{
  description = "Wii game decompilation dev environment";

  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};

        decomp-toolkit = pkgs.stdenv.mkDerivation rec {
          pname = "decomp-toolkit";
          version = "1.8.4";
          src = pkgs.fetchurl {
            url = "https://github.com/encounter/decomp-toolkit/releases/download/v${version}/dtk-linux-x86_64";
            sha256 = "086k0cxspfhjmii51k1w8n2mxdnc9k0fc26ks75f1g818jcv31kw";
          };
          dontUnpack = true;
          nativeBuildInputs = [ pkgs.autoPatchelfHook ];
          buildInputs = [ pkgs.stdenv.cc.cc.lib ];
          installPhase = ''
            mkdir -p $out/bin
            cp $src $out/bin/dtk
            chmod +x $out/bin/dtk
          '';
        };

        objdiff = pkgs.stdenv.mkDerivation rec {
          pname = "objdiff";
          version = "3.8.1";
          src = pkgs.fetchurl {
            url = "https://github.com/encounter/objdiff/releases/download/v${version}/objdiff-linux-x86_64";
            sha256 = "1wf0y42w04v0cl3bpwc23wdvyylkqhv3jxbw4iwl8wlkbvrrqlkf";
          };
          dontUnpack = true;
          nativeBuildInputs = [ pkgs.autoPatchelfHook ];
          buildInputs = [
            pkgs.stdenv.cc.cc.lib
            pkgs.fontconfig
            pkgs.libGL
            pkgs.libxcb
            pkgs.libx11
            pkgs.libxkbcommon
            pkgs.wayland
          ];
          installPhase = ''
            mkdir -p $out/bin
            cp $src $out/bin/objdiff
            chmod +x $out/bin/objdiff
          '';
        };

        wibo = pkgs.stdenv.mkDerivation rec {
          pname = "wibo";
          version = "1.0.3";
          src = pkgs.fetchurl {
            url = "https://github.com/decompals/wibo/releases/download/${version}/wibo-x86_64";
            sha256 = "f99iCxUXRClrm7kzGNjEAJ09PpjiNxim7an77Ezvuyo=";
          };
          dontUnpack = true;
          nativeBuildInputs = [ pkgs.autoPatchelfHook ];
          buildInputs = [ pkgs.stdenv.cc.cc.lib ];
          installPhase = ''
            mkdir -p $out/bin
            cp $src $out/bin/wibo
            chmod +x $out/bin/wibo
          '';
        };
      in
      {
        devShells.default = pkgs.mkShell {
          name = "steamboat-willie-decomp";

          packages = [
            # Decomp project tools
            decomp-toolkit
            objdiff
            wibo
          ] ++ (with pkgs; [
            # Reverse engineering
            ghidra
            radare2

            # Wii/GC disc tools
            wiimms-iso-tools

            # Build tools
            ninja
            cmake
            gnumake
            pkg-config

            # Utilities
            git
            python3
            wget
            curl
            jq
            patchelf
            unzip
          ]);

          shellHook = ''
            echo "=== Steamboat Willie Decomp Dev Shell ==="
            echo ""
            echo "Tools available:"
            echo "  dtk        - decomp-toolkit v1.8.4"
            echo "  objdiff    - objdiff v3.8.1"
            echo "  wibo       - Win32 wrapper v1.0.3 (runs CodeWarrior exes)"
            echo "  ghidra     - reverse engineering IDE"
            echo "  radare2    - CLI disassembler"
            echo "  wit        - Wiimms ISO Tools"
            echo ""

            # Point DEVKITPPC at a devkitPro install if one exists.
            if [ -d "/opt/devkitpro/devkitPPC" ]; then
              export DEVKITPRO=/opt/devkitpro
              export DEVKITPPC=/opt/devkitpro/devkitPPC
              echo "DEVKITPPC found: $DEVKITPPC"
            else
              echo "Note: devkitPPC is not installed."
              echo "  - For Metrowerks CodeWarrior games (most GC + many Wii),"
              echo "    devkitPPC is NOT required. dtk + wibo handle everything."
              echo "  - For GCC-compiled games (needing powerpc-eabi-gcc), install"
              echo "    devkitPro first:"
              echo "      wget https://apt.devkitpro.org/install-devkitpro-pacman"
              echo "      sudo ./install-devkitpro-pacman"
              echo "      sudo dkp-pacman -S devkitPPC"
            fi
            echo ""
            echo "Quick start:"
            echo "  wit EXTRACT game.iso -o ./disc/"
            echo "  dtk disc info game.iso"
            echo "  dtk dol config sys/main.dol -o config.yml"
            echo "  python configure.py"
            echo "  ninja"
          '';
        };
      }
    );
}