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From Lin Yuan <apefor...@gmail.com>
Subject Re: [DISCUSS] Build OSX builds in CI (possibly with TravisCI).
Date Wed, 19 Sep 2018 02:56:09 GMT
Bravo! This is a very important piece in CI. Thanks Kellen and Marco to
implement it quickly.


Lin

On Tue, Sep 18, 2018, 4:18 PM Marco de Abreu
<marco.g.abreu@googlemail.com.invalid> wrote:

> Kellen has fixed the one bug in our build system and thus, there are no
> outstanding tests :)
>
> Exactly, it will run on branch and PR validation.
>
> Best regards,
> Marco
>
> sandeep krishnamurthy <sandeep.krishna98@gmail.com> schrieb am Di., 18.
> Sep. 2018, 19:32:
>
> > This is awesome. Thanks a lot Kellen and Marco. With this work complete,
> we
> > will have MXNet Python tests running for Mac on Travis CI, for PR and
> > Branch builds?
> > Thank you for working on fixing the tests and making it run as part of
> > Travis CI for Mac platform. Is there any Github issue or Jira where we
> can
> > see disabled / tests that needs to be fixed for Mac? This might be useful
> > if we can call for contributions.
> >
> > Best,
> > Sandeep
> >
> >
> > On Tue, Sep 18, 2018 at 9:51 AM Marco de Abreu
> > <marco.g.abreu@googlemail.com.invalid> wrote:
> >
> > > Hey everyone,
> > >
> > > we are about to enable Python tests for Mac. The outstanding bugs have
> > been
> > > fixed by Kellen and we're just waiting for the PRs to pass. We'll send
> a
> > > separate email as soon as they are enabled.
> > >
> > > Additionally, we had a small problem that Travis runs got aborted if
> > > multiple commits were done in a short timeframe. While this is
> acceptable
> > > for PRs, this causes our branch jobs to also fail. An examples is
> > available
> > > at [1]. In order to cope with this, I have asked Apache Infra to
> disable
> > > cancellation of concurrent jobs. They agreed to this, but reminded us
> > that
> > > they might turn it back on if we consume too many resources.
> > >
> > > The dashboard to review the Travis resource utilization is available at
> > > [2]. Just log in as Guest.
> > >
> > > Best regards,
> > > Marco
> > >
> > > [1]:
> > >
> > >
> >
> https://travis-ci.org/apache/incubator-mxnet/builds/430135867?utm_source=github_status&utm_medium=notification
> > > [2]:
> > >
> > >
> >
> https://demo.kibble.apache.org/dashboard.html?page=ci&source=e0ce4eee89a77ec231eee1fdbbc647cb3de2f6ecfc3cef8d8c11dc2d&interval=hour
> > >
> > >
> > > On Thu, Sep 13, 2018 at 1:06 AM kellen sunderland <
> > > kellen.sunderland@gmail.com> wrote:
> > >
> > > > We've got fairly limited ability to change what's reported by Travis.
> > > Most
> > > > administration is done by the ASF Infra crew, so it's tough for us to
> > > > experiment with settings.  It'd be great if you could bear with us
> for
> > a
> > > > few days.  It shouldn't take too long to either (1) get happy-feeling
> > > green
> > > > checks back, or (2) decide we don't care as much as we thought we did
> > > about
> > > > MacOS support.
> > > >
> > > > On Wed, Sep 12, 2018 at 9:53 PM Aaron Markham <
> > aaron.s.markham@gmail.com
> > > >
> > > > wrote:
> > > >
> > > > > Is there any way to make it not show a red X failure in the GitHub
> UI
> > > > when
> > > > > TravisCI fails? I keep going back to check what flakey test failed
> > this
> > > > > time and realizing that Jenkins is still running and it was the
> "not
> > > > > required" Travis fail. The green checkmark makes me happy and it's
> > > easier
> > > > > to keep an eye on what's going on. If Travis times out a lot of the
> > > time,
> > > > > then most of our PRs will look red/bad/sad when they're not.
> > > > >
> > > > > What about no failure flag set, but add a label that Travis
> > failed....
> > > or
> > > > > if we can't control the flag, auto-set labels for each Travis and
> > > Jenkins
> > > > > pass/fail so we still get the benefit of at-a-glance status checks.
