  error message, so it looks like I have indeed a
>     > problem with a jpeg  decoder, but I checked that   I have the
>     > package libjpeg8 installed already.

>     Your PIL seems broken.  I would completely remove PIL, make sure
>     libjpeg and libjpeg-dev is installed, and then install Pillow
>     instead.

>     Stéfan