Bug#868992: python-ltfatpy: FTBFS on hurd-i386: No module named 'matplotlib._path'

[Ghislain Vaillant]

On Wed, 19 Jul 2017 21:40:57 -0400 "Aaron M. Ucko" <ucko at debian.org>
> Thanks for taking care of #861094.  Alas, the build of python-ltfatpy
> on hurd-i386 (admittedly not a release architecture) is still
failing:
> 
>   E   ModuleNotFoundError: No module named 'matplotlib._path'
> 
> I see that hurd-i386 still just has matplotlib 1.5.x, whereas the
> other architectures have 2.x; please version the build dependencies
on

Upstream versioned matplotlib to 1.4 minimum, and packages in jessie
(matplotlib/1.4.2-3.1) all provide the said matplotlib._path extension
module. So, a versioned dependency should not be necessary (`cme fix`
actually drops it).

It also looks like the hurd-i386 package does ship this extension
module, so the problem is probably somewhere else.

Cheers,
Ghis