ubuntu/macbook 2015 - stop waking up upon suspend fix, as systemd unit

nowake.service

# ubuntu 17.04 / macbook pro retina 2015 13
#
# place in /etc/systemd/system
# systemctl daemon-reload
# systemctl enable nowake.service
# systemctl start nowake.service
# 
# verify with `cat /proc/acpi/wakeup`
# XHC1 should be disabled
# disable more as needed
# keep LID0 enabled

[Unit]
Description=stop waking up after sleep macbook 2015

[Service]
ExecStart=/bin/bash -c "echo XHC1 > /proc/acpi/wakeup"

[Install]
WantedBy=multi-user.target