os/modules/x-os/boot.nix

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{ config, pkgs, lib, ... }:
let
cfg = config.pub-solar.x-os;
in
with lib; {
options = {
pub-solar.x-os.keyfile = mkOption {
type = types.str;
description = "Keyfile location";
};
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pub-solar.x-os.enableBootLoader = mkOption {
type = types.bool;
default = false;
description = "Whether to include the grub bootloader. Turn this off for ISO images.";
};
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};
config = {
# Enable plymouth for better experience of booting
boot.plymouth.enable = true;
# Use Keyfile to unlock the root partition to avoid keying in twice.
# Allow fstrim to work on it.
boot.initrd = {
secrets = { "/keyfile.bin" = cfg.keyfile; };
luks.devices."cryptroot" = {
keyFile = "/keyfile.bin";
allowDiscards = true;
fallbackToPassword = true;
};
};
# Use GRUB with encrypted /boot under EFI env.
boot.loader = {
efi.efiSysMountPoint = "/boot/efi";
grub = {
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enable = cfg.enableBootLoader;
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version = 2;
device = "nodev";
efiSupport = true;
enableCryptodisk = true;
};
};
};
}