updated flake

flake.nix

@@ -21,7 +21,7 @@
 
 	};
 
-	outputs = { self, nixpkgs, nix-bitcoin, nixvim, agenix, btc-clients, nixpkgs-stable, bip110, ... }@attrs: 
+	outputs = { self, nixpkgs, nix-bitcoin, nixvim, agenix, btc-clients, nixpkgs-stable, bip110, ... }:
 
 	let 
 		
@@ -45,8 +45,6 @@
 			
 		  inherit system;
   
-      specialArgs = attrs;
-  
     };
 		
     nixosModules.Sovran_SystemsOS = { pkgs, ... }: {
@@ -65,11 +63,15 @@
 
       ];
 
+      config = {
+        sovran_systemsOS.bip110.package =
+          bip110.packages.${pkgs.system}.bitcoind-knots-bip-110;
+      };
+      
       environment.systemPackages = with pkgs; [
         btc-clients.packages.x86_64-linux.bisq
         btc-clients.packages.x86_64-linux.bisq2
         btc-clients.packages.x86_64-linux.sparrow
-        bip110.packages.x86_64-linux.bitcoind-knots-bip-110
       ];
     };
 	};

modules/bip110.nix

@@ -1,7 +1,20 @@
-{ config, lib, pkgs, bip110, ... }:
+{ config, lib, pkgs, ... }:
 
-lib.mkIf config.sovran_systemsOS.features.bip110 {
+let
+  cfg = config.sovran_systemsOS;
+in
+{
+  options.sovran_systemsOS = {
+    features.bip110 = lib.mkEnableOption "Enable BIP110 bitcoind";
 
-  services.bitcoind.package = bip110.packages.x86_64-linux.bitcoind-knots-bip-110;
+    bip110.package = lib.mkOption {
+      type = lib.types.nullOr lib.types.package;
+      default = null;
+      description = "Custom bitcoind package for BIP110";
+    };
+  };
 
+  config = lib.mkIf (cfg.features.bip110 && cfg.bip110.package != null) {
+    services.bitcoind.package = cfg.bip110.package;
+  };
 }