flake.nix

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

  outputs = { self, nixpkgs }:
    let
      allSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
      forAllSystems = nixpkgs.lib.genAttrs allSystems;
    in
    {
      devShells = forAllSystems (system:
        let
          pkgs = nixpkgs.legacyPackages.${system};
        in
        {
          default = pkgs.mkShell {
            name = "dev-env";
            buildInputs = with pkgs; [
              ghc
              haskellPackages.gloss
              mesa
              mesa_glu
              freeglut
              haskellPackages.GLUT
              zlib
            ];
            LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath [ pkgs.freeglut ];
          };
        });
    };
}