Largely inspired by https://lwn.net/Articles/584175/
"They must be suitable for every distribution to use."
Packagers must define:
- ExecStart=/path/to/bip_env.sh
- Environment=BIP_DEFAULT_CONFIG='/path/to/default/bip'
using a unit file drop-in bip-config.service.d/<distrib>.conf
Pierre-Louis Bonicoli
