diff --git a/nix/apache-kafka.nix b/nix/apache-kafka.nix
index bca66901..53c51fd1 100644
--- a/nix/apache-kafka.nix
+++ b/nix/apache-kafka.nix
@@ -20,20 +20,12 @@ in
 with lib;
 {
   options = {
-    enable = mkEnableOption (lib.mdDoc "Apache Kafka event streaming broker");
-
     port = mkOption {
       description = lib.mdDoc "Port number the broker should listen on.";
       default = 9092;
       type = types.port;
     };
 
-    dataDir = lib.mkOption {
-      type = types.str;
-      default = "./data/${name}";
-      description = lib.mdDoc "The apache-kafka data directory";
-    };
-
     settings = mkOption {
       description = lib.mdDoc ''
         [Kafka broker configuration](https://kafka.apache.org/documentation.html#brokerconfigs)
diff --git a/nix/cassandra.nix b/nix/cassandra.nix
index afa7b0c3..bc194990 100644
--- a/nix/cassandra.nix
+++ b/nix/cassandra.nix
@@ -6,16 +6,8 @@ let
 in
 {
   options = {
-    enable = lib.mkEnableOption name;
-
     package = lib.mkPackageOption pkgs "cassandra" { };
 
-    dataDir = lib.mkOption {
-      type = types.str;
-      default = "./data/${name}";
-      description = "The cassandra data directory";
-    };
-
     listenAddress = lib.mkOption {
       type = types.str;
       description = "Listen address";
diff --git a/nix/clickhouse/default.nix b/nix/clickhouse/default.nix
index 29589cb0..6a4d7d57 100644
--- a/nix/clickhouse/default.nix
+++ b/nix/clickhouse/default.nix
@@ -6,8 +6,6 @@ let
 in
 {
   options = {
-    enable = lib.mkEnableOption name;
-
     package = lib.mkOption {
       type = types.package;
       description = "Which package of clickhouse to use";
@@ -21,12 +19,6 @@ in
       default = 9000;
     };
 
-    dataDir = lib.mkOption {
-      type = types.str;
-      default = "./data/${name}";
-      description = "The clickhouse data directory";
-    };
-
     defaultExtraConfig = lib.mkOption {
       type = yamlFormat.type;
       internal = true;
diff --git a/nix/elasticsearch.nix b/nix/elasticsearch.nix
index bb215b75..c974d218 100644
--- a/nix/elasticsearch.nix
+++ b/nix/elasticsearch.nix
@@ -17,16 +17,8 @@ in
           };
       } 
     '';
-    enable = lib.mkEnableOption name;
-
     package = lib.mkPackageOption pkgs "elasticsearch7" { };
 
-    dataDir = lib.mkOption {
-      type = types.str;
-      default = "./data/${name}";
-      description = "Directory where elasticsearch stores its data.";
-    };
-
     listenAddress = lib.mkOption {
       description = "Elasticsearch listen address.";
       default = "127.0.0.1";
diff --git a/nix/grafana.nix b/nix/grafana.nix
index 29ab6cdc..0c83d028 100644
--- a/nix/grafana.nix
+++ b/nix/grafana.nix
@@ -9,8 +9,6 @@ in
     description = ''
       Configure grafana.
     '';
-    enable = lib.mkEnableOption name;
-
     package = lib.mkPackageOption pkgs "grafana" { };
 
     http_port = lib.mkOption {
@@ -31,12 +29,6 @@ in
       default = "http";
     };
 
-    dataDir = lib.mkOption {
-      type = types.str;
-      description = "Directory where grafana stores its logs and data.";
-      default = "./data/${name}";
-    };
-
     extraConf = lib.mkOption {
       type = iniFormat.type;
       description = "Extra configuration for grafana.";
diff --git a/nix/lib.nix b/nix/lib.nix
index 554ac9ca..653329df 100644
--- a/nix/lib.nix
+++ b/nix/lib.nix
@@ -15,6 +15,12 @@
       ];
       serviceModule = { config, name, ... }: {
         options = {
+          enable = lib.mkEnableOption "Enable the ${service}.<name> service";
+          dataDir = lib.mkOption {
+            type = lib.types.str;
+            default = "./data/${name}";
+            description = "The directory where all data for `${service}.<name>` is stored";
+          };
           namespace = lib.mkOption {
             description = ''
               Namespace for the ${service} service
diff --git a/nix/mysql/default.nix b/nix/mysql/default.nix
index e4bf1276..b3434d07 100644
--- a/nix/mysql/default.nix
+++ b/nix/mysql/default.nix
@@ -6,8 +6,6 @@ with lib.types; let
 in
 {
   options = {
-    enable = lib.mkEnableOption "MySQL process and expose utilities";
-
     package = lib.mkOption {
       type = types.package;
       description = "Which package of MySQL to use";
@@ -15,12 +13,6 @@ in
       defaultText = lib.literalExpression "pkgs.mariadb";
     };
 
