.dotfiles/hosts/nixos/toto/disk-config.nix

# NOTE: ... is needed because dikso passes diskoFile
{ lib
, pkgs
, swapSize
, withSwap ? true
, withEncryption ? true
, withImpermanence ? true
, ...
}:
{
  disko.devices = {
    disk = {
      disk0 = {
        type = "disk";
        device = "/dev/vda";
        content = {
          type = "gpt";
          partitions = {
            ESP = {
              priority = 1;
              name = "ESP";
              size = "512M";
              type = "EF00";
              content = {
                type = "filesystem";
                format = "vfat";
                mountpoint = "/boot";
                mountOptions = [ "defaults" ];
              };
            };
            root = lib.mkIf (!withEncryption) {
              size = "100%";
              content = {
                type = "btrfs";
                extraArgs = [ "-f" ]; # force overwrite
                postCreateHook = lib.mkIf withImpermanence ''
                  									  MNTPOINT=$(mktemp -d)
                  										mount "/dev/mapper/root" "$MNTPOINT" -o subvol=/
                  										trap 'umount $MNTPOINT; rm -rf $MNTPOINT' EXIT
                  										btrfs subvolume snapshot -r $MNTPOINT/root $MNTPOINT/root-blank
                '';
                subvolumes = {
                  "@root" = {
                    mountpoint = "/";
                    mountOptions = [
                      "compress=zstd"
                      "noatime"
                    ];
                  };
                  "@persist" = lib.mkIf withImpermanence {
                    mountpoint = "/persist";
                    mountOptions = [
                      "compress=zstd"
                      "noatime"
                    ];
                  };
                  "@nix" = {
                    mountpoint = "/nix";
                    mountOptions = [
                      "compress=zstd"
                      "noatime"
                    ];
                  };
                  "@swap" = lib.mkIf withSwap {
                    mountpoint = "/.swapvol";
                    swap.swapfile.size = "${swapSize}G";
                  };
                };
              };
            };
            luks = lib.mkIf withEncryption {
              size = "100%";
              content = {
                type = "luks";
                name = "cryptroot";
                passwordFile = "/tmp/disko-password"; # this is populated by bootstrap-nixos.sh
                settings = {
                  allowDiscards = true;
                  # https://github.com/hmajid2301/dotfiles/blob/a0b511c79b11d9b4afe2a5e2b7eedb2af23e288f/systems/x86_64-linux/framework/disks.nix#L36
                  crypttabExtraOpts = [
                    "fido2-device=auto"
                    "token-timeout=10"
                  ];
                };
                # Subvolumes must set a mountpoint in order to be mounted,
                # unless their parent is mounted
                content = {
                  type = "btrfs";
                  extraArgs = [ "-f" ]; # force overwrite
                  postCreateHook = lib.mkIf withImpermanence ''
                    									  MNTPOINT=$(mktemp -d)
                    										mount "/dev/mapper/cryptroot" "$MNTPOINT" -o subvol=/
                    										trap 'umount $MNTPOINT; rm -rf $MNTPOINT' EXIT
                    										btrfs subvolume snapshot -r $MNTPOINT/root $MNTPOINT/root-blank
                  '';
                  subvolumes = {
                    "@root" = {
                      mountpoint = "/";
                      mountOptions = [
                        "compress=zstd"
                        "noatime"
                      ];
                    };
                    "@persist" = lib.mkIf withImpermanence {
                      mountpoint = "/persist";
                      mountOptions = [
                        "compress=zstd"
                        "noatime"
                      ];
                    };
                    "@nix" = {
                      mountpoint = "/nix";
                      mountOptions = [
                        "compress=zstd"
                        "noatime"
                      ];
                    };
                    "@swap" = lib.mkIf withSwap {
                      mountpoint = "/.swapvol";
                      swap.swapfile.size = "${swapSize}G";
                    };
                  };
                };
              };
            };
          };
        };
      };
    };
  };

  fileSystems."/persist".neededForBoot = lib.mkIf withImpermanence true;

  environment.systemPackages = [
    pkgs.yubikey-manager # For luks fido2 enrollment before full install
  ];
}