{
  description = "Benzin - Wii BRlyt/BRlan/TPL file tools";

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

  outputs =
    { self, nixpkgs }:
    let
      systems = [
        "x86_64-linux"
        "aarch64-linux"
      ];
      forAllSystems = nixpkgs.lib.genAttrs systems;

      mkPkg =
        {
          pkgs,
          pname,
          version,
          srcDir,
          buildInputs,
          makefile,
          description,
          extraPatchPhase ? "",
        }:
        pkgs.stdenv.mkDerivation {
          inherit
            pname
            version
            buildInputs
            description
            ;

          src = if srcDir == "." then self else "${self}/${srcDir}";

          patchPhase = ''
            substituteInPlace ${makefile} --replace-fail 'gcc' '$(CC)'
            ${extraPatchPhase}
          '';

          installPhase = ''
            mkdir -p $out/bin
            cp ${pname} $out/bin/
          '';

          meta = {
            inherit description;
            homepage = "https://github.com/trap15/benzin";
            platforms = pkgs.lib.platforms.linux;
            maintainers = [ ];
          };
        };
    in
    {
      packages = forAllSystems (
        system:
        let
          pkgs = import nixpkgs { inherit system; };
        in
        {
          benzin = mkPkg {
            inherit pkgs;
            pname = "benzin";
            version = "2.1.11-beta";
            srcDir = ".";
            buildInputs = [ pkgs.minixml ];
            makefile = "Makefile";
            description = "Tool for parsing and creating BRlyt/BRlan files (Wii UI format)";

            extraPatchPhase = ''
              # xml.c uses mxml 2.x struct internals; rewrite to use accessor functions.
              # Remove the redundant assignment on line 35, then fix the for loop.
              sed -i '/^[[:space:]]*current = node->child;$/{
                /for/d
                d
              }' xml.c

              substituteInPlace xml.c \
                --replace-fail 'for (current = node->child; current && ptr < end; current = current->next)' \
                'for (current = mxmlGetFirstChild(node); current && ptr < end; current = mxmlGetNextSibling(current))' \
                --replace-fail 'current->type == MXML_TEXT' 'mxmlGetType(current) == MXML_TEXT' \
                --replace-fail 'current->type == MXML_OPAQUE' 'mxmlGetType(current) == MXML_OPAQUE' \
                --replace-fail 'current->type == MXML_INTEGER' 'mxmlGetType(current) == MXML_INTEGER' \
                --replace-fail 'current->type == MXML_REAL' 'mxmlGetType(current) == MXML_REAL' \
                --replace-fail 'current->value.opaque' 'mxmlGetOpaque(current)' \
                --replace-fail 'current->value.integer' 'mxmlGetInteger(current)' \
                --replace-fail 'current->value.real' 'mxmlGetReal(current)' \
                --replace-fail 'node->value.element.name' 'mxmlGetElement(node)' \
                --replace-fail 'temp = temp->parent' 'temp = mxmlGetParent(temp)' \
                --replace-fail 'node->prev' 'mxmlGetPrevSibling(node)' \
                --replace-fail 'node->parent' 'mxmlGetParent(node)'

              # Handle text node: insert local vars before the whitespace check
              substituteInPlace xml.c \
                --replace-fail 'if (current->value.text.whitespace)' \
                'int _mxml_ws; const char *_mxml_str = mxmlGetText(current, &_mxml_ws); if (_mxml_ws)'

              substituteInPlace xml.c \
                --replace-fail 'current->value.text.string' '_mxml_str'
            '';
          };

          zetsubou = mkPkg {
            inherit pkgs;
            pname = "zetsubou";
            version = "0.1";
            srcDir = "zetsubou";
            buildInputs = [ pkgs.gd ];
            makefile = "Makefile";
            description = "TPL (Texture Palette List) converter — TPL to/from BMP/PNG";
          };

          gentpl = mkPkg {
            inherit pkgs;
            pname = "gentpl";
            version = "0.1";
            srcDir = "gentpl";
            buildInputs = [ pkgs.gd ];
            makefile = "Makefile";
            description = "Simple PNG to TPL converter";
          };

          default = self.packages.${system}.benzin;
        }
      );

      devShells = forAllSystems (
        system:
        let
          pkgs = import nixpkgs { inherit system; };
        in
        {
          default = pkgs.mkShell {
            buildInputs = with pkgs; [
              minixml
              gd
            ];
          };
        }
      );
    };
}