-    dataDir = lib.mkOption {
-      type = types.str;
-      default = "./data/${name}";
-      description = "The mysql data directory";
-    };
-
     socketDir = lib.mkOption {
       type = types.nullOr types.str;
       default = config.dataDir;
diff --git a/nix/nginx/default.nix b/nix/nginx/default.nix
index 4ad3b15a..7f21b327 100644
--- a/nix/nginx/default.nix
+++ b/nix/nginx/default.nix
@@ -32,8 +32,6 @@ in
 
 {
   options = {
-    enable = lib.mkEnableOption "nginx";
-
     package = lib.mkOption {
       type = lib.types.package;
       default = pkgs.nginx;
@@ -41,12 +39,6 @@ in
       description = "The nginx package to use.";
     };
 
-    dataDir = lib.mkOption {
-      type = types.str;
-      default = "./data/${name}";
-      description = "The nginx data directory";
-    };
-
     port = lib.mkOption {
       type = types.port;
       default = 8080;
diff --git a/nix/ollama.nix b/nix/ollama.nix
index a4689276..e8f9015b 100644
--- a/nix/ollama.nix
+++ b/nix/ollama.nix
@@ -8,7 +8,6 @@ let
 in
 {
   options = {
-    enable = lib.mkEnableOption "Enable the Ollama service";
     package = lib.mkOption {
       type = types.package;
       default = ollamaPackage;
@@ -25,14 +24,7 @@ in
       example = "0.0.0.0";
       description = "The host on which the Ollama service's REST API will listen";
     };
-    dataDir = lib.mkOption {
-      type = types.str;
-      default = "./data/${name}";
-      description = ''
-        The directory containing the Ollama models.
-        Sets the `OLLAMA_MODELS` environment variable.
-      '';
-    };
+
     keepAlive = lib.mkOption {
       type = types.str;
       default = "5m";
diff --git a/nix/open-webui.nix b/nix/open-webui.nix
index 4fba54dd..bd73fa88 100644
--- a/nix/open-webui.nix
+++ b/nix/open-webui.nix
@@ -5,15 +5,8 @@ let
 in
 {
   options = {
-    enable = lib.mkEnableOption "Open-WebUI server";
     package = lib.mkPackageOption pkgs "open-webui" { };
 
-    dataDir = lib.mkOption {
-      type = types.str;
-      default = "./data/${name}";
-      description = "The Open-WebUI data directory";
-    };
-
     host = lib.mkOption {
       type = types.str;
       default = "127.0.0.1";
diff --git a/nix/pgadmin.nix b/nix/pgadmin.nix
index 009aa62a..674860f7 100644
--- a/nix/pgadmin.nix
+++ b/nix/pgadmin.nix
@@ -25,8 +25,6 @@ let
 in
 {
   options = {
-    enable = lib.mkEnableOption name;
-
     package = lib.mkPackageOption pkgs "pgadmin4" { };
 
     host = lib.mkOption {
@@ -58,12 +56,6 @@ in
       default = 6;
     };
 
-    dataDir = lib.mkOption {
-      type = types.str;
-      default = "./data/${name}";
-      description = "The pgadmin4 data directory";
-    };
-
     extraDefaultConfig = lib.mkOption {
       type = pyType;
       internal = true;
diff --git a/nix/postgres/default.nix b/nix/postgres/default.nix
index 5358da76..1df1d26f 100644
--- a/nix/postgres/default.nix
+++ b/nix/postgres/default.nix
@@ -5,8 +5,6 @@ with lib.types; let
 in
 {
   options = {
-    enable = lib.mkEnableOption name;
-
     package = lib.mkOption {
       type = types.package;
       description = "Which package of postgresql to use";
@@ -44,12 +42,6 @@ in
       '';
     };
 
