view .arcconfig @ 39176:fec01c69b0f0

setdiscovery: use revset for resolving DAG heads in a subset

This was the final use of dagutil in setdiscovery!

For reasons I didn't investigate, feeding a set with nullrev
into the heads() revset resulted in a bunch of tests failing.
Filtering out nullrev from the input set fixes things.

Differential Revision: https://phab.mercurial-scm.org/D4324

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