vulkan-tutorial/flake.nix

{
  description = "A game stub written in Haskell";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = nixpkgs.legacyPackages.${system};

        nixos-lib = import (nixpkgs + "/nixos/lib") {};

        haskellPackages = pkgs.haskellPackages.override {
          overrides = final: prev: {
            wavefront = jailbreakUnbreak prev.wavefront;
          };
        };

        jailbreakUnbreak = pkg:
          pkgs.haskell.lib.doJailbreak (pkg.overrideAttrs (_: { meta = { }; }));

        packageName = "vulkan-tutorial";
      in rec {
        packages = rec {
          vulkan-tutorial = # (ref:haskell-package-def)
            haskellPackages.callCabal2nix packageName self rec {
              # Dependency overrides go here
              wavefront = haskellPackages.wavefront;
          };
          default = vulkan-tutorial;
        };

        devShells.${system} = haskellPackages.shellFor {
          packages = p: [ packages.vulkan-tutorial ];
          withHoogle = true;
          buildInputs = (with haskellPackages; [
            haskell-language-server
            ghcid
            cabal-install
            (jailbreakUnbreak wavefront)
          ]) ++ (with pkgs; [
            shaderc
            vulkan-loader
            vulkan-validation-layers
            renderdoc
          ]);
          VK_LAYER_PATH="${pkgs.vulkan-validation-layers}/share/vulkan/explicit_layer.d";
          SDL_VULKAN_LIBRARY="${pkgs.vulkan-loader}/lib/libvulkan.so";
        };
        #devShells.${system} = pkgs.mkShell {
        #  buildInputs = with haskellPackages; [
        #    haskell-language-server
        #    ghcid
        #    cabal-install
        #  ];
        #  nativeBuildInputs = with pkgs; [
        #    pkg-config
        #    SDL2
        #    vulkan-validation-layers
        #    vulkan-headers
        #    vulkan-loader
        #  ];
        #  inputsFrom = builtins.attrValues self.packages.${system};
        #  VK_LAYER_PATH="${pkgs.vulkan-validation-layers}/share/vulkan/explicit_layer.d";
        #  SDL_VULKAN_LIBRARY="${pkgs.vulkan-loader}/lib/libvulkan.so";
        #};
    });
}