From 1d2b90f7c3180f6a6a7fab78c018c78aeaba4044 Mon Sep 17 00:00:00 2001
From: Lennart <18233294+lennart-k@users.noreply.github.com>
Date: Sun, 21 Sep 2025 20:39:23 +0200
Subject: [PATCH] xml: Sort namespaces

Fixes #104
---
 Cargo.lock                                  | 1 +
 crates/xml/derive/Cargo.toml                | 1 +
 crates/xml/derive/src/xml_struct/impl_se.rs | 2 ++
 3 files changed, 4 insertions(+)

diff --git a/Cargo.lock b/Cargo.lock
index 624bc2c..b01c6cd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5085,6 +5085,7 @@ version = "0.1.0"
 dependencies = [
  "darling 0.21.3",
  "heck",
+ "itertools 0.14.0",
  "proc-macro2",
  "quote",
  "syn 2.0.106",
diff --git a/crates/xml/derive/Cargo.toml b/crates/xml/derive/Cargo.toml
index 52db753..ffb04f3 100644
--- a/crates/xml/derive/Cargo.toml
+++ b/crates/xml/derive/Cargo.toml
@@ -13,3 +13,4 @@ quote.workspace = true
 proc-macro2.workspace = true
 heck.workspace = true
 darling.workspace = true
+itertools.workspace = true
diff --git a/crates/xml/derive/src/xml_struct/impl_se.rs b/crates/xml/derive/src/xml_struct/impl_se.rs
index d7431c6..8365b3d 100644
--- a/crates/xml/derive/src/xml_struct/impl_se.rs
+++ b/crates/xml/derive/src/xml_struct/impl_se.rs
@@ -1,3 +1,4 @@
+use itertools::Itertools;
 use quote::quote;
 
 use crate::{Field, attrs::FieldType};
@@ -69,6 +70,7 @@ impl NamedStruct {
             self.attrs
                 .ns_prefix
                 .iter()
+                .sorted_by_key(|(_ns, prefix)| prefix.value())
                 .map(|(ns, prefix)| {
                     let attr_name = if prefix.value().is_empty() {
                         "xmlns".to_owned()