add nixos and home-manager modules

flake.nix

@@ -7,11 +7,13 @@
       inputs.systems.follows = "systems";
     };
   };
-  outputs = {
+  outputs = inputs @ {
+    self,
     nixpkgs,
     flake-utils,
     ...
   }: let
+    inherit (self) outputs;
     drv = {
       stdenv,
       lib,
@@ -26,14 +28,35 @@
         version = "0.0.1";
         src = lib.cleanSource ./.;
         nativeBuildInputs = [pkg-config];
-        buildInputs = [libX11 libXScrnSaver dbus.dev];
+        buildInputs = [libX11.dev libXScrnSaver dbus.dev];
         installPhase = ''
           mkdir -p $out/bin
           cp sleeptimer $out/bin
         '';
       };
   in
-    flake-utils.lib.eachDefaultSystem (system: let
+    {
+      overlays.default = final: prev: {
+        sleeptimer = final.callPackage drv {inherit (final.llvmPackages_latest) stdenv;};
+      };
+      nixosModules = {
+        default = {pkgs, ...}: {
+          nixpkgs.overlays = [
+            outputs.overlays.default
+          ];
+          environment.systemPackges = [pkgs.sleeptimer];
+        };
+      };
+      homeManagerModules = {
+        default = {pkgs, ...}: {
+          nixpkgs.overlays = [
+            outputs.overlays.default
+          ];
+          home.packages = [pkgs.sleeptimer];
+        };
+      };
+    }
+    // flake-utils.lib.eachDefaultSystem (system: let
       pkgs = import nixpkgs {
         inherit system;
       };
@@ -44,9 +67,7 @@
         inputsFrom = [package];
         packages = with pkgs; [
           bear
-          clang-tools
-          zlib
-          lzma
+          xz
           icu74
         ];
       };