Am Sonntag, 13. Januar 2013 schrieb Ludovic Courtès:

> >> If --build-users-group is not given explicitly, check for the group

> >> nixbld and use it if it exists.

> I’m not sure if we want to automatically use a given group name. What

> if that name was used for something else on this machine? Granted, it’s

> unlikely, but it’s not completely impossible either.

In that case, the user would have to give the builder group explicitly anyway. I think that using the guix-builder group as a default should be a very safe bet.

Andreas