spark-wallet: add regtest support

modules/clightning.nix

@@ -68,6 +68,11 @@ in {
       default = "/var/lib/clightning";
       description = "The data directory for clightning.";
     };
+    networkDir = mkOption {
+      readOnly = true;
+      default = "${cfg.dataDir}/${network}";
+      description = "The network data directory.";
+    };
     extraConfig = mkOption {
       type = types.lines;
       default = "";
@@ -119,7 +124,7 @@ in {
         cp ${configFile} ${cfg.dataDir}/config
         chown -R '${cfg.user}:${cfg.group}' '${cfg.dataDir}'
         # The RPC socket has to be removed otherwise we might have stale sockets
-        rm -f ${cfg.dataDir}/bitcoin/lightning-rpc
+        rm -f ${cfg.networkDir}/lightning-rpc
         chmod 640 ${cfg.dataDir}/config
         echo "bitcoin-rpcpassword=$(cat ${config.nix-bitcoin.secretsDir}/bitcoin-rpcpassword-public)" >> '${cfg.dataDir}/config'
         ${optionalString cfg.announce-tor "echo announce-addr=$(cat /var/lib/onion-chef/clightning/clightning) >> '${cfg.dataDir}/config'"}
@@ -136,11 +141,11 @@ in {
         );
       # Wait until the rpc socket appears
       postStart = ''
-        while [[ ! -e ${cfg.dataDir}/${network}/lightning-rpc ]]; do
+        while [[ ! -e ${cfg.networkDir}/lightning-rpc ]]; do
             sleep 0.1
         done
         # Needed to enable lightning-cli for users with group 'clightning'
-        chmod g+x ${cfg.dataDir}/${network}
+        chmod g+x ${cfg.networkDir}
       '';
     };
   };

modules/spark-wallet.nix

@@ -15,7 +15,7 @@ let
       publicURL="--public-url http://$(cat /var/lib/onion-chef/spark-wallet/spark-wallet)"
     ''}
     exec ${pkgs.nix-bitcoin.spark-wallet}/bin/spark-wallet \
-      --ln-path '${cfg.ln-path}'  \
+      --ln-path '${config.services.clightning.networkDir}'  \
       --host ${cfg.host} \
       --config '${config.nix-bitcoin.secretsDir}/spark-wallet-login' \
       ${optionalString cfg.enforceTor torRateProvider} \
@@ -36,13 +36,6 @@ in {
       default = "localhost";
       description = "http(s) server listen address.";
     };
-    ln-path = mkOption {
-      type = types.path;
-      default = "${config.services.clightning.dataDir}/bitcoin";
-      description = ''
-        "The path of the clightning network data directory.";
-      '';
-    };
     onion-service = mkOption {
       type = types.bool;
       default = false;