enable anchor outputs via config option

electrum/lnutil.py

@@ -1552,6 +1552,7 @@ LN_FEATURES_IMPLEMENTED = (
         | LnFeatures.OPTION_SHUTDOWN_ANYSEGWIT_OPT | LnFeatures.OPTION_SHUTDOWN_ANYSEGWIT_REQ
         | LnFeatures.OPTION_CHANNEL_TYPE_OPT | LnFeatures.OPTION_CHANNEL_TYPE_REQ
         | LnFeatures.OPTION_SCID_ALIAS_OPT | LnFeatures.OPTION_SCID_ALIAS_REQ
+        | LnFeatures.OPTION_ANCHOR_OUTPUTS_OPT | LnFeatures.OPTION_ANCHOR_OUTPUTS_REQ
 )
 
 

electrum/lnworker.py

@@ -833,6 +833,8 @@ class LNWallet(LNWorker):
         self.payment_secret_key = generate_keypair(BIP32Node.from_xkey(xprv), LnKeyFamily.PAYMENT_SECRET_KEY).privkey
         Logger.__init__(self)
         features = LNWALLET_FEATURES
+        if self.config.ENABLE_ANCHOR_CHANNELS:
+            features |= LnFeatures.OPTION_ANCHOR_OUTPUTS_OPT
         if self.config.ACCEPT_ZEROCONF_CHANNELS:
             features |= LnFeatures.OPTION_ZEROCONF_OPT
         LNWorker.__init__(self, self.node_keypair, features, config=self.config)

electrum/simple_config.py

@@ -1211,6 +1211,8 @@ Warning: setting this to too low will result in lots of payment failures."""),
         ]),
     )
 
+    # anchor outputs channels
+    ENABLE_ANCHOR_CHANNELS = ConfigVar('enable_anchor_channels', default=False, type_=bool)
     # zeroconf channels
     ACCEPT_ZEROCONF_CHANNELS = ConfigVar('accept_zeroconf_channels', default=False, type_=bool)
     ZEROCONF_TRUSTED_NODE = ConfigVar('zeroconf_trusted_node', default='', type_=str)

tests/test_lnpeer.py

@@ -177,6 +177,7 @@ class MockLNWallet(Logger, EventListener, NetworkRetryManager[LNPeerAddr]):
         self.features |= LnFeatures.OPTION_CHANNEL_TYPE_OPT
         self.features |= LnFeatures.OPTION_SCID_ALIAS_OPT
         self.features |= LnFeatures.OPTION_STATIC_REMOTEKEY_OPT
+        self.config.ENABLE_ANCHOR_CHANNELS = TEST_ANCHOR_CHANNELS
         self.pending_payments = defaultdict(asyncio.Future)
         for chan in chans:
             chan.lnworker = self