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# Copyright 2025 Shota FUJI <pockawoooh@gmail.com>
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
# OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
# PERFORMANCE OF THIS SOFTWARE.
#
# SPDX-License-Identifier: 0BSD
#
# Disk partition configurations for GMKtec EVO-T1, with NVMe 2TB SSD installed.
#
# To apply partition and format, run "disko" CLI on target machine.
#
# ```sh
# sudo nix --experimental-features "nix-command flakes" \
#   run github:nix-community/disko/latest -- \
#     --mode destroy,format,mount $PATH_TO_THIS_FILE
# ```
#
# https://github.com/nix-community/disko/blob/master/docs/quickstart.md

{
  # Pre-installed SSD.
  disko.devices.disk.main = {
    type = "disk";
    device = "/dev/nvme1n1";
    content = {
      type = "gpt";

      # ESP ... EFI system partition
      # https://wiki.archlinux.org/title/EFI_system_partition
      partitions.ESP = {
        size = "512M";
        type = "EF00";
        content = {
          type = "filesystem";
          format = "vfat";
          mountpoint = "/boot";
          mountOptions = [ "umask=0777" ];
        };
      };

      partitions.root = {
        size = "100%";
        content = {
          type = "btrfs";

          # Override existing partition.
          extraArgs = [ "-f" ];

          subvolumes = {
            "/root" = {
              mountpoint = "/";
              mountOptions = [
                "compress=zstd"
                "noatime"
              ];
            };

            "/incus" = {
              mountpoint = "/var/lib/incus";
              mountOptions = [ "compress=zstd" ];
            };

            "/nix" = {
              mountpoint = "/nix";
              mountOptions = [
                "compress=zstd"
                "noatime"
              ];
            };

            "/swap" = {
              mountpoint = "/swap/swapfile";
              swap.swapfile.size = "64G";
            };
          };
        };
      };
    };
  };

  # Additional SSD installed by me.
  disko.devices.disk.data = {
    type = "disk";
    device = "/dev/nvme0n1";
    content = {
      type = "gpt";

      partitions.root = {
        size = "100%";
        content = {
          type = "btrfs";

          # Override existing partition.
          extraArgs = [ "-f" ];

          subvolumes = {
            "/home" = {
              mountpoint = "/home";
              mountOptions = [ "compress=zstd" ];
            };
          };
        };
      };
    };
  };
}