Minecraft server with SHB

configuration.nix

{ config, pkgs, ... }:
let
  hostname = "myhost";

  backupCfg =
    {
      enable ? true,
      shbOpt ? null,
      timerConfig ? {
        OnBootSec = "15min";
        OnUnitActiveSec = "1h";
        RandomizedDelaySec = "7min";
      },
      s3TimerConfig ? {
        OnCalendar = "*-*-* 03:00:00";
        RandomizedDelaySec = "1h";
      },
    }:
    name:
    let
      bck = (if shbOpt != null then shbOpt else config.shb.${name}).backup.request;
    in
    {
      shb.restic.instances."${name}-local" = {
        request = bck;
        settings = {
          enable = if enable then true else shbOpt.enable;

          passphrase.result = config.shb.sops.secret."restic/passphrases/${name}".result;

          repository = {
            path = "/srv/backup/restic/${hostname}/${name}";
            timerConfig = timerConfig // {
              FixedRandomDelay = true;
            };
          };

          retention = {
            keep_within = "1d";
            keep_hourly = 24;
            keep_daily = 7;
            keep_weekly = 4;
            keep_monthly = 6;
          };

          limitUploadKiBs = 8000;
          limitDownloadKiBs = 8000;
        };
      };
      shb.restic.instances."${name}-s3" = {
        request = bck;
        settings = {
          enable = if enable then true else shbOpt.enable;

          passphrase.result = config.shb.sops.secret."restic/passphrases/${name}".result;

          repository = {
            path = "s3:s3.us-west-000.backblazeb2.com/${hostname}-backup/${name}";
            timerConfig = s3TimerConfig // {
              FixedRandomDelay = true;
            };
            secrets = {
              AWS_ACCESS_KEY_ID.source = config.sops.secrets."backup/b2/access_key_id/${name}".path;
              AWS_SECRET_ACCESS_KEY.source = config.sops.secrets."backup/b2/secret_access_key/${name}".path;
            };
          };

          retention = {
            keep_within = "1d";
            keep_hourly = 24;
            keep_daily = 7;
            keep_weekly = 4;
            keep_monthly = 6;
          };

          limitUploadKiBs = 3000;
          limitDownloadKiBs = 3000;
        };
      };
      shb.sops.secret."restic/passphrases/${name}" = {
        request = config.shb.restic.instances."${name}-local".settings.passphrase.request;
      };
      shb.sops.secret."backup/b2/access_key_id/${name}" = {
        request = config.shb.restic.instances."${name}-local".settings.passphrase.request;
        settings.key = "backup/b2/access_key_id";
      };
      shb.sops.secret."backup/b2/secret_access_key/${name}" = {
        request = config.shb.restic.instances."${name}-local".settings.passphrase.request;
        settings.key = "backup/b2/secret_access_key";
      };
      shb.sops.secret."backup/skaraboxJean/access_key_id/${name}" = {
        request = config.shb.restic.instances."${name}-local".settings.passphrase.request;
        settings.key = "backup/skaraboxJean/access_key_id";
      };
      shb.sops.secret."backup/skaraboxJean/secret_access_key/${name}" = {
        request = config.shb.restic.instances."${name}-local".settings.passphrase.request;
        settings.key = "backup/skaraboxJean/secret_access_key";
      };
    };
in
{
  lib.mkMerge = [
    {
      shb.zfs.pools.root.datasets."safe/minecraft" = {
        path = config.services.minecraft-servers.dataDir;
        owner = "minecraft";
        group = "minecraft";
      };
      shb.sanoid.backup."root/safe/minecraft" = {
        request = config.shb.zfs.pools.root.datasets."safe/minecraft".datasetBackup.request;
        settings.useTemplate = [ "main" ];
      };

      services.minecraft-servers = {
        enable = true;
        eula = true;

        openFirewall = true;

        servers.main = {
          enable = true;

          package = pkgs.neoforgeServers.neoforge-1_21_1;

          serverProperties = {
            server-port = 43000;
            difficulty = "hard";
            gamemode = "survival";
            max-players = 5;
            motd = "My Minecraft server!";
            enforce-secure-profile = false;
            online-mode = false;
            white-list = false;
            allow-cheats = true;
          };
          jvmOpts = "-Xms4092M -Xmx4092M -XX:+UseG1GC -XX:ParallelGCThreads=2 -XX:MinHeapFreeRatio=5 -XX:MaxHeapFreeRatio=10";

