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 (old: {
          overrides = final: prev: {
            wavefront = jailbreakUnbreak prev.wavefront;
            vulkan-tutorial = vulkan-tutorial;
          };
        });

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

        jailbreakUnbreak = pkg:
          pkgs.haskell.lib.doJailbreak (pkgs.haskell.lib.markUnbroken pkg);

        packageName = "vulkan-tutorial";
      in rec {
        packages = rec {
          vulkan-tutorial = haskellPackages.vulkan-tutorial;
          default = vulkan-tutorial;
        };

        devShells.default = haskellPackages.shellFor {
          packages = p: [ p.vulkan-tutorial ];
          withHoogle = true;
          buildInputs = (with haskellPackages; [
            haskell-language-server
            ghcid
            cabal-install
          ]) ++ (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";
        };
    });
}