From dc53ab2b2dc7d2778dffc1bccd34b3ccf36ee0ae Mon Sep 17 00:00:00 2001
From: zjp <jiping_zhou@foxmail.com>
Date: Wed, 2 Oct 2024 20:18:04 +0800
Subject: [PATCH] fix(Metadata): set a default value on
 workspace_default_members deserialization

---
 src/lib.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index cc8791c5..0589fb9d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -158,6 +158,7 @@ pub struct Metadata {
     /// The list of default workspace members
     ///
     /// This not available if running with a version of Cargo older than 1.71.
+    #[serde(default = "empty_workspace_default_members")]
     #[serde(skip_serializing_if = "workspace_default_members_is_missing")]
     pub workspace_default_members: WorkspaceDefaultMembers,
     /// Dependencies graph
@@ -259,6 +260,14 @@ pub fn workspace_default_members_is_missing(
     workspace_default_members.0.is_none()
 }
 
+/// A default value when Metadata is deserialized with WorkspaceDefaultMembers skipped.
+///
+/// We use this function for now because WorkspaceDefaultMembers doesn't implement Default.
+#[doc(hidden)]
+pub fn empty_workspace_default_members() -> WorkspaceDefaultMembers {
+    WorkspaceDefaultMembers(None)
+}
+
 #[derive(Clone, Serialize, Deserialize, Debug)]
 #[cfg_attr(feature = "builder", derive(Builder))]
 #[non_exhaustive]