graph-craft: fix no serde feature failing to compile

Author: Firestar99

node-graph/graph-craft/src/document.rs

@@ -676,10 +676,12 @@ fn migrate_layer_to_merge<'de, D: serde::Deserializer<'de>>(deserializer: D) ->
 	Ok(s)
 }
 // TODO: Eventually remove this document upgrade code
+#[cfg(feature = "serde")]
 fn default_import_metadata() -> (NodeId, IVec2) {
 	(NodeId::new(), IVec2::new(-25, -4))
 }
 // TODO: Eventually remove this document upgrade code
+#[cfg(feature = "serde")]
 fn default_export_metadata() -> (NodeId, IVec2) {
 	(NodeId::new(), IVec2::new(8, -4))
 }

node-graph/graph-craft/src/proto.rs

@@ -532,7 +532,8 @@ impl ProtoNetwork {
 		Ok(())
 	}
 }
-#[derive(Clone, PartialEq, serde::Serialize, serde::Deserialize)]
+#[derive(Clone, PartialEq)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub enum GraphErrorType {
 	NodeNotFound(NodeId),
 	InputNodeNotFound(NodeId),
@@ -588,7 +589,8 @@ impl core::fmt::Debug for GraphErrorType {
 		}
 	}
 }
-#[derive(Clone, PartialEq, serde::Serialize, serde::Deserialize)]
+#[derive(Clone, PartialEq)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct GraphError {
 	pub node_path: Vec<NodeId>,
 	pub identifier: Cow<'static, str>,