{ config, ... }:

{
  disko.devices = {
    disk.main = {
      type = "disk";
      device = "/dev/sda";

      # Only used when building a standalone disk image directly (`nix build
      # .#nixosConfigurations.<host>.config.system.build.diskoImagesScript`)
      # rather than formatting a real device — see docs/proxmox-images.md.
      # imageSize sets the .raw file's total size (root's "100%" below fills
      # whatever's left after ESP + swap within it); imageName keeps each
      # host's image distinctly named instead of every proxmox-* host
      # producing an identical "main.raw".
      imageSize = "20G";
      imageName = config.networking.hostName;

      content = {
        type = "gpt";

        partitions = {
          esp = {
            priority = 1;
            name = "ESP";
            size = "512M";
            type = "EF00";

            content = {
              type = "filesystem";
              format = "vfat";
              mountpoint = "/boot";
              mountOptions = [ "umask=0077" ];
              extraArgs = [
                "-F"
                "32"
                "-n"
                "boot"
              ];
            };
          };

          swap = {
            size = "8G";

            content = {
              type = "swap";
              randomEncryption = false;
              # label = "swap";
            };
          };

          root = {
            size = "100%";

            content = {
              type = "filesystem";
              format = "ext4";
              mountpoint = "/";
              extraArgs = [
                "-L"
                "nixos"
              ];
            };
          };
        };
      };
    };
  };
}