-    dataDir = lib.mkOption {
-      type = lib.types.str;
-      default = "./data/${name}";
-      description = "The DB data directory";
-    };
-
     socketDir = lib.mkOption {
       type = lib.types.str;
       default = "";
diff --git a/nix/prometheus.nix b/nix/prometheus.nix
index 6714bd80..f3fc28a0 100644
--- a/nix/prometheus.nix
+++ b/nix/prometheus.nix
@@ -5,8 +5,6 @@ let
 in
 {
   options = {
-    enable = lib.mkEnableOption name;
-
     package = lib.mkPackageOption pkgs "prometheus" { };
 
     port = lib.mkOption {
@@ -21,12 +19,6 @@ in
       description = lib.mdDoc "Address to listen on for the web interface, API, and telemetry";
     };
 
-    dataDir = lib.mkOption {
-      type = types.str;
-      default = "./data/${name}";
-      description = "The prometheus data directory";
-    };
-
     extraFlags = lib.mkOption {
       type = types.listOf types.str;
       default = [ ];
diff --git a/nix/redis-cluster.nix b/nix/redis-cluster.nix
index f72eeb6c..ea9626d7 100644
--- a/nix/redis-cluster.nix
+++ b/nix/redis-cluster.nix
@@ -4,16 +4,8 @@ let
 in
 {
   options = {
-    enable = lib.mkEnableOption name;
-
     package = lib.mkPackageOption pkgs "redis" { };
 
-    dataDir = lib.mkOption {
-      type = types.str;
-      default = "./data/${name}";
-      description = "The redis-cluster data directory (common for all nodes).";
-    };
-
     nodes = lib.mkOption {
       type = types.attrsOf (types.submodule {
         options = {
diff --git a/nix/redis.nix b/nix/redis.nix
index 8c36a620..decef6f0 100644
--- a/nix/redis.nix
+++ b/nix/redis.nix
@@ -5,16 +5,8 @@ let
 in
 {
   options = {
-    enable = lib.mkEnableOption name;
-
     package = lib.mkPackageOption pkgs "redis" { };
 
-    dataDir = lib.mkOption {
-      type = types.str;
-      default = "./data/${name}";
-      description = "The redis data directory";
-    };
-
     bind = lib.mkOption {
       type = types.nullOr types.str;
       default = "127.0.0.1";
diff --git a/nix/searxng.nix b/nix/searxng.nix
index efad80fd..600dfb14 100644
--- a/nix/searxng.nix
+++ b/nix/searxng.nix
@@ -5,7 +5,6 @@ let
 in
 {
   options = {
-    enable = lib.mkEnableOption name;
     package = lib.mkPackageOption pkgs "searxng" { };
 
     host = lib.mkOption {
diff --git a/nix/tempo.nix b/nix/tempo.nix
index 4a7def01..e9cdc2c0 100644
--- a/nix/tempo.nix
+++ b/nix/tempo.nix
@@ -8,8 +8,6 @@ in
     description = ''
       Configure tempo.
     '';
-    enable = lib.mkEnableOption name;
-
     package = lib.mkPackageOption pkgs "tempo" { };
 
     httpAddress = lib.mkOption {
@@ -24,12 +22,6 @@ in
       default = 3200;
     };
 
-    dataDir = lib.mkOption {
-      type = types.str;
-      default = "./data/${name}";
-      description = "The tempo data directory";
-    };
-
     extraConfig = lib.mkOption {
       type = yamlFormat.type;
       default = { };
diff --git a/nix/weaviate.nix b/nix/weaviate.nix
index d6c263ad..d2ec7e4f 100644
--- a/nix/weaviate.nix
+++ b/nix/weaviate.nix
@@ -8,16 +8,8 @@ let
 in
 {
   options = {
-    enable = lib.mkEnableOption name;
-
     package = lib.mkPackageOption pkgs "weaviate" { };
 
-    dataDir = lib.mkOption {
-      type = types.str;
-      default = "./data/${name}";
-      description = "Path to the Weaviate data store";
-    };
-
     host = lib.mkOption {
       type = types.str;
       default = "127.0.0.1";
diff --git a/nix/zookeeper.nix b/nix/zookeeper.nix
index 846f7380..cb541399 100644
--- a/nix/zookeeper.nix
+++ b/nix/zookeeper.nix
@@ -4,22 +4,12 @@
 with lib;
 {
   options = {
-    enable = mkEnableOption (lib.mdDoc "Zookeeper");
-
     port = mkOption {
       description = lib.mdDoc "Zookeeper Client port.";
       default = 2181;
       type = types.port;
     };
 
-    dataDir = mkOption {
-      type = types.str;
-      default = "./data/${name}";
-      description = lib.mdDoc ''
-        Data directory for Zookeeper
-      '';
-    };
-
     id = mkOption {
       description = lib.mdDoc "Zookeeper ID.";
       default = 0;