nix-config/configurations/nixos/defiant/legacy-impermanence.nix

# Legacy impermanence module for defiant
# This module contains all the impermanence configurations that were previously
# handled by individual service modules on the main branch. It allows us to
# merge the storage-refactor branch into main while keeping current functionality,
# and then migrate services one at a time to the new automated impermanence system.
#
# To migrate a service to the new system:
# 1. Remove the service's configuration from this file
# 2. Set `impermanence.enable = true` for that service in configuration.nix
# 3. Remove `impermanence.enable = false` from the service configuration
{
  config,
  lib,
  ...
}: {
  config = lib.mkIf config.storage.impermanence.enable {
    system.activationScripts = {
      "var-lib-private-permissions" = {
        deps = ["specialfs"];
        text = ''
          mkdir -p /persist/system/root/var/lib/private
          chmod 0700 /persist/system/root/var/lib/private
        '';
      };
    };

    environment.persistence."/persist/system/root" = {
      enable = true;
      hideMounts = true;
      directories = lib.mkMerge [
        # PostgreSQL
        (lib.mkIf config.services.postgresql.enable [
          {
            directory = "/var/lib/postgresql/16";
            user = "postgres";
            group = "postgres";
          }
        ])

        # Reverse Proxy (ACME)
        (lib.mkIf config.services.reverseProxy.enable [
          {
            directory = "/var/lib/acme";
            user = "acme";
            group = "acme";
          }
        ])

        # Ollama
        (lib.mkIf config.services.ollama.enable [
          {
            directory = "/var/lib/private/ollama";
            user = config.services.ollama.user;
            group = config.services.ollama.group;
            mode = "0700";
          }
        ])

        # Tailscale
        (lib.mkIf config.services.tailscale.enable [
          {
            directory = "/var/lib/tailscale";
            user = "root";
            group = "root";
          }
        ])

        # Syncthing
        (lib.mkIf config.services.syncthing.enable [
          {
            directory = "/mnt/sync";
            user = "syncthing";
            group = "syncthing";
          }
          {
            directory = "/etc/syncthing";
            user = "syncthing";
            group = "syncthing";
          }
        ])

        # Fail2ban
        (lib.mkIf config.services.fail2ban.enable [
          {
            directory = "/var/lib/fail2ban";
            user = "fail2ban";
            group = "fail2ban";
          }
        ])

        # Jellyfin (data/cache only - media is on separate dataset)
        (lib.mkIf config.services.jellyfin.enable [
          {
            directory = "/var/lib/jellyfin";
            user = "jellyfin";
            group = "jellyfin";
          }
          {
            directory = "/var/cache/jellyfin";
            user = "jellyfin";
            group = "jellyfin";
          }
        ])

        # Immich
        (lib.mkIf config.services.immich.enable [
          {
            directory = "/var/lib/immich";
            user = "immich";
            group = "immich";
          }
        ])

        # Forgejo
        (lib.mkIf config.services.forgejo.enable [
          {
            directory = "/var/lib/forgejo";
            user = "forgejo";
            group = "forgejo";
          }
        ])

        # Actual
        (lib.mkIf config.services.actual.enable [
          {
            directory = "/var/lib/private/actual";
            user = "actual";
            group = "actual";
          }
        ])

        # Home Assistant
        (lib.mkIf config.services.home-assistant.enable [
          {
            directory = "/var/lib/hass";
            user = "hass";
            group = "hass";
          }
        ])

        # Paperless
        (lib.mkIf config.services.paperless.enable [
          {
            directory = "/var/lib/paperless";
            user = "paperless";
            group = "paperless";
          }
        ])

        # Crab-hole
        (lib.mkIf config.services.crab-hole.enable [
          {
            directory = "/var/lib/private/crab-hole";
            user = "crab-hole";
            group = "crab-hole";
          }
        ])

        # qBittorrent (config only - media is on separate dataset)
        (lib.mkIf config.services.qbittorrent.enable [
          {
            directory = "/var/lib/qBittorrent/";
            user = "qbittorrent";
            group = "qbittorrent";
          }
        ])

        # Sonarr
        (lib.mkIf config.services.sonarr.enable [
          {
            directory = "/var/lib/sonarr/.config/NzbDrone";
            user = "sonarr";
            group = "sonarr";
          }
        ])

        # Radarr
        (lib.mkIf config.services.radarr.enable [
          {
            directory = "/var/lib/radarr/.config/Radarr";
            user = "radarr";
            group = "radarr";
          }
        ])

        # Bazarr
        (lib.mkIf config.services.bazarr.enable [
          {
            directory = "/var/lib/bazarr";
            user = "bazarr";
            group = "bazarr";
          }
        ])

        # Lidarr
        (lib.mkIf config.services.lidarr.enable [
          {
            directory = "/var/lib/lidarr/.config/Lidarr";
            user = "lidarr";
            group = "lidarr";
          }
        ])

        # Jackett
        (lib.mkIf config.services.jackett.enable [
          {
            directory = "/var/lib/jackett/.config/Jackett";
            user = "jackett";
            group = "jackett";
          }
        ])

        # FlareSolverr
        (lib.mkIf config.services.flaresolverr.enable [
          {
            directory = "/var/lib/flaresolverr";
            user = "flaresolverr";
            group = "flaresolverr";
          }
        ])
      ];
    };

    # Jellyfin media on separate dataset (matching main)
    environment.persistence."/persist/system/jellyfin" = lib.mkIf config.services.jellyfin.enable {
      enable = true;
      hideMounts = true;
      directories = [
        {
          directory = config.services.jellyfin.media_directory;
          user = "jellyfin";
          group = "jellyfin_media";
          mode = "1770";
        }
      ];
    };

    # qBittorrent media on separate dataset (matching main)
    environment.persistence."/persist/system/qbittorrent" = lib.mkIf config.services.qbittorrent.enable {
      enable = true;
      hideMounts = true;
      directories = [
        {
          directory = config.services.qbittorrent.mediaDir;
          user = "qbittorrent";
          group = "qbittorrent";
          mode = "1775";
        }
      ];
    };

    # /var/log persistence (matching main)
    environment.persistence."/persist/system/var/log" = {
      enable = true;
      hideMounts = true;
      directories = [
        "/var/log"
      ];
    };
  };
}