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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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>> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
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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
>
>

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