https://secure.phabricator.com/book/phabricator/article/arcanist/
Some Arcanist commands can be configured. This configuration is read from three sources, in order:
- A project can specify configuration in an .arcconfig file. This file is JSON, and can be updated using arc set-config --local or by editing it manually.
- User configuration is read from /.arcconfig. This file is JSON, and can be updated using arc set-config.
- Host configuration is read from /etc/arcconfig
in your case --local