patch 8.2.3922: cannot build with dynamic Ruby 3.1 Commit: https://github.com/vim/vim/commit/8bb3fe4d4dcd27c02e903f6772fdc8fe2e9eba70 Author: ichizok <gclient.gaap@gmail.com> Date: Tue Dec 28 15:51:45 2021 +0000 patch 8.2.3922: cannot build with dynamic Ruby 3.1 Problem: Cannot build with dynamic Ruby 3.1. Solution: Add "_EXTRA" variables for CI. Add missing functions. (Ozaki Kiichi, closes #9420)

#!/bin/bash
set -e

apt-get install -y xvfb

cat <<EOT >/etc/systemd/system/xvfb.service
[Unit]
Description=X Virtual Frame Buffer Service
After=network.target
[Service]
ExecStart=/usr/bin/Xvfb :99 -screen 0 1024x768x24
[Install]
WantedBy=multi-user.target
EOT

systemctl enable xvfb.service
systemctl start xvfb.service