95 lines
2.5 KiB
Nix
95 lines
2.5 KiB
Nix
{ lib, inputs, ... }:
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let
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inherit (lib.modules) mkMerge mkIf mkAfter;
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in
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{
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flake.modules.nixos.default =
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{ hostConfig, ... }:
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let
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inherit (hostConfig.machine) root;
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in
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{
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imports = [ inputs.disko.nixosModules.disko ];
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config = mkMerge [
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{
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# BTRFS - may add more later on
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boot.initrd.kernelModules = [ "dm-snapshot" ];
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disko.devices.disk.main = {
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device = root.drive;
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content.type = "gpt";
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content.partitions = {
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boot = {
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name = "boot";
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size = "1M";
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type = "EF02";
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};
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esp = {
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name = "ESP";
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size = "500M";
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type = "EF00";
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content = {
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type = "filesystem";
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format = "vfat";
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mountpoint = "/boot";
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};
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};
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swap = {
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size = "4G";
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content = {
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type = "swap";
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resumeDevice = true;
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};
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};
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root = {
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name = "root";
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size = "100%";
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content = {
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type = "lvm_pv";
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vg = "root_vg";
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};
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};
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};
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};
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disko.devices.lvm_vg.root_vg = {
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type = "lvm_vg";
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lvs.root = {
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size = "100%FREE";
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content = {
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type = "btrfs";
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extraArgs = [ "-f" ];
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subvolumes = {
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"/root".mountpoint = "/";
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"/persist" = {
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mountpoint = "/persist";
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mountOptions = [
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"subvol=persist"
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"noatime"
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];
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};
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"/nix" = {
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mountpoint = "/nix";
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mountOptions = [
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"subvol=nix"
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"noatime"
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];
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};
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};
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};
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};
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};
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}
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# Ephemeral by default - assumes btrfs
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(mkIf root.ephemeral {
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boot.initrd.postDeviceCommands = mkAfter ''
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mkdir /btrfs_tmp
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mount /dev/root_vg/root /btrfs_tmp
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if [[ -e /btrfs_tmp/root ]]; then
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btrfs subvolume delete "/btrfs_tmp/root"
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fi
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'';
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})
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];
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};
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}
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