flake.nix


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{
  description = "Hyprland Live Wallpaper";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs =
    {
      self,
      nixpkgs,
      flake-utils,
    }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
        libPath = pkgs.lib.makeLibraryPath (
          with pkgs;
          [
            wayland
            libxkbcommon
            vulkan-loader
            libGL
          ]
        );
      in
      {
        packages.default = pkgs.rustPlatform.buildRustPackage {
          pname = "hyprland-live-wallpaper";
          version = "0.1.0";
          src = ./.;
          cargoLock.lockFile = ./Cargo.lock;
          nativeBuildInputs = with pkgs; [
            pkg-config
            makeWrapper
          ];
          buildInputs = with pkgs; [
            wayland
            libxkbcommon
            vulkan-loader
            wayland-protocols
            libGL
          ];
          postInstall = ''
            wrapProgram $out/bin/hyprland-live-wallpaper
            --prefix LD_LIBRARY_PATH : "${libPath}"
          '';
        };

        devShells.default = pkgs.mkShell {
          buildInputs = with pkgs; [
            rustc
            clippy
            rustfmt
            cargo
            pkg-config
            wayland
            libxkbcommon
            vulkan-loader
            wayland-protocols
            libGL
          ];
          LD_LIBRARY_PATH = libPath;
        };
      }
    )
    // {
      nixosModules.default =
        {
          config,
          lib,
          pkgs,
          ...
        }:
        with lib;
        let
          cfg = config.services.hyprland-live-wallpaper;
        in
        {
          options.services.hyprland-live-wallpaper = {
            enable = mkEnableOption "Hyprland Live Wallpaper service";
            shader = mkOption {
              type = types.str;
              default = "default.wgsl";
              description = "Shader file to use";
            };
          };

          config = mkIf cfg.enable {
            systemd.user.services.hyprland-live-wallpaper = {
              description = "Hyprland Live Wallpaper";
              wantedBy = [ "graphical-session.target" ];
              after = [ "graphical-session.target" ];
              serviceConfig = {
                Type = "simple";
                ExecStart = "${
                  self.packages.${pkgs.system}.default
                }/bin/hyprland-live-wallpaper --shader ${cfg.shader}";
                Restart = "on-failure";
                Environment = [ "RUST_LOG=wgpu=info" ];
              };
            };
          };
        };
    };
}