From 4d507152ec295d2a0e85de72136a17807b2a9112 Mon Sep 17 00:00:00 2001
From: crozzy <joseph.crosland@gmail.com>
Date: Mon, 24 Oct 2022 15:38:54 -0700
Subject: [PATCH] fetcher: Add layer hash to error message

In order to better debug errors it helps to have the
layer hash to be able to analyse the offending layer.

Signed-off-by: crozzy <joseph.crosland@gmail.com>
---
 libindex/fetcher.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libindex/fetcher.go b/libindex/fetcher.go
index efb8c22e4..92b28f119 100644
--- a/libindex/fetcher.go
+++ b/libindex/fetcher.go
@@ -95,7 +95,7 @@ func (a *RemoteFetchArena) fetchOne(ctx context.Context, l *claircore.Layer) (do
 			return a.realizeLayer(ctx, l)
 		}):
 			if err := res.Err; err != nil {
-				return err
+				return fmt.Errorf("error realizing layer %s: %w", h, err)
 			}
 			ff = res.Val.(string)
 		case <-ctx.Done():