> > > > >
> > > > > On Wed, Sep 12, 2018 at 6:04 AM Marco de Abreu
> > > > > <marco.g.abreu@googlemail.com.invalid> wrote:
> > > > >
> > > > > > Hello,
> > > > > >
> > > > > > Travis CI has successfully been enabled just now. This means you
> > will
> > > > now
> > > > > > see a new status under your PR which is called
> > > > > > "continuous-integration/travis-ci/pr".
> > > > > >
> > > > > > The job only compiles MXNet on Mac and currently does not run
> unit
> > > > tests
> > > > > -
> > > > > > we expect the overall execution duration to be around 6 minutes
> and
> > > > thus
> > > > > > faster than the full Jenkins pipeline. The status is set to "not
> > > > > required"
> > > > > > which means that it does not block merging if that job fails
> since
> > > the
> > > > > > pipeline is still in beta. But in general, it would be good if
> > > > committers
> > > > > > review the results in case the job shows a failure. Our last
> known
> > > > state
> > > > > is
> > > > > > that the pipeline works properly, but we will keep everybody up
> to
> > > date
> > > > > in
> > > > > > case we get aware of any problems.
> > > > > >
> > > > > > The next step will be integration of Python CPU unit tests. There
> > > will
> > > > > be a
> > > > > > separate email if we got an update on that manner.
> > > > > >
> > > > > > Special thanks to Kellen Sunderland for the contribution of this
> > > Travis
> > > > > CI
> > > > > > pipeline.
> > > > > >
> > > > > > Best regards,
> > > > > > Marco
> > > > > >
> > > > > > On Wed, Sep 5, 2018 at 8:19 PM Tianqi Chen <
> > tqchen@cs.washington.edu
> > > >
> > > > > > wrote:
> > > > > >
> > > > > > > Alrite, then I think it is fine as long as we can kept up with
> > > build
> > > > > > speed
> > > > > > > without timeout.
> > > > > > >
> > > > > > >
> > > > > > > Tianqi
> > > > > > >
> > > > > > > On Wed, Sep 5, 2018 at 9:14 AM kellen sunderland <
> > > > > > > kellen.sunderland@gmail.com> wrote:
> > > > > > >
> > > > > > > > Travis actually has explicit support for ccache, it's a
> > platform
> > > > > > feature.
> > > > > > > > I've run it and it seems to work quite well.  See for example
> > > this
> > > > > > build:
> > > > > > > >
> > > > > >
> > > >
> > https://travis-ci.org/KellenSunderland/incubator-mxnet/builds/424768656
> > > > > > > >
> > > > > > > > On Wed, Sep 5, 2018 at 7:10 PM Tianqi Chen <
> > > > tqchen@cs.washington.edu
> > > > > >
> > > > > > > > wrote:
> > > > > > > >
> > > > > > > > > Travis it self is stateless, which means ccache is not
> likely
> > > > going
> > > > > > to
> > > > > > > > > work. As far as I understand, if jenkins master is in the
> > > public
> > > > > > > domain,
> > > > > > > > > you do not need to setup a vpn to the subset of the master.
> > > > > > > > >
> > > > > > > > > As for versions of MacOS, we are likely going to be fine
> with
> > > one
> > > > > > > > version,
> > > > > > > > > as usually the problems exhibits on mac are similar
> > > > > > > > >
> > > > > > > > > Tianqi
> > > > > > > > > On Wed, Sep 5, 2018 at 9:04 AM kellen sunderland <
> > > > > > > > > kellen.sunderland@gmail.com> wrote:
> > > > > > > > >
> > > > > > > > > > @Tianqi: Yeah there's going to be a lot of trade-offs to
> > > using
> > > > > > > > Travis.  I
> > > > > > > > > > hope we can get it running fast enough with ccache that
> it
> > > > won't
> > > > > > > > timeout
> > > > > > > > > > when running tests, but even that is questionable.  In my
> > > > private
> > > > > > > > testing
> > > > > > > > > > it was running in about 35 minutes and the global timeout
> > for
> > > > > > Travis
> > > > > > > > jobs
> > > > > > > > > > is 45 minutes.  I'd say let's run it for a few builds and
> > see
> > > > how
> > > > > > it
> > > > > > > > > goes.
> > > > > > > > > > It won't be enabled in a mode that blocks PRs any time
> > soon.
