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make-disk-image: fix build for systems that use boot.loader.grub.devices

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config.boot.loader.grub.device is just an alias that gets assigned to config.boot.loader.grub.devices.
If config.boot.loader.grub.device is set to null, it will fail with the following error
as described in https://github.com/nix-community/nixos-generators/issues/339

(cherry picked from commit d0126c0508)
This commit is contained in:
Jörg Thalheim 2024-06-12 08:15:16 +02:00 committed by github-actions[bot]
parent ff5faae57c
commit c902526b89
1 changed files with 5 additions and 4 deletions
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9
nixos/lib/make-disk-image.nix
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@ -603,10 +603,11 @@ let format' = format; in let
${lib.optionalString installBootLoader ''
# In this throwaway resource, we only have /dev/vda, but the actual VM may refer to another disk for bootloader, e.g. /dev/vdb
# Use this option to create a symlink from vda to any arbitrary device you want.
${optionalString (config.boot.loader.grub.enable && config.boot.loader.grub.device != "/dev/vda") ''
mkdir -p $(dirname ${config.boot.loader.grub.device})
ln -s /dev/vda ${config.boot.loader.grub.device}
''}
${optionalString (config.boot.loader.grub.enable) (lib.concatMapStringsSep " " (device:
lib.optionalString (device != "/dev/vda") ''
mkdir -p "$(dirname ${device})"
ln -s /dev/vda ${device}
'') config.boot.loader.grub.devices)}
# Set up core system link, bootloader (sd-boot, GRUB, uboot, etc.), etc.