{
  description = "A very basic flake";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
    flake-parts.url = "github:hercules-ci/flake-parts";
    c3d2-user-module.url = "git+https://gitea.c3d2.de/C3D2/nix-user-module.git";
    home-manager = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    niri.url = "github:sodiboo/niri-flake";
    nixos-hardware.url = "github:NixOS/nixos-hardware/master";
    treefmt-nix = {
      url = "github:numtide/treefmt-nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    determinate.url = "https://flakehub.com/f/DeterminateSystems/determinate/*";
    comin = {
      url = "github:nlewo/comin";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    stylix = {
      url = "github:nix-community/stylix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    musnix.url = "github:musnix/musnix";
    nix-mineral = {
      url = "github:cynicsketch/nix-mineral";
      flake = false;
    };
    mobile-nixos = {
      url = "github:vlinkz/mobile-nixos/sdm845-6.14";
      flake = false;
    };
    gnome-mobile.url = "github:chuangzhu/nixpkgs-gnome-mobile";
    nix-flatpak.url = "github:gmodena/nix-flatpak";
    nixos-boot.url = "github:Melkor333/nixos-boot";
  };

  outputs =
    inputs@{ flake-parts, ... }:
    flake-parts.lib.mkFlake { inherit inputs; } {
      # Define supported systems
      systems = [
        "x86_64-linux"
        "aarch64-linux"
      ];

      imports = [
        inputs.treefmt-nix.flakeModule
      ];

      # Per-system configuration
      perSystem =
        {
          config,
          pkgs,
          lib,
          ...
        }:
        {
          # Configure treefmt
          treefmt = {
            projectRootFile = "flake.nix";
            programs = {
              nixpkgs-fmt.enable = true;
              prettier = {
                enable = true;
                includes = [
                  "*.json"
                  "*.yaml"
                  "*.yml"
                ];
              };
              taplo.enable = true;
            };

            settings = {
              global.excludes = [
                "*.lock"
                "result"
                ".git/"
                "*.md"
                "*.sh"
                "*.py"
                "*.js"
                "*.ts"
              ];
            };
          };

          # Packages
          packages =
            let
              cutieMobileImages =
                inputs.self.nixosConfigurations.cutie.config.mobile.outputs.android.android-fastboot-images;
            in
            {
              default = cutieMobileImages;
              cutie-mobile-images =
                inputs.self.nixosConfigurations.cutie.config.mobile.outputs.android.android-fastboot-images;
              hello-kitty-cursors = pkgs.stdenv.mkDerivation {
                pname = "hello-kitty-cursors";
                version = "1.0.0";

                src = pkgs.fetchzip {
                  url = "https://www.rw-designer.com/cursor-downloadset/hello-kitty.zip";
                  sha256 = "sha256-p4US/gftDL0ne4l0dHUIKKZy2oibkOqdJ3fMisySnNM=";
                  stripRoot = false;
                };

                installPhase = ''
                  mkdir -p $out/share/icons/HelloKitty
                  for file in ${inputs.self}/cursors/*; do
                    if [ -e "$file" ]; then
                      cp "$file" "$out/share/icons/HelloKitty/"
                    else
                      echo "Warning: File $file does not exist."
                    fi
                  done

                  # Adjust the path to index.theme if necessary
                  if [ -e "${inputs.self}/index.theme" ]; then
                    cp "${inputs.self}/index.theme" "$out/share/icons/HelloKitty/"
                  else
                    echo "Warning: index.theme does not exist."
                  fi
                '';

                meta = with lib; {
                  description = "Hello Kitty Cursor theme";
                  homepage = "https://www.rw-designer.com/cursor-downloadset/hello-kitty.zip";
                  license = licenses.gpl2Only;
                };
              };

              wallpapers = pkgs.stdenv.mkDerivation {
                name = "wallpapers";
                src = ./assets;

                buildInputs = with pkgs; [ ffmpeg ];

                buildPhase = ''
                  # Create output directory
                  mkdir -p $out/share/wallpapers

                  # Copy static wallpaper
                  cp "wp6553608.jpg" "$out/share/wallpapers/static-wallpaper.jpg"

                  # Copy original animated wallpaper
                  cp "Anime Live Wallpaper - Anime Cat Girl Snow - HD - no copyright [SiMc3l0ido0].mp4" \
                     "$out/share/wallpapers/anime-cat-girl-snow.mp4"

