diff --git a/pkgs/desktops/lomiri/applications/lomiri-clock-app/default.nix b/pkgs/desktops/lomiri/applications/lomiri-clock-app/default.nix
new file mode 100644
index 000000000000..cd380838bb99
--- /dev/null
+++ b/pkgs/desktops/lomiri/applications/lomiri-clock-app/default.nix
@@ -0,0 +1,219 @@
+{
+  stdenv,
+  lib,
+  fetchFromGitLab,
+  fetchpatch,
+  gitUpdater,
+  cmake,
+  content-hub,
+  geonames,
+  gettext,
+  libusermetrics,
+  lomiri-sounds,
+  lomiri-ui-toolkit,
+  makeWrapper,
+  pkg-config,
+  qtbase,
+  qtdeclarative,
+  qtmultimedia,
+  qtpositioning,
+  qtsystems,
+  runtimeShell,
+  u1db-qt,
+  wrapQtAppsHook,
+  xvfb-run,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "lomiri-clock-app";
+  version = "4.0.3";
+
+  src = fetchFromGitLab {
+    owner = "ubports";
+    repo = "development/apps/lomiri-clock-app";
+    rev = "v${finalAttrs.version}";
+    hash = "sha256-q/hdnwHO97bhL0W3VsdHwjPvGs6GhWbDiVLCx4NiR50=";
+  };
+
+  patches = [
+    # Fix dispatching to clock app via LUD
+    # Remove when version > 4.0.3
+    (fetchpatch {
+      name = "0001-lomiri-clock-app-Fix-non-click-lomiri-url-dispatcher-support.patch";
+      url = "https://gitlab.com/ubports/development/apps/lomiri-clock-app/-/commit/493888b41489b360415d1a0d0e431754afdee2b0.patch";
+      hash = "sha256-sI7YDrWjV0bSAq0vdSvNcWCLhmEEb10T7jd2kYfSfZU=";
+    })
+
+    # Fix GNUInstallDirs variables usage
+    # Remove when https://gitlab.com/ubports/development/apps/lomiri-clock-app/-/merge_requests/215 merged & in release
+    (fetchpatch {
+      name = "0002-lomiri-clock-app-Fix-GNUInstallDirs-variable-concatenations-in-CMake.patch";
+      url = "https://gitlab.com/ubports/development/apps/lomiri-clock-app/-/commit/33c62d0382f69462de0567628d7a6ef162944e12.patch";
+      hash = "sha256-JEoRjc6RugtznNtgJsXz9wnAL/7fkoog40EVl7uu2pc=";
+    })
+
+    # Fix installation of splash icon
+    # Remove when https://gitlab.com/ubports/development/apps/lomiri-clock-app/-/merge_requests/216 merged & in release
+    (fetchpatch {
+      name = "0003-lomiri-clock-app-Fix-splash-file-installation-in-non-clock-mode.patch";
+      url = "https://gitlab.com/ubports/development/apps/lomiri-clock-app/-/commit/97fd6fd91ee787dfe107bd36bc895f2ff234b5e3.patch";
+      hash = "sha256-g9eR6yYgKFDohuZMs1Ub0TwPM2AWbwWLDvZMrT4gMls=";
+    })
+
+    # Port from qmlscene to dedicated C++ entry, and apply abunch of fixes that this move enables
+    # Remove when https://gitlab.com/ubports/development/apps/lomiri-clock-app/-/merge_requests/217 merged & in release
+    (fetchpatch {
+      name = "0004-lomiri-clock-app-Migrate-to-C++-app.patch";
+      url = "https://gitlab.com/ubports/development/apps/lomiri-clock-app/-/commit/c690d65baf2d28f99364dec2244f8d4ebdb09178.patch";
