From 824c9ac5c977ed67c20b9fae7e16c50d124dd55c Mon Sep 17 00:00:00 2001
From: Robin Bate Boerop <robin@engineml.com>
Date: Mon, 3 Apr 2023 21:12:13 +0300
Subject: [PATCH] nix-prefetch-docker: handle overrides correctly

Without this change, the `--os` and `--arch` switches are disregarded
for operations involving `skopeo inspect` invocations. This means that,
for example, one cannot fetch Linux images while on macOS.
---
 pkgs/build-support/docker/nix-prefetch-docker | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/build-support/docker/nix-prefetch-docker b/pkgs/build-support/docker/nix-prefetch-docker
index 5798ab5984f1..f551d37cda96 100755
--- a/pkgs/build-support/docker/nix-prefetch-docker
+++ b/pkgs/build-support/docker/nix-prefetch-docker
@@ -38,7 +38,7 @@ get_image_digest(){
         imageTag="latest"
     fi
 
-    skopeo --insecure-policy --tmpdir=$TMPDIR inspect "docker://$imageName:$imageTag" | jq '.Digest' -r
+    skopeo --override-os "${os}" --override-arch "${arch}" --insecure-policy --tmpdir=$TMPDIR inspect "docker://$imageName:$imageTag" | jq '.Digest' -r
 }
 
 get_name() {