nix/disko.nix

{
  standard = { disks ? [ "/dev/vda" ], ... }: {
    # this is my standard partitioning scheme for my machines: an LUKS-encrypted
    # btrfs volume
    disko.devices = {
      disk = {
        primary = {
          type = "disk";
          device = builtins.elemAt disks 0;
          content = {
            type = "gpt";
            partitions = {
              ESP = {
                label = "EFI";
                name = "ESP";
                size = "512M";
                type = "EF00";
                content = {
                  type = "filesystem";
                  format = "vfat";
                  mountpoint = "/boot";
                  mountOptions = [
                    "defaults"
                  ];
                };
              };
              luks = {
                size = "100%";
                content = {
                  type = "luks";
                  name = "crypted";
                  extraOpenArgs = [ "--allow-discards" ];
                  # if you want to use the key for interactive login be sure there is no trailing newline
                  # for example use `echo -n "password" > /tmp/secret.key`
                  keyFile = "/tmp/secret.key"; # Interactive
                  # settings.keyFile = "/tmp/password.key";
                  # additionalKeyFiles = ["/tmp/additionalSecret.key"];
                  content = {
                    type = "btrfs";
                    extraArgs = [ "-f" ];
                    subvolumes = {
                      "/root" = {
                        mountpoint = "/";
                        mountOptions = [ "compress=zstd" "noatime" ];
                      };
                      "/home" = {
                        mountpoint = "/home";
                        mountOptions = [ "compress=zstd" "noatime" ];
                      };
                      "/nix" = {
                        mountpoint = "/nix";
                        mountOptions = [ "compress=zstd" "noatime" ];
                      };
                    };
                  };
                };
              };
            };
          };
        };
      };
    };
  };
  unencrypted = { disks ? [ "/dev/vda" ], ... }: {
    disko.devices = {
      disk = {
        primary = {
          type = "disk";
          device = builtins.elemAt disks 0;
          content = {
            type = "gpt";
            partitions = {
              ESP = {
                label = "EFI";
                name = "ESP";
                size = "512M";
                type = "EF00";
                content = {
                  type = "filesystem";
                  format = "vfat";
                  mountpoint = "/boot";
                  mountOptions = [
                    "defaults"
                  ];
                };
              };
              root = {
                size = "100%";
                content = {
                  type = "btrfs";
                  extraArgs = [ "-f" ];
                  subvolumes = {
                    "/root" = {
                      mountpoint = "/";
                      mountOptions = [ ];
                    };
                    "/home" = {
                      mountpoint = "/home";
                      mountOptions = [ "compress=zstd" ];
                    };
                    "/nix" = {
                      mountpoint = "/nix";
                      mountOptions = [ "compress=zstd" "noatime" ];
                    };
                  };
                };
              };
            };
          };
        };
      };
    };
  };
}