[yt-dev] Final github repo

[Nathan Goldbaum]

Hi all,

I think the github mirror we set up for testing purposes has been more or
less a success:

https://github.com/yt-project/yt-test

The mirroring seems to work well: the github repository is staying in sync
with the bitbucket repo every time we merge pull requests on bitbucket. To
make further work on transitioning to github easier, I'd like to settle on
what the final converted repo should like.

For the purposes of discussion, I'd like to propose simply renaming the
yt-project/yt-test repo to be yt-project/yt and agreeing that the current
conversion is satisfactory. This means we'll agree not to use an alternate
conversion technique that will change git commit hashes.

Our mirror bot uses hg-git, and the converted repo hg-git produces isn't
necessarily perfect. In particular, two issues have come up:

* Since git is more selective than mercurial about e-mail and username
formatting, there are a number of commits associated with dummy e-mail
addresses like none at none

* Since we do most of our development on a branch named "yt" (not "default"
as is typical of mercurial repos) almost every commit in our history has a
comment in the git commit message recording that it hapenned on the "yt" or
"stable" branch. This makes it possible to round-trip from hg to git and
back to hg, but it's also some extra noise in every single commit message.

We could in principle ameliorate these issues by using something besides
hg-git to do the conversion or by modifying hg-git to avoid these issues.
The former options will lose the nice property of being able to round-trip
and for others to independently export work from their forks. The latter
option will require us to modify hg-git and waiting for upstream hg-git to
review our changes, which might take a while, or telling everyone to use a
hacked version of hg-git.

Personally, I don't think either of those options are worth the hassle for
what to me are minor annoyances. I think I've also ameliorated the
username/e-mail ambiguity in the converted history by adding a .mailmap
file to the repo:

https://bitbucket.org/yt_analysis/yt/pull-requests/2582

In addition, the mirroring process we have now seems to work well, so just
renaming the yt-test repo and calling the conversion final avoids a bunch
more work which will block further progress on the conversion.

What do you all think? It would be great to get people's +/-1 on renaming
yt-test to yt on github.com/yt-project.

Once we have a final repo name we will be able to start porting tooling
like the website generator without worrying about the name or content of
the final repo changing.

-Nathan
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