From ea8c3f274dbf02fdbeaca0dc32017455ab01df45 Mon Sep 17 00:00:00 2001
From: Emery Hemingway <ehmry@posteo.net>
Date: Tue, 29 Dec 2020 15:14:50 +0100
Subject: [PATCH] force qcow2 format for boot images

---
 nixos-modules/lib/make-bootable-image.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nixos-modules/lib/make-bootable-image.nix b/nixos-modules/lib/make-bootable-image.nix
index 0e23fc0..be56d95 100644
--- a/nixos-modules/lib/make-bootable-image.nix
+++ b/nixos-modules/lib/make-bootable-image.nix
@@ -64,6 +64,6 @@ pkgs.stdenv.mkDerivation {
       start=$espSectorOffset, type=$efiUuid
     EOF
 
-    qemu-img convert $img $out
+    qemu-img convert -f raw -O qcow2 $img $out
   '';
 }