wallet: Default new wallets to descriptor wallets

src/bitcoin-wallet.cpp

@@ -30,6 +30,7 @@ static void SetupWalletToolArgs(ArgsManager& argsman)
     argsman.AddArg("-dumpfile=<file name>", "When used with 'dump', writes out the records to this file. When used with 'createfromdump', loads the records into a new wallet.", ArgsManager::ALLOW_STRING, OptionsCategory::OPTIONS);
     argsman.AddArg("-debug=<category>", "Output debugging information (default: 0).", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
     argsman.AddArg("-descriptors", "Create descriptors wallet. Only for 'create'", ArgsManager::ALLOW_BOOL, OptionsCategory::OPTIONS);
+    argsman.AddArg("-legacy", "Create legacy wallet. Only for 'create'", ArgsManager::ALLOW_BOOL, OptionsCategory::OPTIONS);
     argsman.AddArg("-format=<format>", "The format of the wallet file to create. Either \"bdb\" or \"sqlite\". Only used with 'createfromdump'", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
     argsman.AddArg("-printtoconsole", "Send trace/debug info to console (default: 1 when no -debug is true, 0 otherwise).", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
 

src/qt/forms/createwalletdialog.ui

@@ -107,6 +107,9 @@
         <property name="text">
          <string>Descriptor Wallet</string>
         </property>
+        <property name="checked">
+         <bool>true</bool>
+        </property>
        </widget>
       </item>
       <item>

src/wallet/rpcwallet.cpp

@@ -2724,7 +2724,7 @@ static RPCHelpMan createwallet()
             {"blank", RPCArg::Type::BOOL, RPCArg::Default{false}, "Create a blank wallet. A blank wallet has no keys or HD seed. One can be set using sethdseed."},
             {"passphrase", RPCArg::Type::STR, RPCArg::Optional::OMITTED_NAMED_ARG, "Encrypt the wallet with this passphrase."},
             {"avoid_reuse", RPCArg::Type::BOOL, RPCArg::Default{false}, "Keep track of coin reuse, and treat dirty and clean coins differently with privacy considerations in mind."},
-            {"descriptors", RPCArg::Type::BOOL, RPCArg::Default{false}, "Create a native descriptor wallet. The wallet will use descriptors internally to handle address creation"},
+            {"descriptors", RPCArg::Type::BOOL, RPCArg::Default{true}, "Create a native descriptor wallet. The wallet will use descriptors internally to handle address creation"},
             {"load_on_startup", RPCArg::Type::BOOL, RPCArg::Optional::OMITTED_NAMED_ARG, "Save wallet name to persistent settings and load on startup. True to add wallet to startup list, false to remove, null to leave unchanged."},
             {"external_signer", RPCArg::Type::BOOL, RPCArg::Default{false}, "Use an external signer such as a hardware wallet. Requires -signer to be configured. Wallet creation will fail if keys cannot be fetched. Requires disable_private_keys and descriptors set to true."},
         },
@@ -2766,7 +2766,7 @@ static RPCHelpMan createwallet()
     if (!request.params[4].isNull() && request.params[4].get_bool()) {
         flags |= WALLET_FLAG_AVOID_REUSE;
     }
-    if (!request.params[5].isNull() && request.params[5].get_bool()) {
+    if (request.params[5].isNull() || request.params[5].get_bool()) {
 #ifndef USE_SQLITE
         throw JSONRPCError(RPC_WALLET_ERROR, "Compiled without sqlite support (required for descriptor wallets)");
 #endif

src/wallet/wallettool.cpp

@@ -116,6 +116,10 @@ bool ExecuteWalletToolFunc(const ArgsManager& args, const std::string& command)
         tfm::format(std::cerr, "The -descriptors option can only be used with the 'create' command.\n");
         return false;
     }
+    if (args.IsArgSet("-legacy") && command != "create") {
+        tfm::format(std::cerr, "The -legacy option can only be used with the 'create' command.\n");
+        return false;
+    }
     if (command == "create" && !args.IsArgSet("-wallet")) {
         tfm::format(std::cerr, "Wallet name must be provided when creating a new wallet.\n");
         return false;
@@ -126,7 +130,19 @@ bool ExecuteWalletToolFunc(const ArgsManager& args, const std::string& command)
     if (command == "create") {
         DatabaseOptions options;
         options.require_create = true;
-        if (args.GetBoolArg("-descriptors", false)) {
+        // If -legacy is set, use it. Otherwise default to false.
+        bool make_legacy = args.GetBoolArg("-legacy", false);
+        // If neither -legacy nor -descriptors is set, default to true. If -descriptors is set, use its value.
+        bool make_descriptors = (!args.IsArgSet("-descriptors") && !args.IsArgSet("-legacy")) || (args.IsArgSet("-descriptors") && args.GetBoolArg("-descriptors", true));
+        if (make_legacy && make_descriptors) {
+            tfm::format(std::cerr, "Only one of -legacy or -descriptors can be set to true, not both\n");
+            return false;
+        }
+        if (!make_legacy && !make_descriptors) {
+            tfm::format(std::cerr, "One of -legacy or -descriptors must be set to true (or omitted)\n");
+            return false;
+        }
+        if (make_descriptors) {
             options.create_flags |= WALLET_FLAG_DESCRIPTORS;
             options.require_format = DatabaseFormat::SQLITE;
         }

test/functional/tool_wallet.py

@@ -31,8 +31,8 @@ class ToolWalletTest(BitcoinTestFramework):
     def bitcoin_wallet_process(self, *args):
         binary = self.config["environment"]["BUILDDIR"] + '/src/bitcoin-wallet' + self.config["environment"]["EXEEXT"]
         default_args = ['-datadir={}'.format(self.nodes[0].datadir), '-chain=%s' % self.chain]
-        if self.options.descriptors and 'create' in args:
-            default_args.append('-descriptors')
+        if not self.options.descriptors and 'create' in args:
+            default_args.append('-legacy')
 
         return subprocess.Popen([binary] + default_args + list(args), stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True)