OpenHSP flake (minimal, build-only)

flake.lock

{
  "nodes": {
    "nixpkgs": {
      "locked": {
        "lastModified": 1773628058,
        "narHash": "sha256-hpXH0z3K9xv0fHaje136KY872VT2T5uwxtezlAskQgY=",
        "owner": "nixos",
        "repo": "nixpkgs",
        "rev": "f8573b9c935cfaa162dd62cc9e75ae2db86f85df",
        "type": "github"
      },
      "original": {
        "owner": "nixos",
        "ref": "nixpkgs-unstable",
        "repo": "nixpkgs",
        "type": "github"
      }
    },
    "root": {
      "inputs": {
        "nixpkgs": "nixpkgs"
      }
    }
  },
  "root": "root",
  "version": 7
}

flake.nix

{
  description = "OpenHSP - Hot Soup Processor (HSP3)";

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

  outputs =
    { self, nixpkgs }:
    let
      supportedSystems = [ "x86_64-linux" "aarch64-linux" ];
      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
    in
    {
      packages = forAllSystems (system:
        let
          pkgs = nixpkgs.legacyPackages.${system};
          stdenv = pkgs.stdenv;

          openhsp = stdenv.mkDerivation {
            pname = "openhsp";
            version = "3.6";

            src = pkgs.lib.cleanSourceWith {
              filter = path: type:
                let
                  basename = builtins.baseNameOf path;
                in
                basename != ".direnv"
                && basename != ".git"
                && pkgs.lib.cleanSourceFilter path type;
              src = ./.;
            };

            nativeBuildInputs = with pkgs; [
              pkg-config
            ];

            buildInputs = with pkgs; [
              SDL2
              SDL2_image
              SDL2_mixer
              SDL2_ttf
              gtk2
              glew
              libGL
              mesa
              curl
              libgpiod_1
              libffi
            ];

            # SDL2_ttf.h uses #include "SDL.h" (quotes, not <SDL2/SDL.h>),
            # so we must add the SDL2 include directory directly.
            NIX_CFLAGS_COMPILE = [
              "-I${pkgs.SDL2.dev}/include/SDL2"
            ];

            buildPhase = ''
              runHook preBuild
              make clean || true
              make -j$(nproc)
              runHook postBuild
            '';

            installPhase = ''
              runHook preInstall
              mkdir -p $out/bin
              for bin in hsp3dish hsp3gp hsp3cl hspcmp hsed; do
                [ -f "$bin" ] && cp "$bin" $out/bin/
              done

              # Install data directories
              mkdir -p $out/share/openhsp
              for dir in common doclib doclib_en sample hsphelp hsphelp_en hspsdk hsptv; do
                [ -d "$dir" ] && cp -r "$dir" $out/share/openhsp/
              done

              # Copy additional assets
              for f in index.htm index_en.htm main.css single.css hsed.desktop hsed.png ipaexg.ttf; do
                [ -f "$f" ] && cp "$f" $out/share/openhsp/
              done
              runHook postInstall
            '';

            meta = {
              description = "Hot Soup Processor (HSP3) - a scripting language system";
              longDescription = ''
                OpenHSP/Hot Soup Processor (HSP3) is a scripting language system that
                anyone can easily use. You can easily build applications such as game
                programs, screen savers, tools and practical software using images just
                by writing a text script.
              '';
              homepage = "https://github.com/onitama/OpenHSP";
              license = pkgs.lib.licenses.bsd3;
              platforms = pkgs.lib.platforms.linux;
              mainProgram = "hsp3cl";
              maintainers = with pkgs.lib.maintainers; [ ];
            };
          };
        in
        {
          default = openhsp;
          inherit openhsp;
        });
    };
}