> > > > > > > > > >
> > > > > > > > > > I don't think physical hardware is a great solution.  We
> > > would
> > > > > have
> > > > > > > to
> > > > > > > > > > purchase the hardware, then maintain security updates,
> > > install
> > > > > > > > different
> > > > > > > > > > versions of XCode / MacOS, setup a vpn to our jenkins
> > master,
> > > > > > etc.  I
> > > > > > > > > would
> > > > > > > > > > also worry that if the machine goes down for whatever
> > reason
> > > it
> > > > > > would
> > > > > > > > > block
> > > > > > > > > > PRs, and someone would have to be physically present to
> > turn
> > > it
> > > > > > back
> > > > > > > > on.
> > > > > > > > > > Even assuming we set all the hardware up it's still not
> > > > scalable
> > > > > so
> > > > > > > > we'd
> > > > > > > > > > have to over-provision.
> > > > > > > > > >
> > > > > > > > > > I'm hoping the Travis solution works for the time being.
> If
> > > it
> > > > > > > doesn't
> > > > > > > > > > we'll have to take a look at a few other options, but
> I've
> > > > spent
> > > > > a
> > > > > > > fair
> > > > > > > > > > amount of time thinking about this and I don't think
> there
> > > are
> > > > > any
> > > > > > > good
> > > > > > > > > > options that don't have trade-offs.
> > > > > > > > > >
> > > > > > > > > > @Lin: Great!  Thanks for the offer.  There'll be a few
> > > features
> > > > > we
> > > > > > > want
> > > > > > > > > to
> > > > > > > > > > re-enable once the Job gets hooked up again.  I'll ping
> you
> > > > when
> > > > > > it's
> > > > > > > > > ready
> > > > > > > > > > and see if there's anything you think would be
> interesting
> > to
> > > > > help
> > > > > > > > with.
> > > > > > > > > >
> > > > > > > > > > -Kellen
> > > > > > > > > >
> > > > > > > > > > On Wed, Sep 5, 2018 at 6:58 PM Lin Yuan <
> > apeforest@gmail.com
> > > >
> > > > > > wrote:
> > > > > > > > > >
> > > > > > > > > > > Hi Kellen,
> > > > > > > > > > >
> > > > > > > > > > > I would love to contribute. Please let me know if you
> > have
> > > > any
> > > > > > > > > particular
> > > > > > > > > > > work item that I can help.
> > > > > > > > > > >
> > > > > > > > > > > Best,
> > > > > > > > > > >
> > > > > > > > > > > Lin
> > > > > > > > > > >
> > > > > > > > > > > On Wed, Sep 5, 2018 at 9:51 AM Tianqi Chen <
> > > > > > > tqchen@cs.washington.edu
> > > > > > > > >
> > > > > > > > > > > wrote:
> > > > > > > > > > >
> > > > > > > > > > > > is it possible for us to get a MacBook and hook it to
> > the
> > > > > > current
> > > > > > > > > > Jenkins
> > > > > > > > > > > > CI? Travis OSX usually build from scratch and that
> was
> > > > pretty
> > > > > > > slow
> > > > > > > > > > > >
> > > > > > > > > > > > Tianqi
> > > > > > > > > > > >
> > > > > > > > > > > >
> > > > > > > > > > > > On Wed, Sep 5, 2018 at 8:49 AM kellen sunderland <
> > > > > > > > > > > > kellen.sunderland@gmail.com> wrote:
> > > > > > > > > > > >
> > > > > > > > > > > > > Great you feel that way Lin, please feel free to
> > > > contribute
> > > > > > if
> > > > > > > > you
> > > > > > > > > > have
> > > > > > > > > > > > any
> > > > > > > > > > > > > features you'd like tested.  We are using the
> travis
> > > > image
> > > > > > > > xcode9.4
> > > > > > > > > > > which
> > > > > > > > > > > > > is based on MacOS 10.13.
> > > > > > > > > > > > >
> > > > > > > > > > > > > On Wed, Sep 5, 2018 at 6:40 PM Lin Yuan <
> > > > > apeforest@gmail.com
> > > > > > >
> > > > > > > > > wrote:
> > > > > > > > > > > > >
> > > > > > > > > > > > > > Hi Kellen,
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > Many thanks for your and Marco's effort! I think
> > this
> > > > is
> > > > > a
> > > > > > > very
> > > > > > > > > > > crucial
> > > > > > > > > > > > > > piece to improve MXNet stability.
