.arcconfig

rust-hg-path: implement `Display` for `HgPath` and `HgPathBuf`

This is useful when debugging, to get a human readable output instead of an
array of `u8`.

Differential Revision: https://phab.mercurial-scm.org/D7523

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