cleaned up module and added package with overlay

flake.nix

@@ -8,121 +8,79 @@
   outputs =
     { self, nixpkgs, ... }:
     let
-      system = "x86_64-linux";
-      pkgs = nixpkgs.legacyPackages.${system};
+      supportedSystems = [
+        "x86_64-linux"
+      ];
+      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
+      nixpkgsFor = forAllSystems (system: import nixpkgs { inherit system; });
     in
     {
-      packages.${system} = rec {
-        clrsync = pkgs.stdenv.mkDerivation rec {
-          pname = "clrsync";
-          version = "unstable";
+      packages = forAllSystems (
+        system:
+        let
+          pkgs = nixpkgsFor.${system};
+        in
+        rec {
+          clrsync = pkgs.callPackage ./package.nix { };
+          default = clrsync;
+        }
+      );
 
-          src = self;
-
-          nativeBuildInputs = [
-            pkgs.cmake
-            pkgs.git
-            pkgs.pkg-config
-            pkgs.makeWrapper
-            pkgs.wayland-protocols
-          ];
-
-          buildInputs = [
-            pkgs.glfw
-            pkgs.freetype
-            pkgs.fontconfig
-            pkgs.xorg.libXcursor
-            pkgs.mesa
-            pkgs.xorg.libX11
-            pkgs.xorg.libXrandr
-            pkgs.xorg.libXi
-            pkgs.xorg.libXinerama
-            pkgs.xorg.libXcursor
-            pkgs.wayland
-            pkgs.wayland-protocols
-            pkgs.libxkbcommon
-            pkgs.zlib
-            pkgs.bzip2
-          ];
-
-          cmakeFlags = [
-            "-DCMAKE_BUILD_TYPE=Release"
-            "-DUSE_SYSTEM_GLFW=ON"
-          ];
-
-          installPhase = ''
-            cmake --install . --prefix $out
-            wrapProgram $out/bin/clrsync_gui \
-              --prefix LD_LIBRARY_PATH : ${pkgs.lib.makeLibraryPath buildInputs}
-            wrapProgram $out/bin/clrsync_cli \
-              --prefix LD_LIBRARY_PATH : ${pkgs.lib.makeLibraryPath buildInputs}
-          '';
-
-          meta = with pkgs.lib; {
-            description = "Color scheme manager (git version)";
-            homepage = "https://github.com/obsqrbtz/clrsync";
-            license = licenses.mit;
-            platforms = platforms.linux;
-            mainProgram = "clrsync_gui";
-          };
-        };
-
-        default = clrsync;
+      homeModules = {
+        default = import ./home-manager-module.nix self;
+        clrsync = self.homeModules.default;
       };
 
-      homeManagerModules.default = import ./home-manager-module.nix;
-      homeManagerModules.clrsync = self.homeManagerModules.default;
-
-      apps.${system} = {
+      apps = forAllSystems (system: {
         clrsync-gui = {
           type = "app";
           program = "${self.packages.${system}.clrsync}/bin/clrsync_gui";
+          meta = {
+            description = "clrsync gui app";
+            license = self.packages.x86_64-linux.licenses.mit;
+            maintainers = [ "Daniel Dada" ];
+          };
         };
 
         clrsync-cli = {
           type = "app";
           program = "${self.packages.${system}.clrsync}/bin/clrsync_cli";
+          meta = {
+            description = "clrsync cli app";
+            license = self.packages.x86_64-linux.licenses.mit;
+            maintainers = [ "Daniel Dada" ];
+          };
         };
 
-        default = self.apps.${system}.clrsync-gui;
+        default = self.apps.${system}.clrsync-cli;
+      });
+
+      devShells = forAllSystems (
+        system:
+        let
+          pkgs = nixpkgsFor.${system};
+        in
+        {
+          default = pkgs.mkShell {
+            inputsFrom = [ self.packages.${system}.clrsync ];
+
+            buildInputs = with pkgs; [
+              cmake
+              ninja
+              clang-tools
+              gdb
+            ];
+
+            shellHook = ''
+              export CMAKE_GENERATOR="Ninja"
+              export CMAKE_EXPORT_COMPILE_COMMANDS=1
+            '';
+          };
+        }
+      );
+
+      overlays.default = final: prev: {
+        clrsync = self.packages.${final.system}.clrsync;
       };
-
-      devShells.${system}.default = pkgs.mkShell {
-        buildInputs = with pkgs; [
-          cmake
-          git
-          pkg-config
-          makeWrapper
-          ninja
-          stdenv.cc.cc.lib
-          clang-tools
-          gdb
-
-          glfw
-          freetype
-          fontconfig
-          mesa
-          xorg.libX11
-          xorg.libXrandr
-          xorg.libXi
-          xorg.libXinerama
-          xorg.libXcursor
-          libxkbcommon
-          zlib
-          bzip2
-          wayland
-          wayland-scanner
-          wayland-protocols
-        ];
-
-        shellHook = ''
-          export CMAKE_GENERATOR="Ninja"
-          export CMAKE_EXPORT_COMPILE_COMMANDS=1
-          export CPLUS_INCLUDE_PATH="${pkgs.gcc.cc}/include/c++/${pkgs.gcc.cc.version}:${pkgs.gcc.cc}/include/c++/${pkgs.gcc.cc.version}/x86_64-unknown-linux-gnu:$CPLUS_INCLUDE_PATH"
-          export C_INCLUDE_PATH="${pkgs.gcc.cc}/include:$C_INCLUDE_PATH"
-          export PATH=${pkgs.wayland-protocols}/bin:$PATH
-        '';
-      };
-
     };
 }