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nixos/iso-image: graphicalGrub -> forceTextMode

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This helps keep logic simpler, as what we do is forcing text mode, which
means the non-default case is `truthy`, making things easier to digest
in the config file.

Also renaming this option is considered "internal", since it lives only
within the `iso-image` namespace, and also not a breaking change since
it was not part of a stable release.
This commit is contained in:
Samuel Dionne-Riel 2023-08-14 18:11:31 -04:00
parent 16d640c810
commit 7fa7158c60
1 changed files with 9 additions and 5 deletions
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14
nixos/modules/installer/cd-dvd/iso-image.nix
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@ -331,7 +331,7 @@ let
cat <<EOF > $out/EFI/boot/grub.cfg
set with_fonts=false
set textmode=${boolToString (!config.isoImage.graphicalGrub)}
set textmode=${boolToString (config.isoImage.forceTextMode)}
# If you want to use serial for "terminal_*" commands, you need to set one up:
# Example manual configuration:
# → serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1
@ -709,13 +709,17 @@ in
'';
};
isoImage.graphicalGrub = mkOption {
default = true;
isoImage.forceTextMode = mkOption {
default = false;
type = types.bool;
example = true;
description = lib.mdDoc ''
Whether to use textmode or graphical grub.
false means we use textmode grub.
Whether to use text mode instead of graphical grub.
A value of `true` means graphical mode is not tried to be used.
This is useful for validating that graphics mode usage is not at the root cause of a problem with the iso image.
If text mode is required off-handedly (e.g. for serial use) you can use the `T` key, after being prompted, to use text mode for the current boot.
'';
};