Handle differences between EL8 and EL9

roles/el/tasks/packages-gui.yml

@@ -23,3 +23,24 @@
       - git-gui
       - liberation-fonts
       - vim-X11
+- name: Install Gnome packages (EL 8)
+  become: true
+  ansible.builtin.dnf:
+    name: '{{ packages }}'
+    state: present
+  vars:
+    packages:
+      - gnome-shell-extension-dash-to-dock
+      - gnome-tweaks
+  when: gnome_shell.stat.exists and ansible_distribution_major_version == 8
+- name: Install Gnome packages (EL 9)
+  become: true
+  ansible.builtin.dnf:
+    name: '{{ packages }}'
+    state: present
+  vars:
+    packages:
+      - gnome-extensions-app
+      - gnome-shell-extension-dash-to-dock
+      - gnome-tweaks
+  when: gnome_shell.stat.exists and ansible_distribution_major_version == 9