diff --git a/default.nix b/default.nix
index 79038c8..7d85ea6 100644
--- a/default.nix
+++ b/default.nix
@@ -1,11 +1,12 @@
 let
-    lock = builtins.fromJSON (builtins.readFile ./flake.lock);
+  lock = builtins.fromJSON (builtins.readFile ./flake.lock);
 in
-(import (
-  fetchTarball {
-    url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
-    sha256 = lock.nodes.flake-compat.locked.narHash;
-  }
-) {
-  src = ./.;
-}).defaultNix
+  (import (
+      fetchTarball {
+        url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
+        sha256 = lock.nodes.flake-compat.locked.narHash;
+      }
+    ) {
+      src = ./.;
+    })
+  .defaultNix
diff --git a/flake.nix b/flake.nix
index bce900c..86b27e7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -6,147 +6,126 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
     naersk.url = "github:nix-community/naersk";
-    flake-compat = { url = github:edolstra/flake-compat; flake = false; };
-    flake-utils.url = "github:numtide/flake-utils"; 
+    flake-compat = {
+      url = github:edolstra/flake-compat;
+      flake = false;
+    };
+    flake-utils.url = "github:numtide/flake-utils";
   };
-  
-  outputs = {nixpkgs, flake-utils, naersk, rust-overlay, ...}:
+
+  outputs = {
+    nixpkgs,
+    flake-utils,
+    naersk,
+    rust-overlay,
+    ...
+  }:
     flake-utils.lib.eachDefaultSystem (system: let
       overlays = [
         rust-overlay.overlays.default
       ];
-      pkgs = import nixpkgs { inherit system overlays; };
+      pkgs = import nixpkgs {inherit system overlays;};
       rust-bin = pkgs.rust-bin.stable."1.71.0".default;
       naersk-lib = pkgs.callPackage naersk {
-          rustc = rust-bin;
-          cargo = rust-bin;
+        rustc = rust-bin;
+        cargo = rust-bin;
       };
       heracles = naersk-lib.buildPackage {
-          name = "heracles";
-          verion = "0.0.1";
-          src = ./.;
-          nativeBuildInputs = [ pkgs.pkg-config ];
-          buildInputs = (
-            if pkgs.stdenv.isDarwin then
-              with pkgs.darwin.apple_sdk.frameworks; [ Security SystemConfiguration ]
-            else
-            [ pkgs.openssl ]) ++ [rust-bin];
+        name = "heracles";
+        verion = "0.0.1";
+        src = ./.;
+        nativeBuildInputs = [pkgs.pkg-config];
+        buildInputs =
+          (
+            if pkgs.stdenv.isDarwin
+            then with pkgs.darwin.apple_sdk.frameworks; [Security SystemConfiguration]
+            else [pkgs.openssl]
+          )
+          ++ [rust-bin];
       };
-    in
-    {
+    in {
       packages.default = heracles;
-    }) // {
-        nixosModule = {config, pkgs, lib}: with lib; {
-            options = {
-                services.heracles.enable = mkEnableOption "enable heracles service";
-                services.heracles.listen = mkOption {
-                    description = "[host]:port address for heracles to listen on";
-                    default = "localhost:8080";
-                    defaultText = "localhost:8080";
-                };
+      formatter = pkgs.alejandra;
+    })
+    // {
+      nixosModules.default = {
+        config,
+        pkgs,
+        lib,
+      }: {
+        options = {
+          services.heracles.enable = lib.mkEnableOption "enable heracles service";
+          services.heracles.listen = lib.mkOption {
+            description = "[host]:port address for heracles to listen on";
+            default = "localhost:8080";
+            defaultText = "localhost:8080";
+            type = lib.types.string;
+          };
 
-                services.heracles.settings = mkOption {
-                    description = "heracles dashboard Configuration";
-                    default = [
+          services.heracles.settings = lib.mkOption {
+            description = "heracles dashboard Configuration";
+            type = lib.types.listOf lib.types.attrs;
+            default = [];
+            defaultText = lib.literalExpression ''
+              [
+                {
+                  title = "A dashboard";
+                  graphs = [
+                    {
+                      title = "Graph title";
+                      query_type = "Range";
+                      # yaxis formatting default for this graph
+                      d3_tick_format = "~s";
+                      plots = [
                         {
-                            title = "A dashboard";
-                            graphs = [
-                                {
-                                    title = "Graph title";
-                                    query_type = "Range";
-                                    # yaxis formatting default for this graph
-                                    d3_tick_format = "~s";
-                                    plots = [
-                                        {
-                                            source = "http://heimdall:9001";
-                                            query = ''
-                                                sum by (instance)(irate(node_cpu_seconds_total{job="nodestats"}[5m]))
-                                            '';
-                                            meta = {
-                                                name_function = "`\${labels.instance}`";
-                                                named_axis = "y";
-                                                # yaxis formatting for this subplot
-                                                d3_tick_format = "~s";
-                                            };
-                                        }
-                                    ];
-                                    # span for this graph.
