There is an updated pull request by leahneukirchen against master on the void-packages repository

https://github.com/leahneukirchen/void-packages python38
https://github.com/void-linux/void-packages/pull/15623

[WIP] Python 3.8
This huge PR tries to bump all packages that either shlib-require
libpython3.6m.so.1.0 or put files into /usr/lib/python3.6/site-packages.

Broken packages (on x86_64):

- [ ] attic -> upstream dead, remove?
- [ ] blender -> update to 2.80
- [ ] eolie -> meson
- [x] fontforge
- [ ] freecad
- [ ] gst1-python -> meson
- [ ] libopenshot -> gcc9 issue, but supposedly fixed? @Spencer-H 
- [x] libpeas
- [x] nagstamon
- [x] paraview
- [x] pockyt
- [x] ~~scudcloud~~
- [x] torbrowser-launcher
- [x] unknown-horizons
- [x] vapoursynth
- [x] variety
- [ ] kdevelop-python -> upstream: https://bugs.kde.org/show_bug.cgi?id=411956
- [x] krita: SHA256 mismatch
- [x] ~~shiboken~~
- [x] renderdoc

Untested:

- [ ] libreoffice


A patch file from https://github.com/void-linux/void-packages/pull/15623.patch is attached