We have few repos already storing our projects.
When starting to use Phab (great platform BTW) we setup existing HG repos.
But found that hgrc always is overwritten with Phab specific - only two hooks and else info like owner, mail, extension, global settings are ignored.
How can we avoid that ?
Custom configurations per repository are not supported yet. See T6118: Support for Mercurial extensions in hosted repositories. You should be able to configure global settings in /etc/mercurial/.