-                                    span = {
-                                        end = "now";
-                                        duration = "1d";
-                                        step_duration = "10min";
-                                    };
-                                }
-                            ];
-                            # default span for dashboard
-                            span = {
-                                end = "now";
-                                duration = "1d";
-                                step_duration = "10min";
-                            };
+                          source = "http://heimdall:9001";
+                          query = \'\'
+                            sum by (instance)(irate(node_cpu_seconds_total{job="nodestats"}[5m]))
+                          \'\';
+                          meta = {
+                            name_function = "''${labels.instance}";
+                            named_axis = "y";
+                            # yaxis formatting for this subplot
+                            d3_tick_format = "~s";
+                          };
                         }
-                    ];
-                    defaultText = ''
-                    [
-                        {
-                            title = "A dashboard";
-                            graphs = [
-                                {
-                                    title = "Graph title";
-                                    query_type = "Range";
-                                    # yaxis formatting default for this graph
-                                    d3_tick_format = "~s";
-                                    plots = [
-                                        {
-                                            source = "http://heimdall:9001";
-                                            query = \'\'
-                                                sum by (instance)(irate(node_cpu_seconds_total{job="nodestats"}[5m]))
-                                            \'\';
-                                            meta = {
-                                                name_label = "instance";
-                                                name_prefix = "trace name prefix";
-                                                name_suffix = "trace name suffix";
-                                                named_axis = "y";
-                                                # yaxis formatting for this subplot
-                                                d3_tick_format = "~s";
-                                            };
-                                        }
-                                    ];
-                                    # span for this graph.
-                                    span = {
-                                        end = "now";
-                                        duration = "1d";
-                                        step_duration = "10min";
-                                    };
-                                }
-                            ];
-                            # default span for dashboard
-                            span = {
-                                end = "now";
-                                duration = "1d";
-                                step_duration = "10min";
-                            };
-                        }
-                    ]
-                    '';
-                };
-            };
-
-            config = mkIf config.services.heracles.enable {
-                environment.etc."heracles.yaml" = {
-                    text = (generators.toYAML {} config.services.heracles.settings);
-                };
-                systemd.services.heracles = {
-                    wantedBy = [ "multi-user.target" "default.target" ];
-                    wants = [ "network.target" ];
-                    after = [ "network-online.target" ];
-                    serviceConfig = {
-                        Restart = "on-failure";
-                        RestartSec = "30s";
-                        ExecStart = "${pkgs.heracles}/bin/heracles --listen ${config.services.heracles.listen} --config=${config.environment.etc."heracles.yaml".target}";
-                    };
-                };
-            };
+                      ];
+                      # span for this graph.
+                      span = {
+                        end = "now";
+                        duration = "1d";
+                        step_duration = "10min";
+                      };
+                    }
+                  ];
+                  # default span for dashboard
+                  span = {
+                    end = "now";
+                    duration = "1d";
+                    step_duration = "10min";
+                  };
+                }
+              ]
+            '';
+          };
         };
+
+        config = let
+          cfg = config.services.heracles;
+          cfgFile = pkgs.writeText "heracles.yaml" (builtins.toJSON cfg.settings);
+        in
+          lib.mkIf cfg.enable {
+            systemd.services.heracles = {
+              wantedBy = ["multi-user.target" "default.target"];
+              wants = ["network.target"];
+              after = ["network-online.target"];
+              serviceConfig = {
+                Restart = "on-failure";
+                RestartSec = "30s";
+                ExecStart = "${pkgs.heracles}/bin/heracles --listen ${cfg.listen} --config=${cfgFile}";
+              };
+            };
+          };
+      };
     };
 }