cleanup

.envrc

@@ -0,0 +1 @@
+use flake

README.md

@@ -44,7 +44,7 @@ directory. You can specify a different configuration file using the `--config`
 flag:
 
 ```console
-gomon -c /path/to/config.json
+batmon -c /path/to/config.json
 ```
 
 The configuration file should contain a list of batteries to monitor, along

flake.lock

@@ -0,0 +1,26 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1705003311,
+        "narHash": "sha256-7JtTAgeUHGKA9phwPveHtwvaQCDrta1yR5t7MYSMcCU=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "3680fef792863c8b7bf52f0d474a16319995eabd",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -10,13 +10,19 @@
     forEachSystem = nixpkgs.lib.genAttrs systems;
     pkgsForEach = nixpkgs.legacyPackages;
   in {
+    nixosModules = {
+      batmon = ./nix/module.nix {inherit self;};
+    };
+
     packages = forEachSystem (system: {
       batmon = pkgsForEach.${system}.callPackage ./nix/package.nix {};
-      default = self.${system}.batmon;
+      default = self.packages.${system}.batmon;
     });
 
     devShells = forEachSystem (system: {
-      default = pkgsForEach.${system}.callPackage ./nix/shell.nix {};
+      default = pkgsForEach.${system}.callPackage ./nix/shell.nix {
+        packagePath = ./nix/package.nix;
+      };
     });
   };
 }

nix/module.nix

@@ -0,0 +1,56 @@
+{
+  self,
+  config,
+  pkgs,
+  lib,
+  ...
+}: let
+  inherit (lib) mkIf mkForce types;
+  inherit (lib.options) mkOption mkEnableOption;
+
+  cfg = config.services.batmon;
+in {
+  options.services.batmon = {
+    enable = mkEnableOption "batmon for real-time battery monitoring";
+
+    package = mkOption {
+      description = "The batmon package to use";
+      type = types.package;
+      default = self.packages.${pkgs.stdenv.hostPlatform.system}.batmon;
+    };
+
+    settings = mkOption {
+      description = "Settings for Batmon";
+      type = types.attrs;
+      default = {};
+      example = lib.literalExpression ''
+        {
+          batPaths = [
+            {
+              path = "/sys/class/power_supply/BAT0";
+              extraCommand = "notify-send 'State changed!'";
+            }
+          ];
+        }
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.user.services."batmon" = {
+      description = "Power Monitoring Service";
+      environment.PATH = mkForce "/run/wrappers/bin:${lib.makeBinPath cfg.package}";
+      script = ''
+        ${lib.getExe cfg.package} --config ${builtins.toJSON cfg.settings}
+      '';
+
+      serviceConfig = {
+        Type = "simple";
+        Restart = "on-failure";
+      };
+
+      wants = ["power-profiles-daemon.service"];
+      wantedBy = ["default.target"];
+    };
+  };
+}

nix/package.nix

@@ -1,9 +1,9 @@
 {buildGoModule}:
 buildGoModule {
-  pname = "sample-go";
-  version = "0.0.1";
+  pname = "Batmon";
+  version = "0.1.0";
 
-  src = ./.;
+  src = ../.;
 
   vendorHash = null;
 

nix/shell.nix

@@ -1,9 +1,10 @@
 {
+  packagePath,
   callPackage,
   gopls,
   go,
 }: let
-  mainPkg = callPackage ./default.nix {};
+  mainPkg = callPackage packagePath {};
 in
   mainPkg.overrideAttrs (oa: {
     nativeBuildInputs =