Add LN Markets Lightning backend integration

.env.example

@@ -112,6 +112,11 @@ MINT_BLINK_KEY=blink_abcdefgh
 # Use with StrikeWallet for BTC, USD, and EUR
 MINT_STRIKE_KEY=ABC123
 
+# Use with LNMarkets for BTC
+MINT_LNMARKETS_KEY=your_lnmarkets_key
+MINT_LNMARKETS_SECRET=your_lnmarkets_secret
+MINT_LNMARKETS_PASSPHRASE=your_lnmarkets_passphrase
+
 # fee to reserve in percent of the amount
 LIGHTNING_FEE_PERCENT=1.0
 # minimum fee to reserve

cashu/core/settings.py

@@ -104,6 +104,12 @@ class MintBackends(MintSettings):
     mint_strike_key: str = Field(default=None)
     mint_blink_key: str = Field(default=None)
 
+    mint_lnmarkets_key: str = Field(default=None)
+    mint_lnmarkets_secret: str = Field(default=None)
+    mint_lnmarkets_passphrase: str = Field(default=None)
+    mint_lnmarkets_endpoint: str = Field(
+        default="https://api.lnmarkets.com/v3"
+    )
 
 class MintLimits(MintSettings):
     mint_rate_limit: bool = Field(

cashu/lightning/__init__.py

@@ -7,6 +7,7 @@
 from .lnbits import LNbitsWallet  # noqa: F401
 from .lnd_grpc.lnd_grpc import LndRPCWallet  # noqa: F401
 from .lndrest import LndRestWallet  # noqa: F401
+from .lnmarkets import LNMarketsWallet  # noqa: F401
 from .strike import StrikeWallet  # noqa: F401
 
 backend_settings = [