diff --git a/modules/nixos/services/grocy/default.nix b/modules/nixos/services/grocy/default.nix
index 87927d6..4a3183e 100644
--- a/modules/nixos/services/grocy/default.nix
+++ b/modules/nixos/services/grocy/default.nix
@@ -36,5 +36,8 @@ in
       forceSSL = true;
       useACMEHost = config.networking.domain;
     };
+
+    # FIXME: backup
+    # FIXME: persistence
   };
 }
diff --git a/modules/nixos/services/miniflux/default.nix b/modules/nixos/services/miniflux/default.nix
index 6d9ffc8..4667912 100644
--- a/modules/nixos/services/miniflux/default.nix
+++ b/modules/nixos/services/miniflux/default.nix
@@ -49,5 +49,8 @@ in
         inherit (cfg) port;
       }
     ];
+
+    # FIXME: backup
+    # FIXME: persistence
   };
 }
diff --git a/modules/nixos/services/tandoor-recipes/default.nix b/modules/nixos/services/tandoor-recipes/default.nix
index 83177c8..3688363 100644
--- a/modules/nixos/services/tandoor-recipes/default.nix
+++ b/modules/nixos/services/tandoor-recipes/default.nix
@@ -76,5 +76,8 @@ in
         inherit (cfg) port;
       }
     ];
+
+    # FIXME: backup
+    # FIXME: persistence
   };
 }
diff --git a/modules/nixos/services/vikunja/default.nix b/modules/nixos/services/vikunja/default.nix
index 1cdef5f..076dd4a 100644
--- a/modules/nixos/services/vikunja/default.nix
+++ b/modules/nixos/services/vikunja/default.nix
@@ -119,5 +119,7 @@ in
         config.services.vikunja.settings.files.basepath
       ];
     };
+
+    # FIXME: persistence
   };
 }
diff --git a/modules/nixos/system/persist/default.nix b/modules/nixos/system/persist/default.nix
index 4c0682c..18302f3 100644
--- a/modules/nixos/system/persist/default.nix
+++ b/modules/nixos/system/persist/default.nix
@@ -60,6 +60,7 @@ in
       ++ (lib.optionals config.virtualisation.docker.enable [
         "/var/lib/docker"
       ])
+      # FIXME: podman
       ++ cfg.directories
       ;
     };