matplotlib-devel Mailing List for matplotlib

Well, if Freetype were only distributed under the GPL, you couldn't
distribute matplotlib in binary form without providing the source code.
However, Freetype is distributed under more than one license. (see:
https://www.freetype.org/license.html )
Because it's distributed under a BSD-style license in addition to the GPL,
it can be distributed in binary form, subject to an accreditation clause:
http://git.savannah.gnu.org/cgit/freetype/freetype2.git/tree/docs/FTL.TXT
In the past, I have gotten approval from corporate lawyers at a very large
company to use freetype (and matplotlib) in an application that was being
distributed in binary form. The dual-licensing of freetype was key in that
particular case.
Or that's my take on it, anyway. I'm not a Lawyer, so don't consider this
legal advice in any way.
Cheers!
-Joe
On Fri, Feb 17, 2017 at 4:52 PM, Paul Hobson <pmh...@gm...> wrote:
> Chad,
>
> My recollections is that matplotlib doesn't distribute the source code to
> FreeType, it only uses it as a dependency. As such, MPL is in the clear
> with its more permissive licensing.
> -Paul
>
> On Fri, Feb 17, 2017 at 12:45 PM, CAB <ca...@ya...> wrote:
>
>> Hi, All,
>>
>> I just went to install matplotlib version 2.0.0, and it has a dependency
>> called "freetype". This software appears to be licensed under GPL3. My
>> reading of that latter license is that, if someone wanted to distribute a
>> compiled version of a program requiring matplotlib, that entire program
>> would fall under the GPL3 license. I'm sure that would be a non-starter
>> for many, many projects.
>>
>> Does anyone have any takes on this?
>>
>> Chad
>>
>> ------------------------------------------------------------
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>>
>
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>
>

Chad,
My recollections is that matplotlib doesn't distribute the source code to
FreeType, it only uses it as a dependency. As such, MPL is in the clear
with its more permissive licensing.
-Paul
On Fri, Feb 17, 2017 at 12:45 PM, CAB <ca...@ya...> wrote:
> Hi, All,
>
> I just went to install matplotlib version 2.0.0, and it has a dependency
> called "freetype". This software appears to be licensed under GPL3. My
> reading of that latter license is that, if someone wanted to distribute a
> compiled version of a program requiring matplotlib, that entire program
> would fall under the GPL3 license. I'm sure that would be a non-starter
> for many, many projects.
>
> Does anyone have any takes on this?
>
> Chad
>
> ------------------------------------------------------------
> ------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>

It appears that the build of matplotlib in conda-forge does not require
pyqt5:
https://github.com/conda-forge/matplotlib-feedstock/blob/master/recipe/meta.yaml
So in your case, I would do:
conda remove pyqt5 matplotlib
conda install --channel=conda-forge matplotlib
On Thu, Feb 2, 2017 at 8:48 AM, Benjamin Root <ben...@gm...> wrote:
> no, pyqt5 is not a dependency for matplotlib. this looks like a conda
> packaging issue.
>
> Side note: the sourceforge mailing list is deprecated. Please use the
> python.org version instead (you'll have to re-register).
>
> Ben Root
>
>
> On Thu, Feb 2, 2017 at 11:43 AM, Osborn, Raymond <ro...@an...> wrote:
>
>> I just created a new conda environment with Matplotlib included, and it
>> duly installed matplotlib: 2.0.0-np111py27_0. It installed PyQt5 by
>> default, whereas I need PyQt4, but when I installed PyQt4 (conda install
>> pyqt=4), it automatically downgraded Matplotlib to 1.5.1.
>> --------
>> The following packages will be DOWNGRADED due to dependency conflicts:
>>
>> matplotlib: 2.0.0-np111py27_0 --> 1.5.1-np111py27_0
>> pyqt: 5.6.0-py27_2 --> 4.11.4-py27_4
>> qt: 5.6.2-0 --> 4.8.7-4
>> --------
>> Is PyQt5 really a dependency for Matplotlib v2? I have been testing
>> release candidate versions of Matplotlib v2 without any problem. This will
>> cause headaches to my users who want the latest features.
>>
>> Ray
>> --
>> Ray Osborn, Senior Scientist
>> Materials Science Division
>> Argonne National Laboratory
>> Argonne, IL 60439, USA
>> Phone: +1 (630) 252-9011 <(630)%20252-9011>
>> Email: RO...@an...
>>
>>
>>
>> ------------------------------------------------------------
>> ------------------
>> Check out the vibrant tech community on one of the world's most
>> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
>> _______________________________________________
>> Matplotlib-devel mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
>>
>
>
> ------------------------------------------------------------
> ------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> _______________________________________________
> Matplotlib-devel mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
>
>

no, pyqt5 is not a dependency for matplotlib. this looks like a conda
packaging issue.
Side note: the sourceforge mailing list is deprecated. Please use the
python.org version instead (you'll have to re-register).
Ben Root
On Thu, Feb 2, 2017 at 11:43 AM, Osborn, Raymond <ro...@an...> wrote:
> I just created a new conda environment with Matplotlib included, and it
> duly installed matplotlib: 2.0.0-np111py27_0. It installed PyQt5 by
> default, whereas I need PyQt4, but when I installed PyQt4 (conda install
> pyqt=4), it automatically downgraded Matplotlib to 1.5.1.
> --------
> The following packages will be DOWNGRADED due to dependency conflicts:
>
> matplotlib: 2.0.0-np111py27_0 --> 1.5.1-np111py27_0
> pyqt: 5.6.0-py27_2 --> 4.11.4-py27_4
> qt: 5.6.2-0 --> 4.8.7-4
> --------
> Is PyQt5 really a dependency for Matplotlib v2? I have been testing
> release candidate versions of Matplotlib v2 without any problem. This will
> cause headaches to my users who want the latest features.
>
> Ray
> --
> Ray Osborn, Senior Scientist
> Materials Science Division
> Argonne National Laboratory
> Argonne, IL 60439, USA
> Phone: +1 (630) 252-9011
> Email: RO...@an...
>
>
>
> ------------------------------------------------------------
> ------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> _______________________________________________
> Matplotlib-devel mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
>

I just created a new conda environment with Matplotlib included, and it duly installed matplotlib: 2.0.0-np111py27_0. It installed PyQt5 by default, whereas I need PyQt4, but when I installed PyQt4 (conda install pyqt=4), it automatically downgraded Matplotlib to 1.5.1.
--------
The following packages will be DOWNGRADED due to dependency conflicts:
 matplotlib: 2.0.0-np111py27_0 --> 1.5.1-np111py27_0
 pyqt: 5.6.0-py27_2 --> 4.11.4-py27_4 
 qt: 5.6.2-0 --> 4.8.7-4
--------
Is PyQt5 really a dependency for Matplotlib v2? I have been testing release candidate versions of Matplotlib v2 without any problem. This will cause headaches to my users who want the latest features.
Ray
-- 
Ray Osborn, Senior Scientist
Materials Science Division
Argonne National Laboratory
Argonne, IL 60439, USA
Phone: +1 (630) 252-9011
Email: RO...@an...