Proposal: accept pull requests on GitHub

Matthias Fischmann mf at
Mon Nov 2 06:13:54 UTC 2015

I would like to add that even though I'm also skeptical about and
intimidated by phabricator by all the reason already discussed, I am
very happy with documentation on the wiki.  Submitting my first patch
didn't feel any harder to me than doing a github pull request.

Just to let you know not everybody out there is unhappy with phab.  (-:


On Sun, Nov 01, 2015 at 06:11:23PM -0800, Simon Marlow wrote:
> Date: Sun, 1 Nov 2015 18:11:23 -0800
> From: Simon Marlow <marlowsd at>
> To: Nikita Karetnikov <nikita at>, Niklas Hambüchen
>  <mail at>
> Cc: "ghc-devs at" <ghc-devs at>
> Subject: Re: Proposal: accept pull requests on GitHub
> On 28/10/2015 14:30, Nikita Karetnikov wrote:
> >>I would recommend against moving code reviews to Github.
> >>I like it and use it all the time for my own projects, but for a large
> >>project like GHC, its code reviews are too basic (comments get lost in
> >>multi-round reviews), and its customisation an process enforcement is
> >>too weak; but that has all been mentioned already on the
> >> page you linked.
> >
> >At least you're able to submit comments!  I just had my second
> >interaction with arc/phab and I have to say that I really hate both now.
> >The former is not flexible enough and lacks documentation, the latter is
> >just plain confusing.
> >
> >I was trying to update an existing phab diff (D1334), but I had no idea
> >what would be submitted, and I'm still not sure whether I did that okay
> >or not.  Oh, slyfox tells me that I overwrote my previous changes, nice!
> >In the process, I also created a new revision by mistake.  The web UI
> >didn't help either since there's so much stuff: diffs, revisions, ids.
> >Is it okay to have multiple diffs in a single phab differential after
> >updating?  No idea.
> >
> >After that I was struggling to reply to rwbarton.  I hit "Done" and
> >added my comment, but both things were marked as "Unsubmitted" (or
> >something).  After a while I decided to click on the button at the
> >bottom of the page.  Looks like it did the trick, but I have no idea
> >whether it's the right way or not.
> >
> >Not that I'm saying that GitHub is perfect, but at least it works
> >instead of messing up with the work I carefully tested.
> My guess is that the problems here were mostly because you were unfamiliar
> with the workflow.  Did you look at the wiki page?
> At a high level it works like this:
>  - create a diff (arc diff)
>  - update it (arc diff), possibly multiple times
>  - land it (arc land)
> each time you update it, Phabricator creates a new "revision", attached to
> the same diff, and you can look at the differences between an arbitrary pair
> of revisions in the UI.  So at any point we can see the whole diff, or just
> what you changed in the latest revision.
> As Edward mentioned, in Phabricator you make multiple comments and then
> submit them all together (which sends a single email to the reviewers).  To
> get to the submit button quickly, hit 'z'.
> Cheers
> Simon
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