From c7dc1a0173a14e9cb52adcb09ae566cf7eeb314a Mon Sep 17 00:00:00 2001
From: Hermes Agent <hermes@localhost>
Date: Wed, 12 Aug 2026 06:02:57 +0000
Subject: Protect companion manifests from overwrite

---
 src/build.rs | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/build.rs')

diff --git a/src/build.rs b/src/build.rs
index 42c57ef..fcacfc0 100644
--- a/src/build.rs
+++ b/src/build.rs
@@ -42,6 +42,10 @@ impl<I: PackageInstaller, B: InitramfsBuilder> BuildExecutor<I, B> {
         if artifact.exists() {
             bail!("output artifact already exists; refusing to overwrite it: {}", artifact.display());
         }
+        let manifest = ArtifactManifest::path_beside(artifact)?;
+        if manifest.exists() {
+            bail!("output manifest already exists; refusing to overwrite it: {}", manifest.display());
+        }
         let parent = artifact
             .parent()
             .filter(|parent| !parent.as_os_str().is_empty())
-- 
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