Re: [boost] git reset and force push

Subject: Re: [boost] git reset and force push
From: Stephen Kelly (hello_at_[hidden])
Date: 2015-10-07 16:56:38

Raffi Enficiaud wrote:

> The problems created by history rewrite are human-to-human, not
> human-to-robot:

This is not true.

Today the boost supermodule points to a particular sha of the submodule you 
want to rewrite the history of.

If you rewrite the history of the submodule, the commit referenced by the 
sha will be garbage collected and no one in the future will be able to make 
a checkout of the boost supermodule as it is today. You affect usefulness of 
the supermodule by rewriting history of a submodule. Just don't do it.

You could push a branch with the current state of develop to a branch named 
develop-in-early-October-2015 which would prevent the shas referenced by the 
supermodule being garbage collected. How many times do you want to push 
branches with names like that? How do you defend against a zealous 
maintainer 'cleaning up useless branches' and breaking the supermodule 
history?

Thanks,

Steve.