Merge pull request lightningdevkit#4000 from TheBlueMatt/2025-08-3997-followups

Trivial 3997 followups

Author: TheBlueMatt

ci/check-lint.sh

@@ -5,6 +5,8 @@ set -x
 CLIPPY() {
 	# shellcheck disable=SC2086
 	RUSTFLAGS='-D warnings' cargo clippy $1 -- $2 \
+		`# https://github.com/rust-lang/rust-clippy/issues/15442` \
+		-A unused_imports \
 		`# Things clippy defaults to allowing but we should avoid` \
 		-D clippy::clone_on_ref_ptr \
 		`# Things where clippy is just wrong` \

lightning-block-sync/src/lib.rs

@@ -49,8 +49,7 @@ use bitcoin::hash_types::BlockHash;
 use bitcoin::pow::Work;
 
 use lightning::chain;
-#[allow(unused_imports)] // This thinks trait imports are unused if they're use in macros :(
-use lightning::chain::Listen as _;
+use lightning::chain::Listen;
 
 use std::future::Future;
 use std::ops::Deref;

lightning/src/chain/chainmonitor.rs

@@ -33,9 +33,7 @@ use crate::chain::channelmonitor::{
 	WithChannelMonitor,
 };
 use crate::chain::transaction::{OutPoint, TransactionData};
-#[allow(unused_imports)] // This thinks trait imports are unused if they're use in macros :(
-use crate::chain::Filter as _;
-use crate::chain::{ChannelMonitorUpdateStatus, WatchedOutput};
+use crate::chain::{ChannelMonitorUpdateStatus, Filter, WatchedOutput};
 use crate::events::{self, Event, EventHandler, ReplayEvent};
 use crate::ln::channel_state::ChannelDetails;
 use crate::ln::msgs::{self, BaseMessageHandler, Init, MessageSendEvent, SendOnlyMessageHandler};

lightning/src/chain/channelmonitor.rs

@@ -42,8 +42,7 @@ use crate::chain::package::{
 	HolderHTLCOutput, PackageSolvingData, PackageTemplate, RevokedHTLCOutput, RevokedOutput,
 };
 use crate::chain::transaction::{OutPoint, TransactionData};
-#[allow(unused_imports)] // This thinks trait imports are unused if they're use in macros :(
-use crate::chain::Filter as _;
+use crate::chain::Filter;
 use crate::chain::{BestBlock, WatchedOutput};
 use crate::events::bump_transaction::{AnchorDescriptor, BumpTransactionEvent};
 use crate::events::{ClosureReason, Event, EventHandler, ReplayEvent};

lightning/src/ln/channel.rs

@@ -14136,6 +14136,7 @@ mod tests {
 	use crate::ln::script::ShutdownScript;
 	use crate::prelude::*;
 	use crate::routing::router::{Path, RouteHop};
+	#[cfg(ldk_test_vectors)]
 	use crate::sign::{ChannelSigner, EntropySource, InMemorySigner, SignerProvider};
 	#[cfg(splicing)]
 	use crate::sync::Mutex;
@@ -14156,8 +14157,7 @@ mod tests {
 	use bitcoin::hex::FromHex;
 	use bitcoin::locktime::absolute::LockTime;
 	use bitcoin::network::Network;
-	use bitcoin::opcodes;
-	use bitcoin::script::{Builder, ScriptBuf};
+	use bitcoin::script::Builder;
 	use bitcoin::secp256k1::ffi::Signature as FFISignature;
 	use bitcoin::secp256k1::{ecdsa::Signature, Secp256k1};
 	use bitcoin::secp256k1::{PublicKey, SecretKey};
@@ -14166,7 +14166,7 @@ mod tests {
 	use bitcoin::transaction::{Transaction, TxOut, Version};
 	#[cfg(splicing)]
 	use bitcoin::Weight;
-	use bitcoin::{WPubkeyHash, WitnessProgram, WitnessVersion};
+	use bitcoin::{WitnessProgram, WitnessVersion};
 	use std::cmp;
 
 	#[test]
@@ -14192,17 +14192,19 @@ mod tests {
 		);
 	}
 
-	#[allow(dead_code)]
+	#[cfg(ldk_test_vectors)]
 	struct Keys {
-		signer: InMemorySigner,
+		signer: crate::sign::InMemorySigner,
 	}
 
+	#[cfg(ldk_test_vectors)]
 	impl EntropySource for Keys {
 		fn get_secure_random_bytes(&self) -> [u8; 32] {
 			[0; 32]
 		}
 	}
 
+	#[cfg(ldk_test_vectors)]
 	impl SignerProvider for Keys {
 		type EcdsaSigner = InMemorySigner;
 		#[cfg(taproot)]
@@ -14216,16 +14218,18 @@ mod tests {
 			self.signer.clone()
 		}
 
-		fn get_destination_script(&self, _channel_keys_id: [u8; 32]) -> Result<ScriptBuf, ()> {
+		fn get_destination_script(
+			&self, _channel_keys_id: [u8; 32],
+		) -> Result<bitcoin::script::ScriptBuf, ()> {
 			let secp_ctx = Secp256k1::signing_only();
 			let hex = "0fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff";
 			let channel_monitor_claim_key =
 				SecretKey::from_slice(&<Vec<u8>>::from_hex(hex).unwrap()[..]).unwrap();
-			let channel_monitor_claim_key_hash = WPubkeyHash::hash(
+			let channel_monitor_claim_key_hash = bitcoin::WPubkeyHash::hash(
 				&PublicKey::from_secret_key(&secp_ctx, &channel_monitor_claim_key).serialize(),
 			);
 			Ok(Builder::new()
-				.push_opcode(opcodes::all::OP_PUSHBYTES_0)
+				.push_opcode(bitcoin::opcodes::all::OP_PUSHBYTES_0)
 				.push_slice(channel_monitor_claim_key_hash)
 				.into_script())
 		}
@@ -15906,7 +15910,7 @@ mod tests {
 	fn funding_input_sats(input_value_sats: u64) -> (TxIn, Transaction, Weight) {
 		use crate::sign::P2WPKH_WITNESS_WEIGHT;
 
-		let input_1_prev_out = TxOut { value: Amount::from_sat(input_value_sats), script_pubkey: ScriptBuf::default() };
+		let input_1_prev_out = TxOut { value: Amount::from_sat(input_value_sats), script_pubkey: bitcoin::ScriptBuf::default() };
 		let input_1_prev_tx = Transaction {
 			input: vec![], output: vec![input_1_prev_out],
 			version: Version::TWO, lock_time: bitcoin::absolute::LockTime::ZERO,

lightning/src/ln/channelmanager.rs

@@ -50,9 +50,7 @@ use crate::chain::channelmonitor::{
 	LATENCY_GRACE_PERIOD_BLOCKS, MAX_BLOCKS_FOR_CONF,
 };
 use crate::chain::transaction::{OutPoint, TransactionData};
-#[allow(unused_imports)] // This thinks trait imports are unused if they're use in macros :(
-use crate::chain::Watch as _;
-use crate::chain::{BestBlock, ChannelMonitorUpdateStatus, Confirm};
+use crate::chain::{BestBlock, ChannelMonitorUpdateStatus, Confirm, Watch};
 use crate::events::{
 	self, ClosureReason, Event, EventHandler, EventsProvider, HTLCHandlingFailureType,
 	InboundChannelFunds, PaymentFailureReason, ReplayEvent,