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > To add some data points:
> > > > > > > > > > > > > > 1) Customers using CoreML to MXNet converter were
> > > > blocked
> > > > > > > for a
> > > > > > > > > > while
> > > > > > > > > > > > > > because the converter was broken and no unit test
> > was
> > > > in
> > > > > > > place
> > > > > > > > to
> > > > > > > > > > > > detect
> > > > > > > > > > > > > > that.
> > > > > > > > > > > > > > 2) Developers on Mac cannot verify their local
> > > commits
> > > > > > > because
> > > > > > > > > some
> > > > > > > > > > > > unit
> > > > > > > > > > > > > > tests on master were broken. This wasted much
> time
> > > and
> > > > > > > resource
> > > > > > > > > on
> > > > > > > > > > > > > jenkins
> > > > > > > > > > > > > > server to detect the failure.
> > > > > > > > > > > > > > 3) Please consider running the CI on Mac OS 10.13
> > > since
> > > > > > this
> > > > > > > is
> > > > > > > > > the
> > > > > > > > > > > > > minimum
> > > > > > > > > > > > > > Mac OS version that supports CoreML (to support
> > > CoreML
> > > > to
> > > > > > > MXNet
> > > > > > > > > > > > > converter)
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > Best Regards,
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > Lin
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > On Wed, Sep 5, 2018, 3:02 AM kellen sunderland <
> > > > > > > > > > > > > > kellen.sunderland@gmail.com>
> > > > > > > > > > > > > > wrote:
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > > I'm bumping this thread as we've recently had
> our
> > > > first
> > > > > > > > serious
> > > > > > > > > > bug
> > > > > > > > > > > > on
> > > > > > > > > > > > > > > MacOS that would have been caught by enabling
> > > Travis.
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > I'm going to do a little experimental work
> > together
> > > > > with
> > > > > > > > Marco
> > > > > > > > > > with
> > > > > > > > > > > > the
> > > > > > > > > > > > > > > goal of enabling a minimal Travis build that
> will
> > > run
> > > > > > > python
> > > > > > > > > > tests.
> > > > > > > > > > > > So
> > > > > > > > > > > > > > far
> > > > > > > > > > > > > > > I've verified that Travis will in fact find a
> bug
> > > > that
> > > > > > > > > currently
> > > > > > > > > > > > exists
> > > > > > > > > > > > > > in
> > > > > > > > > > > > > > > master and has been reproduced by MacOS
> clients.
> > > > This
> > > > > > > > > indicates
> > > > > > > > > > to
> > > > > > > > > > > > me
> > > > > > > > > > > > > > that
> > > > > > > > > > > > > > > adding Travis will add value to our CI.
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > My best guess is that it might take us some
> > > iteration
> > > > > > > before
> > > > > > > > we
> > > > > > > > > > > find
> > > > > > > > > > > > a
> > > > > > > > > > > > > > > scalable way to integrate Travis.  Given this
> > we're
> > > > > going
> > > > > > > to
> > > > > > > > > > enable
> > > > > > > > > > > > > > Travis
> > > > > > > > > > > > > > > in non-blocking mode (i.e. failures are safe to
> > > > ignore
> > > > > > for
> > > > > > > > the
> > > > > > > > > > time
> > > > > > > > > > > > > > being).
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > To help mitigate the risk of timeouts, and to
> > > remove
> > > > > > legacy
> > > > > > > > > code
> > > > > > > > > > > I'm
> > > > > > > > > > > > > > going
> > > > > > > > > > > > > > > to re-create the travis.yml file from
> scratch.  I
> > > > think
> > > > > > > it'll
> > > > > > > > > be
> > > > > > > > > > > much
> > > > > > > > > > > > > > less
> > > > > > > > > > > > > > > confusing if we only have working code related
> to
> > > > > Travis
> > > > > > in
> > > > > > > > our
> > > > > > > > > > > > > codebase,
> > > > > > > > > > > > > > > so that contributors won't have to experiment
> to
> > > see
> > > > > what
> > > > > > > is
> > > > > > > > or
> > > > > > > > > > > isn't
> > > > > > > > > > > > > > > working.  We've got some great, but slightly
> > > > > out-of-date
> > > > > > > > > > > > functionality
> > > > > > > > > > > > > in
> > > > > > > > > > > > > > > the legacy .travis.yml file.  I hope we can
> work
> > > > > together
> > > > > > > to
> > > > > > > > > > update
> > > > > > > > > > > > the
> > > > > > > > > > > > > > > legacy features, ensure they work with the
> > current
> > > > > folder
> > > > > > > > > > structure
> > > > > > > > > > > > and
> > > > > > > > > > > > > > > also make sure the features run within Travis's
> > 45
> > > > > minute
> > > > > > > > > global
> > > > > > > > > > > time
> > > > > > > > > > > > > > > window.
