diff --git a/pkgs/applications/misc/gnome-extension-manager/default.nix b/pkgs/applications/misc/gnome-extension-manager/default.nix
new file mode 100644
index 000000000000..bcc66b19cf2b
--- /dev/null
+++ b/pkgs/applications/misc/gnome-extension-manager/default.nix
@@ -0,0 +1,67 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+, wrapGAppsHook4
+, libadwaita
+, meson
+, ninja
+, gettext
+, gtk4
+, appstream-glib
+, desktop-file-utils
+, gobject-introspection
+, blueprint-compiler
+, pkg-config
+, json-glib
+, libsoup_3
+, glib
+, libbacktrace
+, python3
+, text-engine
+}:
+
+stdenv.mkDerivation rec {
+  pname = "gnome-extension-manager";
+  version = "0.4.0";
+
+  src = fetchFromGitHub {
+    owner = "mjakeman";
+    repo = "extension-manager";
+    rev = "v${version}";
+    sha256 = "sha256-M+jMEJXtzUP6dQp9vpyMhh1wuKG9YJ8i0ys92nbmmpw=";
+  };
+
+  nativeBuildInputs = [
+    appstream-glib
+    desktop-file-utils
+    gettext
+    glib
+    gobject-introspection
+    libadwaita
+    meson
+    ninja
+    pkg-config
+    python3
+    wrapGAppsHook4
+  ];
+
+  buildInputs = [
+    blueprint-compiler
+    gtk4
+    json-glib
+    libsoup_3
+    libbacktrace
+    text-engine
+  ];
+
+  # See https://github.com/NixOS/nixpkgs/issues/36468.
+  mesonFlags = [ "-Dc_args=-I${glib.dev}/include/gio-unix-2.0" ];
+
+  meta = with lib; {
+    description = "Desktop app for managing GNOME shell extensions";
+    homepage = "https://github.com/mjakeman/extension-manager";
+    license = licenses.gpl3Plus;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ foo-dogsquared ];
+  };
+}
diff --git a/pkgs/development/libraries/text-engine/default.nix b/pkgs/development/libraries/text-engine/default.nix
new file mode 100644
index 000000000000..f578ae000baf
--- /dev/null
+++ b/pkgs/development/libraries/text-engine/default.nix
@@ -0,0 +1,34 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+, meson
+, ninja
+, json-glib
+, gtk4
+, libxml2
+, gobject-introspection
+, pkg-config
+, libadwaita
+}:
+
+stdenv.mkDerivation rec {
+  pname = "text-engine";
+  version = "0.1.1";
+  src = fetchFromGitHub {
+    owner = "mjakeman";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-YSG4Vk3hrmtaJkK1WAlQcdgiDdgC4Un0t6UdaoIcUes=";
+  };
+
+  nativeBuildInputs = [ gobject-introspection gtk4 meson ninja pkg-config ];
+
+  buildInputs = [ libadwaita json-glib libxml2 ];
+
+  meta = with lib; {
+    description = "Rich text framework for GTK";
+    homepage = "https://github.com/mjakeman/text-engine";
+    license = with licenses; [ mpl20 lgpl21Plus ];
+    maintainers = with maintainers; [ foo-dogsquared ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index d756f73ba656..b4a518f5a3dc 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7153,6 +7153,8 @@ with pkgs;
      gst-plugins-bad = gst_all_1.gst-plugins-bad.override { enableZbar = true; };
   };
 
+  gnome-extension-manager = callPackage ../applications/misc/gnome-extension-manager { };
+
   gnome-feeds = callPackage ../applications/networking/feedreaders/gnome-feeds {};
 
   gnome-frog = callPackage ../applications/misc/gnome-frog { };
@@ -22328,6 +22330,8 @@ with pkgs;
 
   tet = callPackage ../development/tools/misc/tet { };
 
+  text-engine = callPackage ../development/libraries/text-engine { };
+
   the-foundation = callPackage ../development/libraries/the-foundation { };
 
   theft = callPackage ../development/libraries/theft { };