buildstep.PushBlob uploads by digest unless the store holds it, waits out a store
refusing connections as mesh-build-image does, and names the store's own words;
BlobReference is the form the key and the controller check.
buildstep.Isolation and Isolated: its own namespaces with only a loopback, an
environment of exactly what the step is given, the system and toolchain read-only,
the workspace writable, and no home, key, bus login, runtime directory or name service.
buildstep.FetchRequest is what the builder writes and the build modules read: the
repository, commit, ref, base and, for a module naming its paths, its directory and
those paths from the indexer's kept inputs.
ModuleTrees reads each named path's object with one git ls-tree and answers their
named tree, so the preview gives the value the indexer gives; a named path absent at
the commit fails by name rather than pinning a source that does not exist.
Forge.Paths, PreviewModule.Paths, KeptInputs2.Paths and buildstep.ModuleTree.Paths,
each optional and read as absent by older readers; a kept or previewed tree that its
named paths do not compute to is refused, so a recompute gives the merge's value.
mesh/repo-check head 78364e318bdc merged into trunk 07a65927c362 — pass: its merge-check.sh passed, each part in its toolchain: merge-check.sh (typescript)…
mesh/merge-gate head 78364e318bdc merged into trunk 07a65927c362 — fail: group feat/the-checker composed: 1 problem(s) the change brings; the first: mesh-d…