pub const OLDEST_READABLE_VERSION: u32 = 2;Expand description
The oldest document version this build reads.
Every version from here to STATE_VERSION is read and carried forward on the
way in, which is how onevcs’s own registry document treats its older
versions: what separates a readable older version from a refused one is whether
its every field still means here what it meant there. 2 to 3 added a field
and changed none, so a version 2 document reads as one whose change requests
were opened with no body — which is what they were; 3 to 4 added two the same
way, so a version 3 document reads as one whose preserved rows say nothing about a
hold or a line count, which is what they said. 4 to 5 added one that every row
answers rather than one that appears when it holds something, so a version 4
document’s rows are carried forward as the answer that list was: preserved work
nobody published, which is work that did not land. 5 to 6 added two that
appear only when they hold something, so a version 5 document’s checks read as
checks whose commit and address that build never recorded — which is what they
were, and the one thing that must not be filled in from the change request’s own
head. 6 to 7 added two more of that kind, so a version 6 document reads as one
whose change requests were opened before this crate could draft one — which is what
they were: no draft reason recorded for any of them, and no lift ever asked for.
1 is refused rather than read for the opposite reason: it describes a provider
that could not publish, and every session in it would read back as open — a
wrong answer where a journey asserting on a session it had closed needs a
refusal.