update flake

flake.lock

@@ -0,0 +1,42 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1667395993,
+        "narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1669897001,
+        "narHash": "sha256-5xESSKSgBPhjctRYUzES8RiMo+OmA2E/D74RNULQb9M=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "dcc26b62da6963053c299af3e19b89b94924edec",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -31,6 +31,10 @@
             ghcid
             cabal-install
           ];
+          nativeBuildInputs = with pkgs; [
+            pkg-config
+            SDL2
+          ];
           inputsFrom = builtins.attrValues self.packages.${system};
         };
       });