nixos/image: use erofs-utils' --hard-dereference flag

to make image builds reproducible between systems with nix store optimization enables/disabled. Signed-off-by: Paul Meyer <[email protected]>
edgelesssys · Dec 20, 2024 · e28d2af · e28d2af
1 parent bfabdb6
commit e28d2af
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/packages/nixos/image.nix b/packages/nixos/image.nix
@@ -28,6 +28,12 @@ in
       name = "image-podvm-gpu";
       inherit (config.system.image) version;
 
+      mkfsOptions.erofs = [
+        # Dereference hardlinks to avoid different number of inodes between images
+        # built on systems with nix store optimization enabled and disabled.
+        "--hard-dereference"
+      ];
+
       # This defines the actual partition layout.
       partitions = {
         # EFI System Partition, holds the UKI.