feat: add nfc module (and use it on 'astyanax')

home/hosts/astyanax/default.nix

@@ -17,6 +17,7 @@ in
     ../../modules/git
     ../../modules/k8s/k9s.nix
     ../../modules/kitty.nix
+    ../../modules/nfc
     ../../modules/nvim.nix
     ../../modules/ssh.nix
     ../../modules/taskwarrior.nix
@@ -38,6 +39,7 @@ in
   cloud.hetzner.enable = true;
   comms.signal.enable = true;
   github.enable = true;
+  nfc.proxmark3.enable = true;
 
   shell.bash = {
     enable = true;

home/modules/nfc/default.nix

@@ -0,0 +1,5 @@
+{
+  imports = [
+    ./proxmark3.nix
+  ];
+}

home/modules/nfc/proxmark3.nix

@@ -0,0 +1,21 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  cfg = config.nfc.proxmark3;
+in
+{
+  options.nfc.proxmark3 = {
+    enable = lib.mkEnableOption "proxmark3 (iceman fork)";
+  };
+
+  config = lib.mkIf cfg.enable {
+    home.packages = [
+      pkgs.proxmark3
+    ];
+  };
+}