Always thought of Nix worker users in nixbld
as system users, and so I thought nixbld
would have a GID that reflects that (i.e., below 1000). (Not that there is any difference in any way, just curious why this number was chosen.)
On Mac:
$ dscacheutil -q group | grep -A 3 'name: nixbld'
name: nixbld
password: *
gid: 30000
users: _nixbld1 _nixbld2 [..]
On Ubuntu:
$ getent group | grep nixbld
nixbld:x:30000:nixbld1,nixbld2, [..]