Re: [eigen] Bitbucket is dropping its Mercurial support!

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Hi!

I just checked with the tuxfamily-people. They do provide mercurial hosting, but they don't support anything similar to pull-requests (at least as of now). So at the moment this would not really be an option as it would require to solely work with submitting patches for contributions from non-members.

For non-regular contributers the easiest solution would therefore likely be to switch to github or gitlab.

Cheers,
Christoph


PS: Still happy to hear more responses. I always assumed that we had more than 3 users ;)


On 21/08/2019 16.33, Edward Lam wrote:
I find it odd that Eigen's repo isn't hosted on tuxfamily.org itself given that https://www.mercurial-scm.org/wiki/MercurialHosting lists it as one of the free providers.

-Edward

On 8/21/2019 9:53 AM, Christoph Hertzberg wrote:
Hello Eigen users and contributers!

As some may have noticed, bitbucket/atlassian is "sunsetting" its mercurial support:

https://bitbucket.org/blog/sunsetting-mercurial-support-in-bitbucket

If they stick to their timeline, we will have to migrate until June 1st, 2020. That means we still have time, but if we do nothing, things will break ...


Converting the repository itself to git should not be a bigger issue -- and if we do this we could as well migrate to a more mainstream provider (i.e., github).

I think the main problems for migration are:
  a) Migrating open pull-requests (for historical reasons, the closed/merged ones should probably be archived as well)   b) Fixing internal links inside commit messages ("grafted from ...", "fixes error introduced in commit ...")   c) Fixing external links to the repository. Most notably, any links from our bugtracker will eventually fail (even if we stayed with bitbucket, the hashes won't match). I doubt that we could set up any automatic forwarding for that.   d) Any third-party which relies on our main repository will need to change as well (not directly "our" problem, but we need to give a reasonable amount of time for everyone to migrate to whatever will be our future official repository).

Smaller issues (relatively easy to fix or not as important):
  e) Change links from our wiki (to downloads)
  f) Change URLs for automated doxygen generation and for unit-tests
  g) Automatic links from the repository to our bugtracker (currently "Bug X" automatically links to http://eigen.tuxfamily.org/bz/show_bug.cgi?id=X)
  h) Change hashes in bench/perf_monitoring/changesets.txt

I probably missed a few things ...


I see essentially three options:
  1. Migrate to another mercurial provider
  2. Convert to git, stay at bitbucket
  3. Convert to git, migrate to another provider

Honestly, I see no good reason for option 2. And the only real reason I see for option 1 would be that it safes a lot of hassle with b) and h) -- also perhaps it would simplify c) (e.g., we could easily crawl through our bugzilla-database and just replace some URLs).


Any opinions on this? Preferences for how to proceed, or other alternatives? Does anyone have experience with migrating from hg to git? Or migrating between providers? Especially, also dealing with the issues listed above.
Does anyone see issues I forgot?


Cheers,
Christoph








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