diff --git a/derivations/wiiu-downloader/default.nix b/derivations/wiiu-downloader/default.nix
index b7d1b357..abec6602 100644
--- a/derivations/wiiu-downloader/default.nix
+++ b/derivations/wiiu-downloader/default.nix
@@ -2,16 +2,87 @@
   lib,
   stdenv,
   pkgs,
-  fetchurl
+  fetchurl,
+  fetchFromGitHub,
+  gsettings-desktop-schemas,
+  gtk3
 }:
-pkgs.appimageTools.wrapType2 rec {
-  name = "WiiUDownloader";
-  version = "v1.32";
 
-  src = fetchurl {
-    url = "https://github.com/Xpl0itU/WiiUDownloader/releases/download/${version}/WiiUDownloader-Linux-x86_64.AppImage";
-    sha256 = "";
+# TODO: This doesn't run. Why does it work like this (APPIMAGE_DEBUG_EXEC=bash appimage-run WiiUDownloader-Linux-x86_64.AppImage) though?
+# pkgs.appimageTools.wrapType2 rec {
+#   name = "WiiUDownloader";
+#   version = "v1.32";
+
+#   src = fetchurl {
+#     url = "https://github.com/Xpl0itU/WiiUDownloader/releases/download/${version}/WiiUDownloader-Linux-x86_64.AppImage";
+#     sha256 = "sha256-YWLQd/Wmz5BDyc+oe6JQkT849DaPc5HtJXIDZKUdHNE=";
+#   };
+
+#   profile = ''
+#     export XDG_DATA_DIRS=${gsettings-desktop-schemas}/share/gsettings-schemas/${gsettings-desktop-schemas.name}:${gtk3}/share/gsettings-schemas/${gtk3.name}:$XDG_DATA_DIRS
+#   '';
+
+#   # extraPkgs = pkgs: with pkgs; [
+#   # ];
+# }
+let
+  titlesfile = fetchurl {
+    url = "https://napi.nbg01.v10lator.de/db";
+    sha256 = "sha256-7B37evlqSE9ZmUM3bND+/I8IUhU4kbvIfwtGrNu0i9A=";
+    curlOptsList = ["--user-agent" "NUSspliBuilder/2.1"];
   };
 
-  extraPackages = with pkgs; [];
-}
+  wiiu-downloader = stdenv.mkDerivation {
+    name = "WiiUDownloader";
+
+    src = fetchFromGitHub {
+      owner = "Xpl0itU";
+      repo = "WiiUDownloader";
+      rev = "v1.32";
+
+      # NOTE: When supplying the hash without submodules for fetchFromGitHub with fetchSubmodules = true, the derivation
+      #       will just fail, without a hash mismatch but empty submodule directories!!!
+      sha256 = "sha256-R3FiNiK27Q2x5HbHmWw3F4LPJNKz5BAoOyl4fYAEQlc=";
+
+      fetchSubmodules = true;
+    };
+
+    nativeBuildInputs = with pkgs; [
+      gcc
+      gnumake
+      cmake
+      pkg-config
+      python310
+    ];
+
+    buildInputs = with pkgs; [
+      gsettings-desktop-schemas
+      gtk3
+      gtkmm3
+      mbedtls
+      curl
+    ];
+
+    dontUseCmakeConfigure = true;
+
+    patches = [
+      ./gtitles.patch
+    ];
+
+    buildPhase = ''
+      cp ${titlesfile} src/gtitles.c
+      python build.py
+    '';
+
+    installPhase = ''
+      runHook preInstall
+
+      mkdir -p $out/bin
+      cp build/WiiUDownloader $out/bin
+
+      runHook postInstall
+    '';
+  };
+in pkgs.writeShellScriptBin "wiiu-downloader-wrapped" ''
+  XDG_DATA_DIRS="${gsettings-desktop-schemas}/share/gsettings-schemas/${gsettings-desktop-schemas.name}:${gtk3}/share/gsettings-schemas/${gtk3.name}:$XDG_DATA_DIRS" ${wiiu-downloader}/bin/WiiUDownloader
+''