yubikey: New module

modules/services/yubikey/default.nix

@@ -0,0 +1,31 @@
+{ lib, config, pkgs, ...}:
+
+let
+  cfg = config.ptw.services.yubikey;
+in {
+  options.ptw.services.yubikey = {
+    enable = lib.mkEnableOption "Enable everything for using a YubiKey";
+  };
+
+  config = lib.mkIf cfg.enable {
+    services = {
+      # Unprivileged access to the YubiKey
+      udev.packages = [ pkgs.yubikey-personalization ];
+
+      # Allow using the YubiKey as a smart card
+      pcscd.enable = true;
+    };
+
+    environment.systemPackages = with pkgs; [
+      # Management
+      yubikey-manager-qt yubikey-manager yubico-piv-tool
+    ];
+
+    programs = {
+      gnupg.agent = {
+        enable = true;
+        enableSSHSupport = true;
+      };
+    };
+  };
+}