From c5d383a797cd32a38bd810de253505afe101addd Mon Sep 17 00:00:00 2001
From: phaer <hello@phaer.org>
Date: Wed, 9 Apr 2025 12:19:13 +0200
Subject: [PATCH] virtualisation/disk-image: use mkImageMediaOverride...

...for filesystem options. Before this change, users would typically encounter conflicting option definitions when trying to build an image for a generic nixos closure, i.e. `nixos-rebuild build-image --image-variant qemu --flake .#my-host`
---
 nixos/modules/virtualisation/disk-image.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nixos/modules/virtualisation/disk-image.nix b/nixos/modules/virtualisation/disk-image.nix
index c524b6627113..ef73e6d4f74a 100644
--- a/nixos/modules/virtualisation/disk-image.nix
+++ b/nixos/modules/virtualisation/disk-image.nix
@@ -37,7 +37,7 @@ in
     boot.loader.systemd-boot.enable = lib.mkDefault cfg.efiSupport;
     boot.growPartition = lib.mkDefault true;
 
-    fileSystems = {
+    fileSystems = lib.mkImageMediaOverride {
       "/" = {
         device = "/dev/disk/by-label/nixos";
         autoResize = true;