Bug#961028: hplip: No scanner found: SANE cannot load the hpaio backend

[Florian Hatat <mininet@wanadoo.fr>]

Thanks to Andreas Radke, here are some extra resources:

* the same bug received a patch in Arch:
bug: https://bugs.archlinux.org/task/66704
patch:
https://git.archlinux.org/svntogit/packages.git/commit/trunk?h=packages/hplip&id=edd6e8898d6bfbf39888099171240f2c949f3669

* other relevant upstream issue:
https://bugs.launchpad.net/hplip/+bug/1879445

This issue has an attached patch:
https://launchpadlibrarian.net/480406888/hplip-configure-python.patch
I've just applied this patch to the current Debian source, and rebuilt
the package. This fixes the issue for me.

Regards,
-- 
Florian Hatat