diff --git a/packages/rounded-blur/default.nix b/packages/rounded-blur/default.nix
new file mode 100644
index 0000000..b954815
--- /dev/null
+++ b/packages/rounded-blur/default.nix
@@ -0,0 +1,89 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  meson,
+  ninja,
+  pkg-config,
+  gobject-introspection,
+  glib,
+  gnome,
+  mutter,
+  cairo,
+  gsettings-desktop-schemas,
+  wayland,
+  libglvnd,
+  libxfixes,
+  libxi,
+  atk,
+  libxkbcommon,
+  clutter,
+  cmake,
+  gnome-shell,
+  lcms2,
+}:
+
+stdenv.mkDerivation {
+  pname = "gnome-rounded-blur";
+  version = "unstable-2026-06-11";
+
+  src = fetchFromGitHub {
+    owner = "kancko";
+    repo = "gnome-rounded-blur";
+    # Replace this with a fixed commit.
+    rev = "master";
+    # Run once with lib.fakeHash, then replace with the real hash.
+    hash = "sha256-hiWQaYydlyIMHKsx49f7sGOLM9ev1g1kdlloUszZU8I=";
+  };
+
+  nativeBuildInputs = [
+    meson
+    ninja
+    pkg-config
+    gobject-introspection
+    cmake
+  ];
+
+  buildInputs = [
+    glib
+    mutter
+    cairo
+    gsettings-desktop-schemas
+    wayland
+    libglvnd
+    libxfixes
+    libxi
+    atk
+    libxkbcommon
+    clutter
+    (lib.getDev mutter)
+    (lib.getLib mutter)
+    (lib.getDev gnome-shell)
+    (lib.getLib gnome-shell)
+    lcms2 # required by mutter-clutter
+  ];
+  postFixup = ''
+    for libfile in $out/lib/libblur-effect-1.0.so*; do
+      if [ -f "$libfile" ] && [ ! -L "$libfile" ]; then
+        patchelf --set-rpath "${
+          lib.makeLibraryPath [
+            glib
+            wayland
+            (lib.getLib mutter)
+          ]
+        }:$out/lib" "$libfile"
+      fi
+    done
+  '';
+  # The upstream meson file installs:
+  # - libblur-effect-1.0.so*
+  # - Blur-1.0.gir
+  # - Blur-1.0.typelib
+  # See src/meson.build.
+  meta = {
+    description = "Rounded blur GObject library for GNOME Shell extensions";
+    homepage = "https://github.com/kancko/gnome-rounded-blur";
+    license = lib.licenses.gpl3Plus;
+    platforms = lib.platforms.linux;
+  };
+}
\ No newline at end of file
diff --git a/packages/rounded-windows-bms/default.nix b/packages/rounded-windows-bms/default.nix
new file mode 100644
index 0000000..fe8a50e
--- /dev/null
+++ b/packages/rounded-windows-bms/default.nix
@@ -0,0 +1,53 @@
+{
+  lib,
+  stdenvNoCC,
+  fetchFromGitHub,
+  glib,
+}:
+
+stdenvNoCC.mkDerivation rec {
+  pname = "rounded-windows-bms";
+  version = "2.2.0-bms-fix";
+
+  src = fetchFromGitHub {
+    owner = "MeguMario";
+    repo = "rounded-windows";
+    rev = "bms-fix";
+
+    # Put a fake hash first; Nix will tell you the real one.
+    hash = "sha256-5llnqW1dK3jsMRfvxb1VrSkZ/DSXsfU3PiNmpbb5CLw=";
+  };
+
+  nativeBuildInputs = [
+    glib
+  ];
+
+  installPhase = ''
+    runHook preInstall
+
+    uuid="rounded-windows@marcosgt.github.io"
+    extension_dir="$out/share/gnome-shell/extensions/$uuid"
+
+    mkdir -p "$extension_dir"
+
+    cp metadata.json extension.js effect.js prefs.js stylesheet.css "$extension_dir/"
+
+    mkdir -p "$extension_dir/schemas"
+    cp schemas/*.xml "$extension_dir/schemas/"
+
+    glib-compile-schemas "$extension_dir/schemas"
+
+    runHook postInstall
+  '';
+
+  passthru = {
+    extensionUuid = "rounded-windows@marcosgt.github.io";
+  };
+
+  meta = {
+    description = "Rounded Window Corners GNOME extension with Blur-My-Shell compatibility fix";
+    homepage = "https://github.com/MeguMario/rounded-windows/tree/bms-fix";
+    license = lib.licenses.gpl3Only;
+    platforms = lib.platforms.linux;
+  };
+}
\ No newline at end of file