README.MD

$ nix-shell -p nix-info --run nix-info
system: "x86_64-linux", multi-user?: no, version: nix-env (Nix) 1.11.16, nixpkgs: /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs

Howdy Folks;

Looking to configure https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/security/duosec.nix and it's crashing out with

$ nixos-rebuild test --show-trace
building Nix...
building the system configuration...
error: while evaluating the attribute ‘buildCommand’ of the derivation ‘nixos-system’ at /nix/var/nix/profiles/per-user/root/channels/nixos/pkgs/stdenv/generic/make-derivation.nix:98:11:
while evaluating the attribute ‘users’ of the derivation ‘etc’ at /nix/var/nix/profiles/per-user/root/channels/nixos/pkgs/stdenv/generic/make-derivation.nix:98:11:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/etc/etc.nix:23:19, called from undefined position:
while evaluating the attribute ‘user’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:199:44:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:75:45, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:199:52:
while evaluating the attribute ‘value’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:312:9:
while evaluating the option `environment.etc.unnamed-26.1.user':
while evaluating the attribute ‘isDefined’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:344:5:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:333:19, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:333:14:
while evaluating the attribute ‘value._type’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:424:73:
while evaluating the attribute ‘value.content’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:482:14:
while evaluating the attribute ‘default’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/etc/etc.nix:112:15:
while evaluating the attribute ‘uid’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:199:44:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:75:45, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:199:52:
while evaluating the attribute ‘value’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:312:9:
while evaluating the option `environment.etc.unnamed-26.1.uid':
while evaluating the attribute ‘isDefined’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:344:5:
while evaluating ‘filterOverrides’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:419:21, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:328:18:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:102:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:425:8:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:102:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:323:17:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:323:28, called from undefined position:
while evaluating ‘dischargeProperties’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:386:25, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:324:62:
while evaluating the attribute ‘value’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:216:48:
while evaluating the attribute ‘config.uid’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/security/duosec.nix:28:7:
while evaluating the attribute ‘ids.uids.sshd’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:199:44:
attribute ‘sshd’ missing, at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/security/duosec.nix:28:16

Configuration is as follows

$ cat duosec.nix
{ config, ... }:

{
  security.duosec = {
    ssh.enable = true;
    
    ikey = "redacted";
    skey = "redacted";
    host = "redacted";

    autopush = true;
    prompts = 1;

    motd = true;
  };
}

Looks like this is being caused by the removal of the sshd user back in 2015

• NixOS/nixpkgs#15391 (abandoned PR)
• NixOS/nixpkgs#10088 (this issue is being tracked at)