Add new machine Marid.

services/fprintd.nix

@@ -0,0 +1,18 @@
+{ config, lib, ... }:
+
+with lib;
+
+mkIf (elem "fprintd" config.machine.services) {
+  security.pam.services = let
+    unlock = [
+      "sudo"
+      "i3lock"
+      "login"
+      "lightdm"
+    ];
+  in listToAttrs (forEach unlock (n: {name = n; value = { fprintAuth = true; }; }));
+
+  services.fprintd = {
+    enable = true;
+  };
+}