From 7ef800e8401a4e3fda4e8d1208b940ad6743449e Mon Sep 17 00:00:00 2001
From: Tom Hastjarjanto <tom@mailx.nl>
Date: Sun, 14 Sep 2025 07:58:30 +0200
Subject: [PATCH] fix: ensure file is written in temp dir (#6753)

---
 .changeset/happy-wasps-vanish.md          | 5 +++++
 packages/libraries/router/src/registry.rs | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/happy-wasps-vanish.md

diff --git a/.changeset/happy-wasps-vanish.md b/.changeset/happy-wasps-vanish.md
new file mode 100644
index 000000000..ac31e38ab
--- /dev/null
+++ b/.changeset/happy-wasps-vanish.md
@@ -0,0 +1,5 @@
+---
+'hive-apollo-router-plugin': patch
+---
+
+fix tmp dir filename
diff --git a/packages/libraries/router/src/registry.rs b/packages/libraries/router/src/registry.rs
index 0f806f727..c3fbb7b67 100644
--- a/packages/libraries/router/src/registry.rs
+++ b/packages/libraries/router/src/registry.rs
@@ -124,7 +124,7 @@ impl HiveRegistry {
         // It also enables hot-reloading to makes sure Apollo Router watches the file.
         let file_name = config.schema_file_path.unwrap_or(
             env::temp_dir()
-                .with_file_name("supergraph-schema.graphql")
+                .join("supergraph-schema.graphql")
                 .to_string_lossy()
                 .to_string(),
         );