diff --git a/pkgs/by-name/nu/nucleus/package.nix b/pkgs/by-name/nu/nucleus/package.nix
new file mode 100644
index 000000000000..96fd47a7c1fe
--- /dev/null
+++ b/pkgs/by-name/nu/nucleus/package.nix
@@ -0,0 +1,65 @@
+{
+  lib,
+  python3Packages,
+  fetchFromGitea,
+  ninja,
+  meson,
+  pkg-config,
+  wrapGAppsHook4,
+  glib,
+  desktop-file-utils,
+  appstream-glib,
+  blueprint-compiler,
+  libadwaita,
+  nix-update-script,
+}:
+let
+  version = "1";
+in
+python3Packages.buildPythonApplication {
+  pname = "nucleus";
+  inherit version;
+  pyproject = false;
+
+  src = fetchFromGitea {
+    domain = "codeberg.org";
+    owner = "lo-vely";
+    repo = "nucleus";
+    tag = "v${version}";
+    hash = "sha256-8y3sbtfq4hZuEwReduIkud91SOj9XrURrZRUs2M74mQ=";
+  };
+
+  nativeBuildInputs = [
+    meson
+    ninja
+    pkg-config
+    wrapGAppsHook4
+    glib
+    desktop-file-utils
+    appstream-glib
+    blueprint-compiler
+  ];
+
+  dependencies = with python3Packages; [
+    pygobject3
+  ];
+
+  buildInputs = [
+    libadwaita
+  ];
+
+  dontWrapGApps = true;
+  makeWrapperArgs = [ "\${gappsWrapperArgs[@]}" ];
+
+  passthru.updateScript = nix-update-script { };
+
+  meta = {
+    description = "Unofficial GNOME Periodic Table";
+    homepage = "https://codeberg.org/lo-vely/nucleus";
+    changelog = "https://codeberg.org/lo-vely/nucleus/releases/tag/v${version}";
+    license = lib.licenses.gpl3Plus;
+    mainProgram = "nucleus";
+    platforms = lib.platforms.linux;
+    maintainers = [ lib.maintainers.awwpotato ];
+  };
+}