MELPA and rewriting history for the (git) repo

MELPA and rewriting history for the (git) repo

[Uwe Brauer]

Hi

Matlab-emacs has moved to a git repo at SF and MELPA points now to that
repo.


The question is this: git allows to rewrite history but usually
for a public repo, it is strong advised in the documentation, not to do
so.

What would happen with the corresponding MELPA packages, if one rewrote
the history?

Thanks

Uwe Brauer 

Re: MELPA and rewriting history for the (git) repo

[Phillip Lord]

For MELPA, I don't think it would make any difference -- I think, it
just looks for changes in the hash and if it sees one generates the
latest version. It might cause a problem if it uses git update, rather
than a fresh clone for each checkout.

There are many good reasons not to rebase master, though.


Uwe Brauer <oub@mat.ucm.es> writes:
> Matlab-emacs has moved to a git repo at SF and MELPA points now to that
> repo.
>
>
> The question is this: git allows to rewrite history but usually
> for a public repo, it is strong advised in the documentation, not to do
> so.
>
> What would happen with the corresponding MELPA packages, if one rewrote
> the history?
>
> Thanks
>
> Uwe Brauer 

Re: MELPA and rewriting history for the (git) repo

[Alex Dunn]

It does a fetch and then a hard reset, so there shouldn’t be problems
with history being rewritten: https://github.com/melpa/melpa/blob/master/package-build.el#L551-L561

There could be problems for MELPA Stable if the new history has tags
that are parsed as an earlier version; that currently requires manual
intervention (https://github.com/melpa/melpa/pull/3362#issuecomment-173058525).

Phillip Lord <phillip.lord@russet.org.uk> writes:

> For MELPA, I don't think it would make any difference -- I think, it
> just looks for changes in the hash and if it sees one generates the
> latest version. It might cause a problem if it uses git update, rather
> than a fresh clone for each checkout.
>
> There are many good reasons not to rebase master, though.
>
>
> Uwe Brauer <oub@mat.ucm.es> writes:
>> Matlab-emacs has moved to a git repo at SF and MELPA points now to that
>> repo.
>>
>>
>> The question is this: git allows to rewrite history but usually
>> for a public repo, it is strong advised in the documentation, not to do
>> so.
>>
>> What would happen with the corresponding MELPA packages, if one rewrote
>> the history?
>>
>> Thanks
>>
>> Uwe Brauer