On Sat, Oct 06, 2018 at 04:58:13PM +0200, Marius Bakke wrote:
> Python 2 and 3 are using a bundled Expat (residing under Modules/).
> 
> This has been the cause of security vulnerabilities in the past and
> should be changed to use Expat from Guix.

Looks like Debian uses an external Expat to fill the dependency, so it
should be possible:

https://packages.debian.org/stretch/python3.5-minimal

We should look into the difference between the bundled Expat and
upstream Expat.