          symlinks = {
            # nix shell github:Infinidoge/nix-minecraft#nix-modrinth-prefetch
            # nix-modrinth-prefetch KSgki4uc
            mods = pkgs.linkFarmFromDrvs "mods" (
              builtins.attrValues {
                # https://modrinth.com/mod/journeymap
                JourneyMap = pkgs.fetchurl {
                  url = "https://cdn.modrinth.com/data/lfHFW1mp/versions/E44vwUJO/journeymap-neoforge-1.21.1-6.0.0-beta.66.jar";
                  sha512 = "a6e6fc436020c4d4d3625147c271b04535765e0ae9c59703aa66cd1d3c986e077ddafe2daf9c00b45fd9f4dfbf82ab0f1ca1ea730253ea9e0b4d954729b2c632";
                  # url = "https://cdn.modrinth.com/data/lfHFW1mp/versions/HSajmA5j/journeymap-neoforge-1.21.5-6.0.0-beta.52.jar";
                  # sha512 = "sha512-EBX4pZkqYNM2zIs2RRXR0W6bW5wrTlJIqGJ3ScXsI7msAylAdpfjHkgxjINVDspePTGoOnBrlq4gnDPpuLPZww==";
                };
                # https://modrinth.com/mod/sophisticated-backpacks
                SophisticatedBackpacks = pkgs.fetchurl {
                  url = "https://cdn.modrinth.com/data/TyCTlI4b/versions/ZMuJ1TI7/sophisticatedbackpacks-1.21.1-3.25.44.1736.jar";
                  sha512 = "0704060b2d0e2e88bc771da1b26fe262563ac6a814f129a1207782d7edbac8bdc1b4057669c5bc94976e6eb74c6386c0735f93628b2d1f23e7eac4ae6562e185";
                  # url = "https://cdn.modrinth.com/data/TyCTlI4b/versions/TbHJGS23/sophisticatedbackpacks-1.21.5-3.25.45.1737.jar";
                  # sha512 = "sha512-y+zMncOEF2squyfjOZ4PdWWHSOK2Lx0vF20U1krkC0fPoxc5g2Fw+f5M/uPXURVvxBWxEsXTZb/OtBYsJ95z3w==";
                };
                # https://modrinth.com/mod/sophisticated-core
                SophisticatedCore = pkgs.fetchurl {
                  url = "https://cdn.modrinth.com/data/nmoqTijg/versions/ErcuCe4o/sophisticatedcore-1.21.1-1.4.35.1823.jar";
                  sha512 = "c2c9c4e9e99a43292297f92b1f4dcfa1c9000d9aa684fed07153a4896ae9791d90f29cf0d8365c61d1915c5a6ee4c5cb881eee6c2385b562770281c3b700c0f0";
                };
                # https://modrinth.com/mod/jei
                JustEnoughItems = pkgs.fetchurl {
                  url = "https://cdn.modrinth.com/data/u6dRKJwZ/versions/YAcQ6elZ/jei-1.21.1-neoforge-19.27.0.340.jar";
                  sha512 = "8bad8eb3c8e974f867e23e4d74598f603c5fbf03eb5356a386dd37cb9fa23e08ad1f58be6b7be50d2fbf9d3fbfaeac8584c70ced736df4b8f82c7c75be242998";
                  # url = "https://cdn.modrinth.com/data/u6dRKJwZ/versions/Up8I2nu2/jei-1.21.5-neoforge-21.4.0.27.jar";
                  # sha512 = "sha512-qVyHvI7XUqD2s1pyFeY2IpOuerSWaL0c0hdrCNoMLXfjQFG7HW+utFB1Ggnssuc1cYKz/857n9M6JmeBOowk3A==";
                };
                # https://modrinth.com/mod/citadel
                Citadel = pkgs.fetchurl {
                  url = "https://cdn.modrinth.com/data/jJfV67b1/versions/uzrkhBpn/citadel-2.7.0-1.21.1.jar";
                  sha512 = "d77d8d25279d877ef94f1e48e770547ba2fbee2f01ed151aa932c6e36ed5dd7f846db096f7b1f9c13f49a3e2fd5de434d20a0924a3232e06d20c7ca5f46e47f6";
                };
                # https://modrinth.com/mod/alexs-mobs(1.21.1)
                AlexsMobs = pkgs.fetchurl {
                  url = "https://cdn.modrinth.com/data/EmNhnNnt/versions/KSgki4uc/alexsmobs-1.22.17.jar";
                  sha512 = "9f57f20693bb187c54f6d68dc34592b87d0e55a5a4628ad097b0aa39afe165f4a834b83b6590d803e64bac0b1230a8f46369bfe45851a3cc964cf3d88f235277";
                };
                # https://modrinth.com/mod/farmers-delight
                FarmersDelight = pkgs.fetchurl {
                  url = "https://cdn.modrinth.com/data/R2OftAxM/versions/9gp7w8NC/FarmersDelight-1.21.1-1.3.1.jar";
                  sha512 = "596340db019049e8da066df13cedb76eb06a8e877c86fd10b38332317b5fd5001cad485a6de87e3a8bf0423d87a1ffbdd51a86f6c06560f40995d68fe05edf95";
                };
              }
            );
          };
        };
      };
      allowedUnfreePackagesRegexs = [
        "neoforge"
      ];

    }
    (
      backupCfg {
        shbOpt.backup.request = {
          user = "minecraft";
          sourceDirectories = [
            config.services.minecraft-server.dataDir
          ];
        };
      } "minecraft"
    )
  ];
}

flake.nix

// This is pseudo code
{
  inputs = {
    nix-minecraft.url = "github:Infinidoge/nix-minecraft";
  };
  
  outputs = inputs: {
    nixosConfigurations = {
      myhost = nixpkgs.lib.nixosSystem {
        modules = [
          inputs.nix-minecraft.nixosModules.minecraft-servers
        ];
      };
    };
  };
}