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From Patrick Wendell <>
Subject Re: Scala 2.11 builds broken/ Can the PR build run also 2.11?
Date Fri, 09 Oct 2015 20:34:23 GMT
I would push back slightly. The reason we have the PR builds taking so long
is death by a million small things that we add. Doing a full 2.11 compile
is order minutes... it's a nontrivial increase to the build times.

It doesn't seem that bad to me to go back post-hoc once in a while and fix
2.11 bugs when they come up. It's on the order of once or twice per release
and the typesafe guys keep a close eye on it (thanks!). Compare that to
literally thousands of PR runs and a few minutes every time, IMO it's not
worth it.

On Fri, Oct 9, 2015 at 3:31 PM, Hari Shreedharan <>

> +1, much better than having a new PR each time to fix something for
> scala-2.11 every time a patch breaks it.
> Thanks,
> Hari Shreedharan
> On Oct 9, 2015, at 11:47 AM, Michael Armbrust <>
> wrote:
> How about just fixing the warning? I get it; it doesn't stop this from
>> happening again, but still seems less drastic than tossing out the
>> whole mechanism.
> +1
> It also does not seem that expensive to test only compilation for Scala
> 2.11 on PR builds.

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