{
  description = "A simple NixOS flake for a single system architecture.";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";

    hyprland = {
      url = "github:hyprwm/Hyprland";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    quickshell = {
      url = "git+https://git.outfoxxed.me/outfoxxed/quickshell";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    matugen = {
      url = "github:/InioX/Matugen";
      inputs.nixpkgs.follows = "nixpkgs";
      # ref = "refs/tags/matugen-v0.10.0";
    };
    oneUI = {
      url = "github:/end-4/OneUI4-Icons";
      inputs.nixpkgs.follows = "nixpkgs";
      flake = false;
    };
  };

  outputs = {
    self,
    nixpkgs,
    hyprland,
    quickshell,
    matugen,
    oneUI,
    ...
  }: let
    supportedSystems = ["x86_64-linux" "aarch64-darwin"];
    eachSupportedSystem = f:
      nixpkgs.lib.genAttrs supportedSystems (system: let
        pkgs = import nixpkgs {
          inherit system;
        };
      in
        f pkgs);
  in {
    nixosModules = rec {
      default = illogical-impulse;
      illogical-impulse = ./nix/modules;
    };

    legacyPackages = eachSupportedSystem (pkgs: {
      iiShellConfig = pkgs.stdenv.mkDerivation {
        pname = "ii-shell-config";
        version = "1.0";
        src = ./.;
        installPhase = ''
          runHook preInstall

          install -d -m 755 $out/.config
          cp -r .config/quickshell $out/.config/

          runHook postInstall
        '';
        dontPatchShebangs = true;
      };
      iiOneUI4Icons = pkgs.stdenv.mkDerivation rec {
        pname = "ii-oneui4-icons";
        version = "r70.55eada4";
        src = oneUI;
        installPhase = ''
          runHook preInstall

          install -d -m 755 $out/share/icons
          cp -dr --no-preserve=mode OneUI $out/share/icons/OneUI
          cp -dr --no-preserve=mode OneUI-dark $out/share/icons/OneUI-dark
          cp -dr --no-preserve=mode OneUI-light $out/share/icons/OneUI-light

          runHook postInstall
        '';
        dontStrip = true;
        dontFixup = true;
      };
    });

    # This new output attribute aggregates all packages under a 'default' attribute.
    packages = eachSupportedSystem (pkgs: {
      default = pkgs.symlinkJoin {
        name = "illogical-impulse-packages";
        paths = builtins.attrValues self.legacyPackages.${pkgs.system};
      };
    });

    devShells = eachSupportedSystem (pkgs: {
      default = pkgs.mkShell {
        packages = with pkgs;
          [
            self.legacyPackages.${pkgs.system}.iiShellConfig
          ]
          # --- Illogical Impulse Audio Dependencies ---
          ++ [
            cava
            pavucontrol
            wireplumber
            libdbusmenu-gtk3
            playerctl
          ]
          # --- Illogical Impulse Backlight Dependencies ---
          ++ [
            geoclue2 # FIXME
            brightnessctl
            ddcutil
          ]
          # --- Illogical Impulse Basic Dependencies ---
          ++ [
            axel
            bc
            coreutils
            cliphist
            cmake
            curl
            rsync
            wget
            ripgrep
            jq
            meson
            xdg-user-dirs
          ]
          # --- Illogical Impulse Bibata Dependencies ---
          ++ [
            bibata-cursors
          ]
          # --- Illogical Impulse Fonts and Theming Dependencies ---
          ++ [
            # adw-gtk-theme-git
            # breeze
            # breeze-plus
            # darkly-bin
            adw-gtk3 #FIXME
            darkly
            eza
            foot
            fish
            fontconfig
            # kde-material-you-colors
            kitty
            matugen.packages.${pkgs.system}.default
            # otf-space-grotesk
            starship
            # ttf-gabarito-git
            nerd-fonts.jetbrains-mono
            # ttf-material-symbols-variable-git
            # ttf-readex-pro
            # ttf-rubik-vf
            # ttf-twemoji
          ]
          # --- Illogical Impulse Hyprland  Dependencies ---
          ++ [
            hyprland.packages.${pkgs.system}.default
            hypridle
            hyprcursor
            hyprlang
            hyprlock
            hyprpicker
            hyprsunset
            hyprutils
            hyprwayland-scanner
            wl-clipboard
          ]
          # --- Illogical Impulse KDE Dependencies ---
          ++ [
            kdePackages.bluedevil
            gnome-keyring
            networkmanager
            kdePackages.plasma-nm
            kdePackages.polkit-kde-agent-1
            kdePackages.dolphin
            kdePackages.systemsettings
          ]
          # TODO
          # Microtex
          ++ [
          ]
          # --- Illogical Impulse OneUI Dependencies ---
          ++ [
            self.legacyPackages.${pkgs.system}.iiOneUI4Icons
          ]
          # --- Illogical Impulse XDG Portal Dependencies ---
          ++ [
            xdg-desktop-portal
            xdg-desktop-portal-kde
            xdg-desktop-portal-gtk
            xdg-desktop-portal-hyprland
          ]
          # --- Illogical Impulse Python Dependencies ---
          ++ [
            clang
            uv
            gtk4
            libadwaita
            libsoup_3
            libportal-gtk4
            gobject-introspection
            sassc
            python3Packages.opencv-python
          ]
          # --- Illogical Impulse Screencapture Dependencies ---
          ++ [
            hyprshot
            slurp
            swappy
            tesseract
            # tesseract-data-eng
            wf-recorder
          ]
          # --- Illogical Impulse GTK/Qt Dependencies ---
          ++ [
            kdialog
            # qt6-5compat
            # qt6-avif-image-plugin
            # qt6-base
            # qt6-declarative
            # qt6-imageformats
            # qt6-multimedia
            # qt6-positioning
            # qt6-quicktimeline
            # qt6-sensors
            # qt6-svg
            # qt6-tools
            # qt6-translations
            # qt6-virtualkeyboard
            # qt6-wayland
            upower
            wtype
            ydotool
          ]
          # --- Illogical Impulse Widget Dependencies ---
          ++ [
            quickshell.packages.${pkgs.system}.default
            fuzzel
            # glib2
            translate-shell
            wlogout
          ];
      };
    });
  };
}