99 lines
2.6 KiB
Nix
99 lines
2.6 KiB
Nix
{
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config,
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pkgs,
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lib,
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modulesPath,
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...
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}:
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{
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imports = [
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"${modulesPath}/image/repart.nix"
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];
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image.repart =
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let
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efiArch = pkgs.stdenv.hostPlatform.efiArch;
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in
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{
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name = config.boot.uki.name;
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split = true;
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mkfsOptions = {
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erofs = [
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# "-zzstd,6" # Zstd compression
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"-T0" # Fixed timestamp for all files
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"-Efragments,dedupe,ztailpacking" # Extended options
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];
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};
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partitions = {
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"esp" = {
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contents = {
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"/EFI/BOOT/BOOT${lib.toUpper efiArch}.EFI".source = "${pkgs.systemd}/lib/systemd/boot/efi/systemd-boot${efiArch}.efi";
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"/EFI/Linux/${config.system.boot.loader.ukiFile}".source = "${config.system.build.uki}/${config.system.boot.loader.ukiFile}";
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# systemd-boot configuration
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"/loader/loader.conf".source = (
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pkgs.writeText "$out" ''
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timeout 0
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''
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# FIXME: should not be 0 in prod
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);
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};
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repartConfig = {
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Type = "esp";
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UUID = "c12a7328-f81f-11d2-ba4b-00a0c93ec93b"; # Well known
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Format = "vfat";
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SizeMinBytes = "256M";
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SplitName = "-";
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};
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};
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"store" = {
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storePaths = [ config.system.build.toplevel ];
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stripNixStorePrefix = true;
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repartConfig = {
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Type = "linux-generic";
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Label = "${config.boot.uki.name}_${config.system.image.version}";
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Format = "erofs";
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Minimize = "best";
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ReadOnly = "yes";
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SizeMinBytes = "1G";
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SizeMaxBytes = "1G";
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SplitName = "store";
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};
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};
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# Placeholder for the second installed Nix store.
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"store-empty" = {
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repartConfig = {
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Type = "linux-generic";
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Label = "_empty";
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Minimize = "off";
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SizeMinBytes = "1G";
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SizeMaxBytes = "1G";
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SplitName = "-";
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};
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};
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# Persistent storage
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"var" = {
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repartConfig = {
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Type = "var";
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UUID = "4d21b016-b534-45c2-a9fb-5c16e091fd2d"; # Well known
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Format = "xfs";
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Label = "nixos-persistent";
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Minimize = "off";
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# Has to be large enough to hold update files.
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SizeMinBytes = "2G";
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SizeMaxBytes = "2G";
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SplitName = "-";
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# Wiping this gives us a clean state.
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FactoryReset = "yes";
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};
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};
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};
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};
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}
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