                  # Create optimized version
                  ${pkgs.ffmpeg}/bin/ffmpeg -i "Anime Live Wallpaper - Anime Cat Girl Snow - HD - no copyright [SiMc3l0ido0].mp4" \
                    -vf "scale=1920:1080:force_original_aspect_ratio=increase,crop=1920:1080" \
                    -r 30 -c:v libx264 -crf 28 -preset medium \
                    -t 30 -an "$out/share/wallpapers/anime-cat-girl-snow-optimized.mp4"
                '';

                installPhase = ''
                  # Files are already in the right place from buildPhase
                  echo "Wallpapers installed to $out/share/wallpapers"
                '';

                meta = with lib; {
                  description = "Personal wallpaper collection";
                  platforms = platforms.linux;
                };
              };
            };

          # Development shell
          devShells.default = pkgs.mkShell {
            buildInputs = with pkgs; [
              git
            ];

            shellHook = ''
              echo "Development shell loaded!"
              echo "Run 'nix fmt' to format all files"
            '';
          };

          # Formatting check
          checks.formatting = config.treefmt.build.check inputs.self;
        };

      # Flake-level configuration (not per-system)
      flake = {
        # NixOS configurations
        nixosConfigurations = {
          cutie = inputs.nixpkgs.lib.nixosSystem {
            system = "aarch64-linux";
            modules = [
              ./packages/fix-pkg-config.nix
              ./hosts/cutie/configuration.nix
              inputs.gnome-mobile.nixosModules.gnome-mobile
              inputs.nix-flatpak.nixosModules.nix-flatpak
              (import "${inputs.mobile-nixos}/lib/configuration.nix" {
                device = "oneplus-fajita";
              })
              ./packages/fix-pkg-config.nix
            ];
          };

          p50 = inputs.nixpkgs.lib.nixosSystem {
            specialArgs = { inherit inputs; };
            system = "x86_64-linux";
            modules = [
              "${inputs.nix-mineral}/nix-mineral.nix"
              inputs.niri.nixosModules.niri
              inputs.nixos-hardware.nixosModules.lenovo-thinkpad-p50
              ./hosts/p50/configuration.nix
              inputs.determinate.nixosModules.default
              inputs.musnix.nixosModules.musnix

              inputs.nixos-boot.nixosModules.default

              inputs.home-manager.nixosModules.home-manager
              {
                home-manager.useGlobalPkgs = true;
                home-manager.useUserPackages = true;
                home-manager.backupFileExtension = "backup";
                home-manager.extraSpecialArgs = { inherit inputs; };
                home-manager.users.lucy =
                  { pkgs, inputs, ... }:
                  {
                    imports = [
                      ./modules/home.nix
                      ./modules/bottom.nix
                      ./modules/htop.nix
                    ];

                    home.packages = [
                      inputs.self.packages.${pkgs.system}.wallpapers
                    ];

                    home.file = {
                      ".local/share/wallpapers/anime-cat-girl-snow.mp4".source = "${
                        inputs.self.packages.${pkgs.system}.wallpapers
                      }/share/wallpapers/anime-cat-girl-snow.mp4";
                      ".local/share/wallpapers/static-wallpaper.jpg".source = "${
                        inputs.self.packages.${pkgs.system}.wallpapers
                      }/share/wallpapers/static-wallpaper.jpg";
                      ".local/share/wallpapers/anime-cat-girl-snow-optimized.mp4".source = "${
                        inputs.self.packages.${pkgs.system}.wallpapers
                      }/share/wallpapers/anime-cat-girl-snow-optimized.mp4";
                    };
                  };
              }
              inputs.c3d2-user-module.nixosModule
              ./modules/nix.nix
              ./modules/fonts.nix
              inputs.comin.nixosModules.comin
              ./modules/comin.nix
              inputs.stylix.nixosModules.stylix
              ./modules/stylix.nix
              ./modules/firefox-nixos.nix
              ./modules/boot.nix
              ./modules/binfmt.nix
            ];
          };
        };

        inherit (inputs.self.nixosConfigurations)
          fajita-fastboot-images
          fajita-minimal-image
          uefi-x86_64-image
          ;
      };
    };
}