view .arcconfig @ 42281:4274b1369b75

automation: add check that hg source directory is a repo

Synchronizing from e.g. source distributions is not yet supported.
Let's add a check so we fail with an error message indicating
such.

Differential Revision: https://phab.mercurial-scm.org/D6315

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