rename nix-bitcoin-services.nix -> lib.nix

modules/modules.nix

@@ -35,17 +35,17 @@ with lib;
   disabledModules = [ "services/networking/bitcoind.nix" ];
 
   options = {
-    nix-bitcoin-services = mkOption {
-      readOnly = true;
-      default = import ./nix-bitcoin-services.nix lib pkgs;
-    };
-
     nix-bitcoin = {
       pkgs = mkOption {
         type = types.attrs;
         default = (import ../pkgs { inherit pkgs; }).modulesPkgs;
       };
 
+      lib = mkOption {
+        readOnly = true;
+        default = import ../pkgs/lib.nix lib pkgs;
+      };
+
       # Torify binary that works with custom Tor SOCKS addresses
       # Related issue: https://github.com/NixOS/nixpkgs/issues/94236
       torify = mkOption {