initial server work

src/modules/system/corn/default.nix

@@ -0,0 +1,38 @@
+{ pkgs, lib, config, ... }:
+
+with lib;
+let
+  cfg = config.modules.corn;
+
+in
+{ options.modules.corn = { enable = mkEnableOption "corn"; };
+
+  imports = [
+    ./core-lightning
+    ./sparrow-cli
+  ];
+
+  config = mkIf cfg.enable {
+    users = {
+      users = {
+        "bitcoind" = {
+          description = "bitcoind system user";
+          isSystemUser = true;
+          group = "bitcoin";
+        };
+      };
+      groups = {
+        "bitcoin" = {
+          members = [ "core-lightning" "electrs" ];
+        };
+      };
+    };
+    services.bitcoind = {
+      "main-net" = {
+        enable = true;
+        user = "bitcoind";
+        group = "bitcoin";
+      };
+    };
+  };
+}