+      hash = "sha256-JCQFlHFAXbgiSGNtEsq/khblhAD/3BdE68Qctn7j5T0=";
+    })
+    (fetchpatch {
+      name = "0005-lomiri-clock-app-Call-i18n.bindtextdomain-and-fix-app-icon-load.patch";
+      url = "https://gitlab.com/ubports/development/apps/lomiri-clock-app/-/commit/0619730ca639228b1c0a3403082a6a13e2fe3ff3.patch";
+      hash = "sha256-NQQYvJ141fU2iQ+xzYoNkuuzvqQg1BGZNGq24u8i1is=";
+    })
+    (fetchpatch {
+      name = "0006-lomiri-clock-app-Pass-through-project-version.patch";
+      url = "https://gitlab.com/ubports/development/apps/lomiri-clock-app/-/commit/ae1467fe44813eef2fc6cc4b9d6ddc02edee7640.patch";
+      hash = "sha256-E6yk5H+YVH4oSg6AIAJ+Rynu0HFkNomX7sTjM/x37PU=";
+    })
+    (fetchpatch {
+      name = "0007-lomiri-clock-app-Fix-tests-after-module-changes.patch";
+      url = "https://gitlab.com/ubports/development/apps/lomiri-clock-app/-/commit/40cbd7847c4a850184e553ac5b8981672b7deed0.patch";
+      hash = "sha256-AA4KRYZNBQ0/Nk65kyzzDFhs/zWO7fb5f2Toy1diPBg=";
+    })
+
+    # Don't ignore PATH when looking for qmltestrunner, saves us a patch for hardcoded fallback
+    # Remove when https://gitlab.com/ubports/development/apps/lomiri-clock-app/-/merge_requests/218 merged & in release
+    (fetchpatch {
+      name = "0008-lomiri-clock-app-tests-Drop-NO_DEFAULT_PATH.patch";
+      url = "https://gitlab.com/ubports/development/apps/lomiri-clock-app/-/commit/190ef47e2efaaf139920d0556e0522f95479ea95.patch";
+      hash = "sha256-jy4E+VfVyRu99eGqbhlYi/xjDgPajozHPSlqEcGVOA4=";
+    })
+
+    # Make tests honour BUILD_TESTING
+    # Remove when https://gitlab.com/ubports/development/apps/lomiri-clock-app/-/merge_requests/219 merged & in release
+    (fetchpatch {
+      name = "0009-lomiri-clock-app-tests-Honour-BUILD_TESTING.patch";
+      url = "https://gitlab.com/ubports/development/apps/lomiri-clock-app/-/commit/b0ca583238f011e23a99286a1d2b61f2dcd85303.patch";
+      hash = "sha256-TyM5Y8BRAqinvZiZ5TEXd5caVesFluPi6iGmTS1wRlI=";
+    })
+  ];
+
+  postPatch = ''
+    # Part of 493888b41489b360415d1a0d0e431754afdee2b0 patch, but neither fetchpatch nor fetchpatch2 can handle a rename-only change to a file
+    # Remove when version > 4.0.3
+    mv clock.ubports_clock.url-dispatcher lomiri-clock-app.url-dispatcher
+
+    # QT_IMPORTS_DIR returned by qmake -query is broken
+    substituteInPlace CMakeLists.txt \
+      --replace-fail 'qmake -query QT_INSTALL_QML' 'echo ''${CMAKE_INSTALL_PREFIX}/${qtbase.qtQmlPrefix}' \
+
+    # We don't want absolute paths in desktop files
+    substituteInPlace lomiri-clock-app.desktop.in.in \
+      --replace-fail '@ICON@' 'lomiri-clock-app' \
+      --replace-fail '@SPLASH@' 'lomiri-app-launch/splash/lomiri-clock-app.svg'
+
+    # Path to alarm sounds
+    # TODO maybe change to /run/current-system/sw instead to pick up all installed sounds?
