bitcoind: use type str for rpcbind

Extra RPC bind addresses can still be added via extraConfig.

modules/bitcoind.nix

@@ -39,8 +39,8 @@ let
           "rpcwhitelist=${user.name}:${lib.strings.concatStringsSep "," user.rpcwhitelist}"}
       '') (builtins.attrValues cfg.rpc.users)
     }
-    ${lib.concatMapStrings (rpcbind: "rpcbind=${rpcbind}\n") cfg.rpcbind}
+    rpcbind=${cfg.rpcbind}
-    rpcconnect=${builtins.elemAt cfg.rpcbind 0}
+    rpcconnect=${cfg.rpcbind}
     ${lib.concatMapStrings (rpcallowip: "rpcallowip=${rpcallowip}\n") cfg.rpcallowip}
 
     # Wallet options
@@ -150,8 +150,8 @@ in {
         description = "Set the number of threads to service RPC calls";
       };
       rpcbind = mkOption {
-        type = types.listOf types.str;
+        type = types.str;
-        default = [ "127.0.0.1" ];
+        default = "127.0.0.1";
         description = ''
           Bind to given address to listen for JSON-RPC connections.
         '';

modules/btcpayserver.nix

@@ -112,7 +112,7 @@ in {
       configFile = builtins.toFile "config" ''
         network=${config.services.bitcoind.network}
         btcrpcuser=${cfg.bitcoind.rpc.users.btcpayserver.name}
-        btcrpcurl=http://${builtins.elemAt config.services.bitcoind.rpcbind 0}:${toString cfg.bitcoind.rpc.port}
+        btcrpcurl=http://${config.services.bitcoind.rpcbind}:${toString cfg.bitcoind.rpc.port}
         btcnodeendpoint=${config.services.bitcoind.bind}:8333
         bind=${cfg.nbxplorer.bind}
         port=${toString cfg.nbxplorer.port}

modules/clightning.nix

@@ -13,7 +13,7 @@ let
     ${optionalString (cfg.proxy != null) "proxy=${cfg.proxy}"}
     always-use-proxy=${if cfg.always-use-proxy then "true" else "false"}
     bind-addr=${cfg.bind-addr}:${toString cfg.bindport}
-    bitcoin-rpcconnect=${builtins.elemAt config.services.bitcoind.rpcbind 0}
+    bitcoin-rpcconnect=${config.services.bitcoind.rpcbind}
     bitcoin-rpcport=${toString config.services.bitcoind.rpc.port}
     bitcoin-rpcuser=${config.services.bitcoind.rpc.users.public.name}
     rpc-file-mode=0660

modules/electrs.nix

@@ -97,7 +97,7 @@ in {
           --daemon-dir='${bitcoind.dataDir}' \
           --electrum-rpc-addr=${cfg.address}:${toString cfg.port} \
           --monitoring-addr=${cfg.address}:${toString cfg.monitoringPort} \
-          --daemon-rpc-addr=${builtins.elemAt bitcoind.rpcbind 0}:${toString bitcoind.rpc.port} \
+          --daemon-rpc-addr=${bitcoind.rpcbind}:${toString bitcoind.rpc.port} \
           ${cfg.extraArgs}
         '';
         User = cfg.user;

modules/joinmarket.nix

@@ -20,7 +20,7 @@ let
     [BLOCKCHAIN]
     blockchain_source = bitcoin-rpc
     network = ${bitcoind.network}
-    rpc_host = ${builtins.elemAt bitcoind.rpcbind 0}
+    rpc_host = ${bitcoind.rpcbind}
     rpc_port = ${toString bitcoind.rpc.port}
     rpc_user = ${bitcoind.rpc.users.privileged.name}
     @@RPC_PASSWORD@@

modules/liquid.nix

@@ -31,7 +31,7 @@ let
     ${lib.concatMapStrings (rpcallowip: "rpcallowip=${rpcallowip}\n") cfg.rpcallowip}
     ${optionalString (cfg.rpcuser != null) "rpcuser=${cfg.rpcuser}"}
     ${optionalString (cfg.rpcpassword != null) "rpcpassword=${cfg.rpcpassword}"}
-    mainchainrpchost=${builtins.elemAt config.services.bitcoind.rpcbind 0}
+    mainchainrpchost=${config.services.bitcoind.rpcbind}
     mainchainrpcport=${toString config.services.bitcoind.rpc.port}
     mainchainrpcuser=${config.services.bitcoind.rpc.users.public.name}
 

modules/lnd.nix

@@ -8,7 +8,7 @@ let
   secretsDir = config.nix-bitcoin.secretsDir;
 
   bitcoind = config.services.bitcoind;
-  bitcoindRpcAddress = builtins.elemAt bitcoind.rpcbind 0;
+  bitcoindRpcAddress = bitcoind.rpcbind;
   onion-chef-service = (if cfg.announce-tor then [ "onion-chef.service" ] else []);
   networkDir = "${cfg.dataDir}/chain/bitcoin/${bitcoind.network}";
   configFile = pkgs.writeText "lnd.conf" ''

modules/netns-isolation.nix

@@ -252,7 +252,7 @@ in {
 
     services.bitcoind = {
       bind = netns.bitcoind.address;
-      rpcbind = [ netns.bitcoind.address ];
+      rpcbind = netns.bitcoind.address;
       rpcallowip = [
         bridgeIp # For operator user
         netns.bitcoind.address