chore: make clippy happy and bump clippy msrv

crates/bdk/src/descriptor/template.rs

@@ -575,7 +575,7 @@ mod test {
 
         if let ExtendedDescriptor::Pkh(pkh) = xdesc.0 {
             let path: Vec<ChildNumber> = pkh.into_inner().full_derivation_path().unwrap().into();
-            let purpose = path.get(0).unwrap();
+            let purpose = path.first().unwrap();
             assert_matches!(purpose, Hardened { index: 44 });
             let coin_type = path.get(1).unwrap();
             assert_matches!(coin_type, Hardened { index: 0 });
@@ -589,7 +589,7 @@ mod test {
 
         if let ExtendedDescriptor::Pkh(pkh) = tdesc.0 {
             let path: Vec<ChildNumber> = pkh.into_inner().full_derivation_path().unwrap().into();
-            let purpose = path.get(0).unwrap();
+            let purpose = path.first().unwrap();
             assert_matches!(purpose, Hardened { index: 44 });
             let coin_type = path.get(1).unwrap();
             assert_matches!(coin_type, Hardened { index: 1 });

crates/bdk/src/wallet/signer.rs

@@ -812,9 +812,10 @@ pub struct SignOptions {
 }
 
 /// Customize which taproot script-path leaves the signer should sign.
-#[derive(Debug, Clone, PartialEq, Eq)]
+#[derive(Default, Debug, Clone, PartialEq, Eq)]
 pub enum TapLeavesOptions {
     /// The signer will sign all the leaves it has a key for.
+    #[default]
     All,
     /// The signer won't sign leaves other than the ones specified. Note that it could still ignore
     /// some of the specified leaves, if it doesn't have the right key to sign them.
@@ -825,12 +826,6 @@ pub enum TapLeavesOptions {
     None,
 }
 
-impl Default for TapLeavesOptions {
-    fn default() -> Self {
-        TapLeavesOptions::All
-    }
-}
-
 #[allow(clippy::derivable_impls)]
 impl Default for SignOptions {
     fn default() -> Self {

crates/bdk/src/wallet/tx_builder.rs

@@ -811,9 +811,10 @@ impl<'a, D> TxBuilder<'a, D, DefaultCoinSelectionAlgorithm, BumpFee> {
 }
 
 /// Ordering of the transaction's inputs and outputs
-#[derive(Debug, Ord, PartialOrd, Eq, PartialEq, Hash, Clone, Copy)]
+#[derive(Default, Debug, Ord, PartialOrd, Eq, PartialEq, Hash, Clone, Copy)]
 pub enum TxOrdering {
     /// Randomized (default)
+    #[default]
     Shuffle,
     /// Unchanged
     Untouched,
@@ -821,12 +822,6 @@ pub enum TxOrdering {
     Bip69Lexicographic,
 }
 
-impl Default for TxOrdering {
-    fn default() -> Self {
-        TxOrdering::Shuffle
-    }
-}
-
 impl TxOrdering {
     /// Sort transaction inputs and outputs by [`TxOrdering`] variant
     pub fn sort_tx(&self, tx: &mut Transaction) {
@@ -880,9 +875,10 @@ impl RbfValue {
 }
 
 /// Policy regarding the use of change outputs when creating a transaction
-#[derive(Debug, Ord, PartialOrd, Eq, PartialEq, Hash, Clone, Copy)]
+#[derive(Default, Debug, Ord, PartialOrd, Eq, PartialEq, Hash, Clone, Copy)]
 pub enum ChangeSpendPolicy {
     /// Use both change and non-change outputs (default)
+    #[default]
     ChangeAllowed,
     /// Only use change outputs (see [`TxBuilder::only_spend_change`])
     OnlyChange,
@@ -890,12 +886,6 @@ pub enum ChangeSpendPolicy {
     ChangeForbidden,
 }
 
-impl Default for ChangeSpendPolicy {
-    fn default() -> Self {
-        ChangeSpendPolicy::ChangeAllowed
-    }
-}
-
 impl ChangeSpendPolicy {
     pub(crate) fn is_satisfied_by(&self, utxo: &LocalOutput) -> bool {
         match self {