patch 8.2.3418: garbage collection while evaluating may cause trouble Commit: https://github.com/vim/vim/commit/070ac3433b0ebefd6dc6cd49707fcfa1421b9e67 Author: Christian Brabandt <cb@256bit.org> Date: Thu Sep 9 12:12:03 2021 +0200 patch 8.2.3418: garbage collection while evaluating may cause trouble Problem: Garbage collection while evaluating may cause trouble. Solution: Disable garbage collection while evaluating an expression. (Christian Brabandt, issue #8848)

#!/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