[GHC DevOps Group] The future of Phabricator

[Manuel Chakravarty]

That all sounds very good to me.

If I understand correctly, the most tricky issue is the combination of 

(a) migrating Trac is not quite sorted yet and might require manual intervention and

(b) it really is much safer/easier to migrate Trac before switching git hosting over to GitLab.

Everything else can be sorted out incrementally. Is that right? 

You are writing that the goal is to accept MRs in a bit more than a months time (which is just in time before Rackspace goes away). Given that handling Trac seems to be the most volatile variable here, 

* what do you think when the migration script will be robust enough?
* how much of the remaining 90% can be done after migration by cleaning up migrated data?

Cheers,
Manuel

> Am 06.11.2018 um 18:05 schrieb Ben Gamari <ben at well-typed.com>:
> 
> Manuel Chakravarty <manuel.chakravarty at tweag.io> writes:
> 
>> Hi Ben,
>> 
>> With my DevOps Group Chair hat on, it seems that GitLab (as proposed
>> by you) provides a suitable road forward (both in technical terms and
>> in terms of being a compromise that most people are reasonably happy
>> with). So, let’s do it!
>> 
> Yes, I agree!
> 
>> Could you please make a list of all the tasks that need to be done and
>> attach approximate effort/timelines where possible? (Maybe as a wiki
>> page?)
>> 
> Yes, I have started a Wiki page here [1].
> 
> On the whole, I would like to proceed fairly quickly. For one, CI is
> currently unacceptably flaky. Secondly, I would like to be able to
> avoid having to start paying for our Rackspace boxes when support ends
> at the end of the year.
> 
> However, there is then the question of scope. In principle, GitLab can
> supplant three distinct services pretty well:
> 
> a. Phabricator for code review
> b. gitolite, for repository hosting
> c. Trac, for issue tracking and the Wiki
> d. What remains of the Harbormaster CI
> 
> This discussion so far has largely focused on (a). I discuss the
> remaining items in some depth on the wiki page.
> 
> Cheers,
> 
> - Ben
> 
> 
> [1] https://ghc.haskell.org/trac/ghc/wiki/GitLabMigration?action=edit
> [2] https://github.com/gitlabhq/gitlabhq/blob/667c0a909bde1cf71f21d8ec9768e98b1c489030/doc/hooks/custom_hooks.md