chroot builds should have a (fake) domain name

[peti]

Builds that run in a chroot environment have a fake hostname, but they don't have a fake domain name (say, example.org). This causes failures in tools like Git, that try to guess some kind of e-mail address of the local user.

[edolstra]

Actually having no domain name set is completely normal and is the kernel default. For instance, on my system:

[root@mandark:~]# domainname 
(none)

I don't think NixOS sets the domain name anywhere.

Isn't the Git failure caused by the absence of /etc/resolv.conf?

[peti]

I'm not sure. The e-mail address Git ends up constructing is something along the lines of nixbuild@nixbuild.(none). The problem is the "(none)" part, obviously. I'm not sure where it gets that from. Maybe from running hostname --fqdn?