Switch to flake-parts based flake

flake.lock

@@ -1,58 +1,78 @@
 {
   "nodes": {
-    "flake-utils": {
+    "flake-parts": {
       "inputs": {
-        "systems": "systems"
+        "nixpkgs-lib": "nixpkgs-lib"
       },
       "locked": {
-        "lastModified": 1710146030,
+        "lastModified": 1712014858,
-        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "narHash": "sha256-sB4SWl2lX95bExY2gMFG5HIzvva5AVMJd4Igm+GpZNw=",
-        "owner": "numtide",
+        "owner": "hercules-ci",
-        "repo": "flake-utils",
+        "repo": "flake-parts",
-        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "rev": "9126214d0a59633752a136528f5f3b9aa8565b7d",
         "type": "github"
       },
       "original": {
-        "owner": "numtide",
+        "owner": "hercules-ci",
-        "repo": "flake-utils",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "haskell-flake": {
+      "locked": {
+        "lastModified": 1714268160,
+        "narHash": "sha256-LNbwGgBT5EqfWN7pqYbj71VLLGQJqWkde3ToOhkM5vM=",
+        "owner": "srid",
+        "repo": "haskell-flake",
+        "rev": "5b0857e0b7feec60bf00e075f7859746d52b8564",
+        "type": "github"
+      },
+      "original": {
+        "owner": "srid",
+        "repo": "haskell-flake",
         "type": "github"
       }
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1713674382,
+        "lastModified": 1714314149,
-        "narHash": "sha256-1M/5T+D2obq8g5C3JZ2NnC4QGdbxcit5QkLd8ui3OYk=",
+        "narHash": "sha256-yNAevSKF4krRWacmLUsLK7D7PlfuY3zF0lYnGYNi9vQ=",
-        "owner": "NixOS",
+        "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "44fa1ee8c2b0a581804e101c8627339c3fa2fd96",
+        "rev": "cf8cc1201be8bc71b7cbbbdaf349b22f4f99c7ae",
         "type": "github"
       },
       "original": {
+        "owner": "nixos",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-lib": {
+      "locked": {
+        "dir": "lib",
+        "lastModified": 1711703276,
+        "narHash": "sha256-iMUFArF0WCatKK6RzfUJknjem0H9m4KgorO/p3Dopkk=",
         "owner": "NixOS",
         "repo": "nixpkgs",
+        "rev": "d8fe5e6c92d0d190646fb9f1056741a229980089",
+        "type": "github"
+      },
+      "original": {
+        "dir": "lib",
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
         "type": "github"
       }
     },
     "root": {
       "inputs": {
-        "flake-utils": "flake-utils",
+        "flake-parts": "flake-parts",
+        "haskell-flake": "haskell-flake",
         "nixpkgs": "nixpkgs"
       }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
     }
   },
   "root": "root",

flake.nix

@@ -1,52 +1,27 @@
 {
-  description = "A snake game in Haskell using Dunai";
-
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs";
+    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
-    flake-utils.url = "github:numtide/flake-utils";
+    flake-parts.url = "github:hercules-ci/flake-parts";
+    haskell-flake.url = "github:srid/haskell-flake";
+  };
+  outputs = inputs@{ self, nixpkgs, flake-parts, ... }:
+    flake-parts.lib.mkFlake { inherit inputs; } {
+      imports = [ inputs.haskell-flake.flakeModule ];
+
+      systems = nixpkgs.lib.systems.flakeExposed;
+      perSystem = { config, system, self', pkgs, ... }: {
+
+        _module.args.pkgs = import nixpkgs {
+          inherit system;
+          config.allowBroken = true;
         };
 
-  outputs = { self, nixpkgs, flake-utils, ... }:
+        haskellProjects.default = {
-    flake-utils.lib.eachDefaultSystem (system:
+          basePackages = pkgs.haskell.packages.ghc94;
-      let
-        pkgs = nixpkgs.legacyPackages.${system};
-        
-        # package/executable name
-        packageName = "snake";
-        execName = packageName;
-        
-        # version of ghc used
-        hp = pkgs.haskell.packages.ghc92;
-        
-        project = returnShellEnv:
-          hp.developPackage {
-            inherit returnShellEnv;
-            name = packageName;
-            root = ./.;
-            withHoogle = false;
-            modifier = drv:
-              pkgs.haskell.lib.addBuildTools drv (with hp; [
-                # Specify your build/dev dependencies here.
-                hlint
-                haskell-language-server
-                ormolu
-
-                pkgs.mesa
-                pkgs.mesa_glu
-                pkgs.freeglut
-              ]);
-          };
-      in
-      {
-        # Used by `nix build` & `nix run` (prod exe)
-        packages.default = project false;
-
-        apps.default = {
-          type = "app";
-          program = "${self.packages.${system}.default}/bin/${execName}";
         };
 
-        # Used by `nix develop` (dev shell)
+        packages.default = self'.packages.snake;
-        devShell = project true;
+        apps.default = self'.apps.snake;
-      });
+      };
+    };
 }

snake.cabal

@@ -9,6 +9,10 @@ build-type:    Simple
 executable snake
   hs-source-dirs: src
   main-is:        Main.hs
+  other-modules:  Game.Display,
+                  Game.Engine,
+                  Game.State,
+                  Game.Utils
   default-language:   GHC2021
   default-extensions: Arrows
   build-depends: base,