[eid] Add module

nixos/modules/hardware/default.nix

@@ -1,5 +1,6 @@
 {
   imports = [
+    ./eid
     ./nvidia
     ./yubikey
   ];

nixos/modules/hardware/eid/default.nix

@@ -0,0 +1,18 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.sisyphus.hardware.eid;
+in {
+  options.sisyphus.hardware.eid.enable = lib.mkEnableOption "Electronic identity card (eID)";
+
+  config = lib.mkIf cfg.enable {
+    services.pcscd = {
+      enable = true;
+      plugins = [ pkgs.ccid ];
+    };
+
+    environment.systemPackages = with pkgs; [
+      eid-mw
+    ];
+  };
+}