structure and add like MatthiasBenaets

modules/hardware/bluetooth.nix

@@ -0,0 +1,17 @@
+#
+# Bluetooth
+#
+
+{ pkgs, ... }:
+
+{
+  hardware.bluetooth = {
+    enable = true;
+    hsphfpd.enable = true;         # HSP & HFP daemon
+    settings = {
+      General = {
+        Enable = "Source,Sink,Media,Socket";
+      };
+    };
+  };
+}

modules/hardware/default.nix

@@ -0,0 +1,15 @@
+#
+#  Hardware
+#
+#  flake.nix
+#   ├─ ./hosts
+#   │   └─ ./<host>
+#   │       └─ default.nix
+#   └─ ./modules
+#       └─ ./services
+#           └─ default.nix *
+#               └─ ...
+#
+[
+  ./bluetooth.nix
+]