diff --git a/pkgs/by-name/ci/citron-emu/package.nix b/pkgs/by-name/ci/citron-emu/package.nix
new file mode 100644
index 0000000000000..0f10a33c5778a
--- /dev/null
+++ b/pkgs/by-name/ci/citron-emu/package.nix
@@ -0,0 +1,197 @@
+{
+  lib,
+  stdenv,
+  SDL2,
+  boost,
+  catch2_3,
+  cmake,
+  ninja,
+  fetchFromGitea,
+  cpp-jwt,
+  cubeb,
+  gamemode,
+  discord-rpc,
+  enet,
+  fetchzip,
+  ffmpeg-headless,
+  fmt,
+  glslang,
+  openal,
+  libopus,
+  libusb1,
+  libva,
+  lz4,
+  python3,
+  wrapGAppsHook3,
+  nlohmann_json,
+  rapidjson,
+  openssl,
+  pkg-config,
+  qt6,
+  spirv-tools,
+  spirv-headers,
+  vulkan-utility-libraries,
+  vulkan-headers,
+  vulkan-loader,
+  simpleini,
+  zlib,
+  vulkan-memory-allocator,
+  zstd,
+  withDiscordPresence ? true,
+  withOptimisation ? false,
+}:
+let
+  nx_tzdbVersion = "221202";
+  nx_tzdb = fetchzip {
+    url = "https://github.com/lat9nq/tzdb_to_nx/releases/download/${nx_tzdbVersion}/${nx_tzdbVersion}.zip";
+    hash = "sha256-YOIElcKTiclem05trZsA3YJReozu/ex7jJAKD6nAMwc=";
+    stripRoot = false;
+  };
+  inherit (qt6)
+    qtbase
+    qtmultimedia
+    qttools
+    qtwayland
+    qtwebengine
+    wrapQtAppsHook
+    ;
+in
+stdenv.mkDerivation (finalAttrs: {
+  pname = "citron-emu";
+  version = "0.12.25";
+  src = fetchFromGitea {
+    fetchSubmodules = true;
+    domain = "git.citron-emu.org";
+    owner = "Citron";
+    repo = "Emulator";
+    tag = finalAttrs.version;
+    hash = "sha256-Su+SvCb6KDF9/ilb6Y/RZTOq/ffaMTWiJZy8nmGZ3n4=";
+  };
+
+  nativeBuildInputs = [
+    cmake
+    ninja
+    glslang
+    pkg-config
+    python3
+    qttools
+    wrapGAppsHook3
+    wrapQtAppsHook
+  ];
+
+  buildInputs = [
+    vulkan-headers
+    boost
+    catch2_3
+    cpp-jwt
+    cubeb
+    enet
+    ffmpeg-headless
+    fmt
+    openal
+    libopus
+    libusb1
+    libva
+    lz4
+    nlohmann_json
+    rapidjson
+    openssl
+    qtbase
+    qtmultimedia
+    qtwayland
+    qtwebengine
+    gamemode
+    SDL2
+    simpleini
+    spirv-tools
+    spirv-headers
+    vulkan-loader
+    vulkan-memory-allocator
+    vulkan-utility-libraries
+    zlib
+    zstd
+  ]
+  ++ lib.optionals withDiscordPresence [
+    discord-rpc
+  ];
+
+  __structuredAttrs = true;
+  cmakeFlags = [
+    (lib.cmakeFeature "CMAKE_POLICY_VERSION_MINIMUM" "3.5")
+    (lib.cmakeBool "CITRON_ENABLE_LTO" true)
+    (lib.cmakeBool "CITRON_TESTS" false)
+    (lib.cmakeBool "ENABLE_QT" true)
+    (lib.cmakeBool "USE_SYSTEM_QT" true)
+    (lib.cmakeBool "ENABLE_QT_TRANSLATION" true)
+    (lib.cmakeBool "CITRON_USE_EXTERNAL_SDL2" false)
+    (lib.cmakeBool "CITRON_USE_EXTERNAL_VULKAN_HEADERS" false)
+    (lib.cmakeBool "CITRON_USE_EXTERNAL_VULKAN_UTILITY_LIBRARIES" false)
+    (lib.cmakeBool "CITRON_USE_EXTERNAL_VULKAN_SPIRV_TOOLS" false)
+    (lib.cmakeBool "CITRON_DOWNLOAD_TIME_ZONE_DATA" false)
+    (lib.cmakeBool "CITRON_CHECK_SUBMODULES" false)
+    (lib.cmakeBool "CITRON_USE_QT_WEB_ENGINE" true)
+    (lib.cmakeBool "CITRON_USE_QT_MULTIMEDIA" true)
+    (lib.cmakeBool "USE_DISCORD_PRESENCE" withDiscordPresence)
+    (lib.cmakeBool "CITRON_ENABLE_COMPATIBILITY_REPORTING" false)
+    (lib.cmakeBool "CITRON_USE_AUTO_UPDATER" false)
+    (lib.cmakeFeature "TITLE_BAR_FORMAT_IDLE" "${finalAttrs.pname} | ${finalAttrs.version} (nixpkgs) {}")
+    (lib.cmakeFeature "TITLE_BAR_FORMAT_RUNNING" "${finalAttrs.pname} | ${finalAttrs.version} (nixpkgs) | {}")
+  ]
+  ++ lib.optionals withOptimisation [
+    (lib.cmakeFeature "CMAKE_C_FLAGS" "-march=x86-64-v3")
+    (lib.cmakeFeature "CMAKE_CXX_FLAGS" "-march=x86-64-v3")
+  ];
+
+  env = {
+    NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isx86_64 "-msse4.1";
+  };
+
+  dontWrapGApps = true;
+  preFixup = ''
+    qtWrapperArgs+=("''${gappsWrapperArgs[@]}")
+  '';
+
+  preConfigure = ''
+    # provide pre-downloaded tz data
+    mkdir -p build/externals/nx_tzdb
+    ln -s ${nx_tzdb} build/externals/nx_tzdb/nx_tzdb
+  '';
+
+  postPatch = ''
+    # --- Qt 6.10: use GuiPrivate so qpa/qplatformnativeinterface.h is found ---
+
+    # Add GuiPrivate to the Qt6 components
+    substituteInPlace CMakeLists.txt \
+      --replace-fail "find_package(Qt6 REQUIRED COMPONENTS Widgets Multimedia Concurrent)" \
+                "find_package(Qt6 REQUIRED COMPONENTS Widgets Multimedia Concurrent GuiPrivate)"
+
+    # Link Qt6::GuiPrivate into the GUI target so its private headers are on the include path
+    substituteInPlace src/citron/CMakeLists.txt \
+      --replace-fail "target_link_libraries(citron PRIVATE Boost::headers" \
+                "target_link_libraries(citron PRIVATE Boost::headers Qt6::GuiPrivate"
+  '';
+
+  postInstall = ''
+    install -Dm444 $src/dist/72-citron-input.rules $out/lib/udev/rules.d/72-citron-input.rules
+  '';
+
+  passthru = {
+    inherit nx_tzdb;
+  };
+
+  meta = {
+    homepage = "https://citron-emu.org";
+    changelog = "https://git.citron-emu.org/Citron/Emulator/releases/tag/${finalAttrs.version}";
+    description = "Nintendo Switch emulator for PC";
+    mainProgram = "citron";
+    platforms = [ "x86_64-linux" ];
+    license = with lib.licenses; [
+      gpl3Plus
+      # Icons
+      asl20
+      mit
+      cc0
+    ];
+    maintainers = with lib.maintainers; [ samemrecebi ];
+  };
+})