diff --git a/gnome/gnome-extensions.sh b/gnome/gnome-extensions.sh
index 1810d5c..337af76 100755
--- a/gnome/gnome-extensions.sh
+++ b/gnome/gnome-extensions.sh
@@ -3,16 +3,9 @@
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 source "$SCRIPT_DIR/../utils.sh"
 
-PYTHON="$(which python3)"
-
 install_packages python-pipx gnome-shell-extensions
 
-# Install or reinstall gext if missing or broken
-if ! ~/.local/bin/gext --version &> /dev/null; then
-  echo "gext missing or broken, reinstalling..."
-  pipx uninstall gnome-extensions-cli 2>/dev/null || true
-  pipx install --python "$PYTHON" gnome-extensions-cli --system-site-packages
-fi
+ensure_gext
 
 EXTENSIONS=(
   "tilingshell@ferrarodomenico.com"
diff --git a/migrations/1792598033.sh b/migrations/1792598033.sh
index ee05896..e1c3725 100644
--- a/migrations/1792598033.sh
+++ b/migrations/1792598033.sh
@@ -1,8 +1,12 @@
 #!/bin/bash
 
 # Install the Tailscale GNOME extension
+source "$HOME/.local/share/coredesktop/utils.sh"
+
 ext="tailscale-gnome@diskmth.fr"
+ensure_gext || exit 1
 if ! ~/.local/bin/gext list | grep -q "$ext"; then
-  ~/.local/bin/gext --filesystem install "$ext"
-  ~/.local/bin/gext --filesystem enable "$ext"
+  ~/.local/bin/gext --filesystem install "$ext" || exit 1
 fi
+# Enable even if it was already installed, in case an earlier run stopped short
+~/.local/bin/gext --filesystem enable "$ext"
diff --git a/updates.d/80-gnome-extensions.sh b/updates.d/80-gnome-extensions.sh
index efc6b99..b270fe3 100755
--- a/updates.d/80-gnome-extensions.sh
+++ b/updates.d/80-gnome-extensions.sh
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+source "$HOME/.local/share/coredesktop/utils.sh"
+
 is_installed() {
   command -v gnome-shell &>/dev/null
 }
@@ -7,12 +9,7 @@ is_installed() {
 run_update() {
   echo "Updating GNOME extensions..."
 
-  # Reinstall gext if missing or broken (e.g. its pipx venv went stale after a Python upgrade)
-  if ! ~/.local/bin/gext --version &> /dev/null; then
-    echo "gext missing or broken, reinstalling..."
-    pipx uninstall gnome-extensions-cli 2>/dev/null || true
-    pipx install --python "$(which python3)" gnome-extensions-cli --system-site-packages
-  fi
+  ensure_gext || return 1
 
   # Update every enabled user extension to the latest version for this GNOME Shell.
   # The filesystem backend writes directly to ~/.local/share/gnome-shell/extensions;
diff --git a/utils.sh b/utils.sh
index cbcb5a4..a834a66 100755
--- a/utils.sh
+++ b/utils.sh
@@ -41,6 +41,15 @@ install_pipx_apps() {
   return $status
 }
 
+# Reinstall gext if missing or broken. Its pipx venv goes stale when Arch
+# upgrades Python, and migrations run before updates.d/60-pipx.sh rebuilds it.
+ensure_gext() {
+  ~/.local/bin/gext --version &> /dev/null && return 0
+  echo "gext missing or broken, reinstalling..."
+  pipx uninstall gnome-extensions-cli &> /dev/null || true
+  pipx install --python "$(which python3)" gnome-extensions-cli --system-site-packages
+}
+
 # Function to remove pacman/AUR packages if installed
 remove_packages() {
   local packages=("$@")