Antonio Carlos Padoan Junior schreef op wo 30-03-2022 om 08:51 [+0200]:
> Hello,
> 
> I'm trying to figure out how to set a unprivileged container using lxc
> in guix. I do not know either how to allocate subuid/gid space in guix,

subuid/gid are _not_ unprivileged.  They are an userspace feature by
the (privileged) setuid binary 'newuidmap', see
<https://manpages.debian.org/buster/uidmap/newuidmap.1.en.html>.

I don't think there's currently a mechanism for that in Guix System,
except manually creating and modifying /etc/subuid appropriately and
installing the setuid binaries.  However, I suppose that the 'user-
account' record could be extended to support subuid/subgid and
automatically create /etc/subuid.

Greetings,
Maxime