Unlike --no-grafts,
this has security updates appropriate for use in production
environments, but rebuilds part of the world, most importantly Rust.
Building bootstrap rust-1.54 fails on my laptop, unless I specify the
common build option --cores=1 in guix build.

I dedicate the above snippet to the public domain as per CC0.
https://creativecommons.org/publicdomain/zero/1.0/legalcode
If someone wishes to use similar code.

Regards,
Florian