unify hardcoded regtest fee

electrum/lnbase.py

@@ -1052,9 +1052,9 @@ class Peer(PrintError):
         await self.update_channel(chan, "update_fee", channel_id=chan.channel_id, feerate_per_kw=feerate_per_kw)
 
     def current_feerate_per_kw(self):
+        from .simple_config import FEE_LN_ETA_TARGET, FEERATE_FALLBACK_STATIC_FEE, FEERATE_REGTEST_HARDCODED
         if constants.net is constants.BitcoinRegtest:
-            return 45000
-        from .simple_config import FEE_LN_ETA_TARGET, FEERATE_FALLBACK_STATIC_FEE
+            return FEERATE_REGTEST_HARDCODED // 4
         feerate_per_kvbyte = self.network.config.eta_target_to_fee(FEE_LN_ETA_TARGET)
         if feerate_per_kvbyte is None:
             feerate_per_kvbyte = FEERATE_FALLBACK_STATIC_FEE

electrum/simple_config.py

@@ -28,6 +28,7 @@ FEERATE_FALLBACK_STATIC_FEE = 150000
 FEERATE_DEFAULT_RELAY = 1000
 FEERATE_STATIC_VALUES = [1000, 2000, 5000, 10000, 20000, 30000,
                          50000, 70000, 100000, 150000, 200000, 300000]
+FEERATE_REGTEST_HARDCODED = 180000  # for eclair compat
 
 
 config = None
@@ -511,7 +512,7 @@ class SimpleConfig(Logger):
         fee_level: float between 0.0 and 1.0, representing fee slider position
         """
         if constants.net is constants.BitcoinRegtest:
-            return 45000
+            return FEERATE_REGTEST_HARDCODED
         if dyn is None:
             dyn = self.is_dynfee()
         if mempool is None: