Update CHANGELOG

Update serde to a version using syn v2.
Update cxx and thiserror in the lock file to versions using syn v2.
Update darling to v20

Cargo.toml

@@ -13,7 +13,3 @@ push = false
 shared-version = true
 sign-tag = true
 tag = false
-
-[patch.crates-io]
-darling = { git = "https://github.com/jonasbb/darling", branch = "prepare-syn-2" }
-# darling = { path = "../darling" }

serde_with/CHANGELOG.md

@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Changed
+
+* Update `syn` to v2 and `darling` to v0.20 (#578)
+    Update proc-macro dependencies.
+    This change should have no impact on users, but now uses the same dependency as `serde_derive`.
+
 ## [2.3.2] - 2023-04-05
 
 ### Changed

serde_with/Cargo.toml

@@ -67,7 +67,7 @@ hex = {version = "0.4.3", optional = true, default-features = false}
 indexmap_1 = {package = "indexmap", version = "1.8", optional = true, default-features = false, features = ["serde-1"]}
 # The derive feature is needed for the flattened_maybe macro.
 # https://github.com/jonasbb/serde_with/blob/eb1965a74a3be073ecd13ec05f02a01bc1c44309/serde_with/src/flatten_maybe.rs#L67
-serde = {version = "1.0.139", default-features = false, features = ["derive"] }
+serde = {version = "1.0.157", default-features = false, features = ["derive"] }
 serde_json = {version = "1.0.45", optional = true, default-features = false}
 serde_with_macros = {path = "../serde_with_macros", version = "=2.3.2", optional = true}
 time_0_3 = {package = "time", version = "~0.3.11", optional = true, default-features = false}

serde_with/src/flatten_maybe.rs

@@ -50,7 +50,7 @@
 /// ```
 #[macro_export]
 macro_rules! flattened_maybe {
-    ($fn:ident, $field:literal) => {
+    ($fn:ident, $field:tt) => {
         fn $fn<'de, T, D>(deserializer: D) -> $crate::__private__::Result<T, D::Error>
         where
             T: $crate::serde::Deserialize<'de>,

serde_with_macros/CHANGELOG.md

@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Changed
+
+* Update `syn` to v2 and `darling` to v0.20 (#578)
+    Update proc-macro dependencies.
+    This change should have no impact on users, but now uses the same dependency as `serde_derive`.
+
 ## [2.3.2] - 2023-04-05
 
 No changes.

serde_with_macros/Cargo.toml

@@ -30,7 +30,7 @@ proc-macro = true
 maintenance = {status = "actively-developed"}
 
 [dependencies]
-darling = "0.14.0"
+darling = "0.20.0"
 proc-macro2 = "1.0.1"
 quote = "1.0.0"
 
@@ -46,7 +46,7 @@ version = "2.0.0"
 expect-test = "1.4.0"
 pretty_assertions = "1.0.0"
 rustversion = "1.0.0"
-serde = {version = "1.0.75", features = ["derive"]}
+serde = {version = "1.0.157", features = ["derive"]}
 serde_json = "1.0.25"
 trybuild = "1.0.80"
 version-sync = "0.9.1"