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Subject: Re: [boost] Git Modularization Review no vote heads-up
From: Vladimir Prus (ghost_at_[hidden])
Date: 2013-05-30 01:44:00

On 26.05.2013 17:15, Jürgen Hunold wrote:

> I even fear that building historic boost is from git is not even possible. The
> source tree rewriting needed for the modularisation itself is quite heavy.
> This is the main reason why Dave proposed dropping the history altogether at
> the first conversion attempt I think. The only "real" reason (at least for me)
> for keeping history is the ability to use "git diff" and "git blame" and follow
> edits and reading commit messages.
> Those are my personal opinions, but I guees Rene and Volodya are on the same
> track here.

Yep. I primarily care that in the new git repository, I can go "git blame" and "git log"
and "git show" without hassle.

I *suspect* that "git mv" after conversion won't be quite as smooth, e.g. if I print a
previous commit it will have "v2/" prefix in all paths, which will slightly complicate
things. And practically speaking, the history is only important from the point where
jam moved into build/v2/engine.

Top-level scripts should not be a problem; we can code them to detect which layout is used (well,
I can do that), and I don't think that building previous Boost releases from git repository
is a use case were need to support -- even the structure of the checkout will be different,
so checking out from git, rearranging, and then building is not 100% reproduction of past builds
anyway. I.e. we probably need not bother with rewriting history of top-level scripts.

So where are we now? Daniel previously said:

        - Send tools/build/v2/* to the top level of the build repository.
        - Send the rest of tools/build to historic/build in the build repo.
        - Send tools/jam to historic/jam in the build repo.

and it looks like it was actually done? I don't know whether 'historic' is a branch
or directory name, but it does not matter much. However, it looks like further tweak
was made to disable this?


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