diff --git a/flake.nix b/flake.nix
index bce654c..b97d08c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -13,7 +13,16 @@
         "aarch64-darwin"
       ];
       forAllSystems =
-        f: nixpkgs.lib.genAttrs allSystems (system: f { pkgs = import nixpkgs { inherit system; }; });
+        f:
+        nixpkgs.lib.genAttrs allSystems (
+          system:
+          f {
+            pkgs = import nixpkgs {
+              inherit system;
+              config.allowUnfree = true;
+            };
+          }
+        );
     in
     {
       overlays = {
diff --git a/pkgs/noita-entangled-worlds/default.nix b/pkgs/noita-entangled-worlds/default.nix
index b9df332..7625ef6 100644
--- a/pkgs/noita-entangled-worlds/default.nix
+++ b/pkgs/noita-entangled-worlds/default.nix
@@ -1,5 +1,4 @@
 {
-  lib,
   alsa-lib,
   gtk3,
   fetchFromGitHub,
@@ -11,52 +10,54 @@
   cmake,
   libopus,
   steam-run,
+  writeShellApplication,
 }:
+let
+  entangled = rustPlatform.buildRustPackage rec {
+    pname = "noita-entangled-worlds-proxy";
+    version = "v1.5.1";
 
-rustPlatform.buildRustPackage rec {
-  pname = "noita-entangled-worlds-proxy";
-  version = "v1.5.1";
+    src = fetchFromGitHub {
+      owner = "IntQuant";
+      repo = "noita_entangled_worlds";
+      rev = version;
+      hash = "sha256-v5aulgWkPhgkPHfHb1j/39JauKfFhFCHRfBgm2UJHYc=";
+    };
 
-  src = fetchFromGitHub {
-    owner = "IntQuant";
-    repo = "noita_entangled_worlds";
-    rev = version;
-    hash = "sha256-v5aulgWkPhgkPHfHb1j/39JauKfFhFCHRfBgm2UJHYc=";
+    sourceRoot = "${src.name}/noita-proxy";
+
+    useFetchCargoVendor = true;
+    cargoHash = "sha256-1YkLTp3QUaC1oU1SwmuOJMTklptfZu2gIonDyLfLhCk=";
+    buildInputs = [
+      gtk3
+      openssl
+      jack2
+      alsa-lib
+      libopus
+    ];
+    nativeBuildInputs = [
+      pkg-config
+      python3
+      cmake
+    ];
+    preInstall = ''
+      mkdir -p $out/share/lib64/noita-proxy
+      cp -r ${src}/redist/libsteam_api.so $out/share/lib64/noita-proxy
+    '';
+    checkFlags = [
+      # reason for disabling test
+      "--skip=bookkeeping::releases::test::release_assets"
+    ];
   };
-
-  sourceRoot = "${src.name}/noita-proxy";
-
-  useFetchCargoVendor = true;
-  cargoHash = "sha256-1YkLTp3QUaC1oU1SwmuOJMTklptfZu2gIonDyLfLhCk=";
-  buildInputs = [
-    gtk3
-    openssl
-    jack2
-    alsa-lib
-    libopus
-  ];
-  nativeBuildInputs = [
-    pkg-config
-    python3
-    cmake
+in
+writeShellApplication {
+  name = "noita-proxy-${entangled.version}";
+  runtimeInputs = [
+    entangled
     steam-run
   ];
-  preInstall = ''
-    mkdir -p $out/share/lib64/noita-proxy
-    cp ${src}/redist/libsteam_api.so $out/share/lib64/noita-proxy
+  text = ''
+    export LD_PRELOAD=${entangled}/share/lib64/noita-proxy/libsteam_api.so
+    exec steam-run "${entangled}/bin/noita-proxy" "$@"
   '';
-  postInstall = ''
-    mv $out/bin/noita-proxy $out/bin/noita-proxy-unwrapped
-    cat > $out/bin/noita-proxy <<EOF
-      #!/usr/bin/env bash
-
-      export LD_PRELOAD=$out/share/lib64/noita-proxy/libsteam_api.so
-      exec ${steam-run}/bin/steam-run $out/bin/noita-proxy-unwrapped
-    EOF
-    chmod +x $out/bin/noita-proxy
-  '';
-  checkFlags = [
-    # reason for disabling test
-    "--skip=bookkeeping::releases::test::release_assets"
-  ];
 }