Re: [PATCH v2 2/3] midx.c: use `pack-objects --stdin-packs` when repacking

> On Fri, Sep 23, 2022 at 02:23:30PM -0400, Derrick Stolee wrote:
>> Do you know if there is any reason to do this explicitly? Does this
>> change the set of objects in any way (perhaps by not including
>> duplicates that are tracked in those other packs)?
> 
> Yes. The "^" lines become excluded packs from the perspective of the
> follow-on reachability traversal to discover the namehashes. So as soon
> as we hit an object contained in one of the packs marked as excluded,
> we'll halt the traversal along that direction, since we know that we're
> not going to pick up any objects in those packs.
> 
> So you could omit them, and you'd get the same resulting pack, but it
> would take longer to generate since we wouldn't be stopping the
> follow-on traversal as early as possible.