Hello!

I started looking at what it would take to upgrade glibc to 2.29 on
‘core-updates’.  Bad news: it depends on Python.

I came up with the WIP patch below, but Python eventually fails to build
with:

--8<---------------cut here---------------start------------->8---
In file included from /tmp/guix-build-python-minimal-3.7.3.drv-0/Python-3.7.3/Modules/ossaudiodev.c:37:0:
/gnu/store/q4i9kq2py260y9ysq1qkjjhpgsmbdcbh-glibc-mesboot-2.16.0/include/sys/soundcard.h:1:29: fatal error: linux/soundcard.h: No such file or directory
 #include <linux/soundcard.h>
                             ^
compilation terminated.
--8<---------------cut here---------------end--------------->8---

Maybe we shouldn’t upgrade glibc in this ‘core-updates’ cycle.  We need
this reduced bootstrap merged!

Thoughts?

Also, it would be nice to use ‘python-on-guile’ here, but it doesn’t
provide a ‘python’ executable and I don’t know if it implements enough
to run these scripts.

Thanks,
Ludo’.