Wrong user groups when using lightdm

[viric]

Using "lightdm" as displayManager in nixos 18.03 makes the session lack the proper groups.

$ id
uid=1000(viric) gid=444(viric) grups=444(viric)

Using the slim displayManager the extra groups appear just fine, as in console logins as well.

[symphorien]

I use lightdm and have all my groups on 18.03

• system: "x86_64-linux"
• host os: Linux 4.17.14, NixOS, 18.03.133065.e42c07d78a1 (Impala)
• multi-user?: true
• sandbox: true
• version: nix-env (Nix) 2.0.4
• channels(root): "nixos-18.03.133065.e42c07d78a1, nixos-hardware, nixos-stable-17.09.3194.edf1079d43f"
• nixpkgs: /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs

[stale]

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