Mesa extentsion: adjust KDE related troubles with packages downgrade

- one is actually general fix - recommened installation of library before installing rockchip-multimedia
- second is holding package before running upgrade as it wants to pull older library from kde repositories
- remove KDE Neon base files upgrade pin

extensions/mesa-vpu.sh

@@ -140,20 +140,26 @@ function post_install_kernel_debs__3d() {
  EOF
  fi
 
+ display_alert "Updating sources list, after kisak PPAs" "${EXTENSION}" "info"
+ do_with_retries 3 chroot_sdcard_apt_get_update
+
  # KDE neon downgrades base-files for some reason. This prevents tacking it
  do_with_retries 3 chroot_sdcard apt-mark hold base-files
 
- display_alert "Updating sources list, after kisak PPAs" "${EXTENSION}" "info"
- do_with_retries 3 chroot_sdcard_apt_get_update
+ # This library must be installed before rockchip-multimedia
+ do_with_retries 3 chroot_sdcard_apt_get_install libv4l-0
 
  display_alert "Installing 3D extension packages" "${EXTENSION}" "info"
- do_with_retries 3 chroot_sdcard_apt_get_install --allow-downgrades "${pkgs[@]}"
+ do_with_retries 3 chroot_sdcard_apt_get_install "${pkgs[@]}"
+
+ # This library gets downgraded
+ do_with_retries 3 chroot_sdcard apt-mark hold libdav1d7
 
  display_alert "Upgrading Mesa packages" "${EXTENSION}" "info"
  do_with_retries 3 chroot_sdcard_apt_get dist-upgrade
 
  # KDE neon downgrade hack undo
- do_with_retries 3 chroot_sdcard apt-mark unhold base-files
+ do_with_retries 3 chroot_sdcard apt-mark unhold base-files libdav1d7
 
  # Disable wayland flag for XFCE
  #if [[ "${DESKTOP_ENVIRONMENT}" == "xfce" ]]; then

packages/bsp/common/usr/lib/armbian/armbian-firstrun

@@ -105,6 +105,9 @@ case "$1" in
  [[ "${LINUXFAMILY}" == meson64 ]] && set_fixed_mac
  [[ "${BOARD}" == nanopi-r6* ]] && set_fixed_mac
 
+ # Remove KDE Neon base files upgrade pin
+ [[ -f /etc/apt/preferences.d/99-neon-base-files ]] && rm -f /etc/apt/preferences.d/99-neon-base-files
+
  systemctl disable armbian-firstrun
  exit 0
  ;;