nix-info may misreport multi-userness

[lheckemann]

Issue description

I don't know the exact circumstances leading to this, but it happens in a netbooted system:

$ nix-build '<nixpkgs/nixos>' --arg configuration '{ imports = [<nixpkgs/nixos/modules/installer/netboot/netboot.nix>]; users.users.root.password = "notsosecret"; }' -A config.system.build.kernel -A config.system.build.netbootIpxeScript -A config.system.build.netbootRamdisk
$ ln -s result/bzImage
$ ln -s result-2/netboot.ipxe
$ ln -s result-3/initrd
$ qemu-kvm -boot order=n -net nic,model=e1000 -net user,tftp=.,bootfile=netboot.ipxe -m 2G

then logging into the VM as root and running nix-info. This produces (amongst other things) multi-user?: no. However, this is nixos and certainly a multi-user nix!

This also occurs on my current unstable ("18.09pre149415.8395f9aa85e").

cc @grahamc

Technical details

(host system)

• system: "x86_64-linux"
• host os: Linux 4.14.55, NixOS, 18.03.133126.4df3426f5a5 (Impala)
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.0.4
• channels(root): "nixos-18.03.133126.4df3426f5a5, nixos-unstable-18.09pre140099.f53d22edd68"
• channels(linus): ""
• nixpkgs: /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs

[stale]

Thank you for your contributions.

This has been automatically marked as stale because it has had no activity for 180 days.

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[lheckemann]

Maybe this is because root doesn't go through the daemon.

[stale]

I marked this as stale due to inactivity. → More info