move rpc thread count setting to lightning modules

modules/clightning.nix

@@ -95,7 +95,12 @@ in {
   };
 
   config = mkIf cfg.enable {
-    services.bitcoind.enable = true;
+    services.bitcoind = {
+      enable = true;
+      # Increase rpc thread count due to reports that lightning implementations fail
+      # under high bitcoind rpc load
+      rpc.threads = 16;
+    };
 
     environment.systemPackages = [ nbPkgs.clightning (hiPrio cfg.cli) ];
     users.users.${cfg.user} = {

modules/lnd.nix

@@ -154,7 +154,12 @@ in {
       }
     ];
 
-    services.bitcoind.enable = true;
+    services.bitcoind = {
+      enable = true;
+      # Increase rpc thread count due to reports that lightning implementations fail
+      # under high bitcoind rpc load
+      rpc.threads = 16;
+    };
 
     environment.systemPackages = [ cfg.package (hiPrio cfg.cli) ];
 

modules/presets/secure-node.nix

@@ -42,9 +42,6 @@ in {
       discover = false;
       addresstype = "bech32";
       dbCache = 1000;
-      # higher rpcthread count due to reports that lightning implementations fail
-      # under high bitcoind rpc load
-      rpc.threads = 16;
     };
 
     services.liquidd = {