1 files changed, 9 insertions, 3 deletions
diff --git a/hosts/common/system/users.nix b/modules/system/users/default.nix
index 7d847f3..b39067c 100644
--- a/hosts/common/system/users.nix
+++ b/modules/system/users/default.nix
@@ -1,6 +1,8 @@
 { config, lib, pkgs, ... }:
-
-{
+let
+  groupExists = grp: builtins.hasAttr grp config.users.groups;
+  groupsIfExist = builtins.filter groupExists;
+in {
   # Users are managed through this configuration. If a user is added
   # manually, it will be removed on system activation.
   users.mutableUsers = false;
@@ -12,7 +14,11 @@
     group = "fcuny";
     home = "/home/fcuny";
     shell = pkgs.fish;
-    extraGroups = [ "users" "wheel" "docker" ];
+    extraGroups = groupsIfExist [
+      "docker"
+      "users"
+      "wheel" # `sudo` for the user.
+    ];
     hashedPassword =
       "$6$i.z1brxtb44JAEco$fDD2Izl.zRR9vBCB2VBKPScChGw38EEl7QEiBTJ/EwgP3oSL0X3ZHq0PJ.RtqzBsWTPUjl4F3MKOBMhnaAPr6.";
     openssh.authorizedKeys.keys = [