.arcconfig

py3: use bytes() to byte-stringify url object in url.py

Perhaps we'll have to convert it back and forth from/to bytes and unicode
at urllib boundary, but at least util.hidepassword() wants a byte string.

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