From c54eafce8e831167f802c3fbd92034dd895ba8b8 Mon Sep 17 00:00:00 2001
From: Arnout Engelen <arnout@bzzt.net>
Date: Sat, 2 Mar 2024 10:01:14 +0100
Subject: [PATCH] prefix hash with hashing algorithm used

This is what the narinfo format also does, and generally common
for hashes in nix.
---
 utils/src/bin/build-hook.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/utils/src/bin/build-hook.rs b/utils/src/bin/build-hook.rs
index b8606c8..29e479e 100644
--- a/utils/src/bin/build-hook.rs
+++ b/utils/src/bin/build-hook.rs
@@ -25,7 +25,7 @@ async fn main() -> Result<()> {
         .split(" ")
         .map(|path| OutputAttestation {
             output_path: path,
-            output_hash: hash_path("sha256", Base32, path).unwrap(),
+            output_hash: format!("sha256:{0}", hash_path("sha256", Base32, path).unwrap()),
         })
         .collect();