How can you end up with a discrepancy between branchmap and heads?

[Pierre-Yves David]

Just to quick reply to point that some extension tweak these commands.

For example, topic hide draft changeset with topic to client without 
topic (but still allow a pull with an explicit hash). Topic is probably 
not involved here because these changeset are public, but that's an 
exemple of things that might happens.

I am just back from two week of pto, and I won't have time to have a 
deeper look to this right now, but please ping me again next week if I 
forgot to get back to you by then.

On 5/4/24 23:10, Mike Hommey wrote:
> Hi,
>
> I'm trying to reproduce a peculiarity of the (former) pypy mercurial
> repository (https://foss.heptapod.net/pypy/pypy) but I can't manage to
> reproduce locally, even if I stream-clone the original repository (with
> hg --config experimental.evolution=true clone --stream $url).
>
> So, what's peculiar about the repository is that the following changesets
> aren't listed in its heads (https://foss.heptapod.net/pypy/pypy?cmd=heads):
>    96b962f458200a4757ea4a5ddf00b0ef73f267a5
>    dd73cf12b2d2d1b0c8420fe5d64b3a372db20a29
>    9787f52124b1bf6086b1286bb16fcbd2cca4ed80
>    d5ab4175e409e094208483118daa5a7bffd37141
>    2eb83a0fb3e9c1b5712aea9d767c3a775b3aaf85
>
> but they appear in the branchmap
> (https://foss.heptapod.net/pypy/pypy?cmd=branchmap).
>
> If you clone the repository, you don't end up with them locally, but if you
> hg pull -r $sha1, you can get them.
>
> So far, I've ruled out obsolescence markers and phases being a possible
> source. I'm trying to generate a minimal reproducer to write a testcase
> for git-cinnabar. I guess, worst case scenario, I could change the listed
> heads via an extension? But I'm also curious what's up with the original
> repository. Bad cache?
>
> I know of other cases where that can happen, namely, when the head of a
> named branch is merged into another branch and is thus not a topological
> head. But that's not the case here.
>
> Mike
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-- 
Pierre-Yves David
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