.arcconfig

rust-hg-path: add method to get part of a path relative to a prefix

This will be used in the next patch in this series.

Differential Revision: https://phab.mercurial-scm.org/D7526

{
    "conduit_uri": "https://phab.mercurial-scm.org/api",
    "repository.callsign": "HG",
    "arc.land.onto.default": "@",
    "base": "hg:.^"
}