+    substituteInPlace app/alarm/AlarmSound.qml backend/modules/Alarm/sound.cpp \
+      --replace-fail '/usr' '${lomiri-sounds}'
+  '';
+
+  strictDeps = true;
+
+  nativeBuildInputs = [
+    cmake
+    gettext
+    makeWrapper
+    pkg-config
+    wrapQtAppsHook
+  ];
+
+  buildInputs = [
+    geonames
+    qtbase
+
+    # QML
+    content-hub
+    libusermetrics
+    lomiri-ui-toolkit
+    qtdeclarative
+    qtmultimedia
+    qtpositioning
+    qtsystems
+    u1db-qt
+  ];
+
+  nativeCheckInputs = [
+    qtdeclarative # qmltestrunner
+    xvfb-run
+  ];
+
+  dontWrapGApps = true;
+
+  cmakeFlags = [
+    (lib.cmakeBool "CLICK_MODE" false)
+    (lib.cmakeBool "INSTALL_TESTS" false)
+    (lib.cmakeBool "USE_XVFB" true)
+    (lib.cmakeFeature "CMAKE_CTEST_ARGUMENTS" (
+      lib.concatStringsSep ";" [
+        # Exclude tests
+        "-E"
+        (lib.strings.escapeShellArg "(${
+          lib.concatStringsSep "|" [
+            # Runs into ShapeMaterial codepath in lomiri-ui-toolkit which needs OpenGL, see LUITK for details
+            "^AlarmLabel"
+            "^AlarmRepeat"
+            "^AlarmSound"
+          ]
+        })")
+      ]
+    ))
+  ];
+
+  doCheck = stdenv.buildPlatform.canExecute stdenv.hostPlatform;
+
+  preCheck =
+    let
+      listToQtVar = suffix: lib.makeSearchPathOutput "bin" suffix;
+    in
+    ''
+      export QT_PLUGIN_PATH=${listToQtVar qtbase.qtPluginPrefix [ qtbase ]}
+      export QML2_IMPORT_PATH=${
+        listToQtVar qtbase.qtQmlPrefix (
+          [
+            content-hub
+            lomiri-ui-toolkit
+            qtmultimedia
+            u1db-qt
+          ]
+          ++ lomiri-ui-toolkit.propagatedBuildInputs
+        )
+      }
+    '';
+
+  # Parallelism breaks xvfb-run usage
+  enableParallelChecking = false;
+
+  postInstall = ''
+    mkdir -p $out/share/{icons/hicolor/scalable/apps,lomiri-app-launch/splash}
+
+    ln -s $out/share/lomiri-clock-app/clock-app.svg $out/share/icons/hicolor/scalable/apps/lomiri-clock-app.svg
+    ln -s $out/share/lomiri-clock-app/clock-app-splash.svg $out/share/lomiri-app-launch/splash/lomiri-clock-app.svg
+  '';
+
+  passthru = {
+    updateScript = gitUpdater { rev-prefix = "v"; };
+  };
+
+  meta = {
+    description = "Simple and easy to use clock for Ubuntu Touch, with time zone support for cities and timer and count down functions";
+    homepage = "https://gitlab.com/ubports/development/apps/lomiri-clock-app";
+    changelog = "https://gitlab.com/ubports/development/apps/lomiri-clock-app/-/blob/v${finalAttrs.version}/ChangeLog";
+    license = lib.licenses.gpl3Only;
+    maintainers = lib.teams.lomiri.members;
+    mainProgram = "lomiri-clock-app";
+    platforms = lib.platforms.linux;
+  };
+})
diff --git a/pkgs/desktops/lomiri/default.nix b/pkgs/desktops/lomiri/default.nix
index a9ec060a35ed..5cf0fe22caaf 100644
--- a/pkgs/desktops/lomiri/default.nix
+++ b/pkgs/desktops/lomiri/default.nix
@@ -10,6 +10,7 @@ let
     #### Core Apps
     lomiri = callPackage ./applications/lomiri { };
     lomiri-calculator-app = callPackage ./applications/lomiri-calculator-app { };
+    lomiri-clock-app = callPackage ./applications/lomiri-clock-app { };
     lomiri-filemanager-app = callPackage ./applications/lomiri-filemanager-app { };
     lomiri-system-settings-unwrapped = callPackage ./applications/lomiri-system-settings { };
     lomiri-system-settings-security-privacy = callPackage ./applications/lomiri-system-settings/plugins/lomiri-system-settings-security-privacy.nix { };