diff --git a/flake.nix b/flake.nix
index 5695498..e745bbd 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,18 +1,13 @@
 {
   inputs.nixpkgs.url = "github:NixOS/nixpkgs?ref=nixos-unstable";
 
-  outputs = {
-    self,
-    nixpkgs,
-    ...
-  }: let
+  outputs = {nixpkgs, ...}: let
     systems = ["x86_64-linux" "aarch64-linux"];
     forEachSystem = nixpkgs.lib.genAttrs systems;
     pkgsForEach = nixpkgs.legacyPackages;
   in {
     packages = forEachSystem (system: {
-      rogged = pkgsForEach.${system}.callPackage ./nix/package.nix {};
-      default = self.packages.${system}.rogged;
+      default = pkgsForEach.${system}.callPackage ./nix/package.nix {};
     });
 
     devShells = forEachSystem (system: {
diff --git a/nix/package.nix b/nix/package.nix
index 0177a10..8fb5c18 100644
--- a/nix/package.nix
+++ b/nix/package.nix
@@ -5,23 +5,14 @@
   raylib,
   pkg-config,
 }:
-stdenv.mkDerivation {
+stdenv.mkDerivation (finalAttrs: {
   pname = "rogged";
   version = "0.0.1";
 
-  src = let
-    fs = lib.fileset;
-    s = ../.;
-  in
-    fs.toSource {
-      root = s;
-      fileset = fs.unions [
-        (s + /assets)
-        (s + /libs)
-        (s + /src)
-        (s + /build.zig)
-      ];
-    };
+  src = builtins.path {
+    path = ../.;
+    name = finalAttrs.pname;
+  };
 
   nativeBuildInputs = [
     zig
@@ -30,9 +21,25 @@ stdenv.mkDerivation {
 
   buildInputs = [raylib];
 
+  dontConfigure = true;
+
+  buildPhase = ''
+    runHook preBuild
+    export ZIG_GLOBAL_CACHE_DIR="$TMPDIR/zig-cache"
+    zig build --release=fast
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+    mkdir -p $out/bin
+    cp zig-out/bin/roguelike $out/bin/
+    runHook postInstall
+  '';
+
   meta = {
     description = "A turn-based roguelike game";
     license = lib.licenses.mit;
     mainProgram = "roguelike";
   };
-}
+})