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > I'd also like to set expectations that this is
> > > > > strictly a
> > > > > > > > > > volunteer
> > > > > > > > > > > > > > > effort.  I'd welcome help from the community
> for
> > > > > support
> > > > > > > and
> > > > > > > > > > > > > maintenance.
> > > > > > > > > > > > > > > The model downloading caching work particularly
> > > > stands
> > > > > > out
> > > > > > > to
> > > > > > > > > me
> > > > > > > > > > as
> > > > > > > > > > > > > > > something I'd like to re-enable again as soon
> as
> > > > > > possible.
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > -Kellen
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > On Tue, Jan 9, 2018 at 11:52 AM Marco de Abreu
> <
> > > > > > > > > > > > > > > marco.g.abreu@googlemail.com>
> > > > > > > > > > > > > > > wrote:
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > Looks good! +1
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > On Tue, Jan 9, 2018 at 10:24 AM, kellen
> > > sunderland
> > > > <
> > > > > > > > > > > > > > > > kellen.sunderland@gmail.com> wrote:
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > I think most were in favour of at a minimum
> > > > > creating
> > > > > > a
> > > > > > > > > clang
> > > > > > > > > > > > build
> > > > > > > > > > > > > so
> > > > > > > > > > > > > > > > I've
> > > > > > > > > > > > > > > > > created a PR
> > > > > > > > > > > > > > > > >
> > > > > > > > >
> https://github.com/apache/incubator-mxnet/pull/9330/commits/
> > > > > > > > > > > > > > > > > 84089ea14123ebe4d66cc92e82a2d529cfbd8b19.
> > > > > > > > > > > > > > > > > My hope is this will catch many of the
> issues
> > > > > > blocking
> > > > > > > > OSX
> > > > > > > > > > > > builds.
> > > > > > > > > > > > > > In
> > > > > > > > > > > > > > > > fact
> > > > > > > > > > > > > > > > > it already caught one issue.  If you guys
> are
> > > in
> > > > > > > favour I
> > > > > > > > > can
> > > > > > > > > > > > > remove
> > > > > > > > > > > > > > > the
> > > > > > > > > > > > > > > > > WIP and ask that it be merged.
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > On Thu, Jan 4, 2018 at 6:29 PM, Chris
> > Olivier <
> > > > > > > > > > > > > cjolivier01@gmail.com
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > wrote:
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > Nope, I have been on vacation.
> > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > On Thu, Jan 4, 2018 at 9:10 AM, kellen
> > > > > sunderland <
> > > > > > > > > > > > > > > > > > kellen.sunderland@gmail.com> wrote:
> > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > Hope everyone had a good break.  Just
> > > wanted
> > > > to
> > > > > > > check
> > > > > > > > > if
> > > > > > > > > > > > there
> > > > > > > > > > > > > > were
> > > > > > > > > > > > > > > > > > further
> > > > > > > > > > > > > > > > > > > thoughts on OSX builds.  Chris, did you
> > > have
> > > > > time
> > > > > > > to
> > > > > > > > > look
> > > > > > > > > > > > into
> > > > > > > > > > > > > > > > > > virtualizing
> > > > > > > > > > > > > > > > > > > Mac OS?  Would it make sense for us to
> > put
> > > > > > > something
> > > > > > > > in
> > > > > > > > > > > place
> > > > > > > > > > > > > in
> > > > > > > > > > > > > > > the
> > > > > > > > > > > > > > > > > > > interim e.g. the clang solution?
> > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > On Tue, Dec 12, 2017 at 7:59 PM, de
> > Abreu,
> > > > > Marco
> > > > > > <
> > > > > > > > > > > > > > > mabreu@amazon.com>
> > > > > > > > > > > > > > > > > > > wrote:
> > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > Thanks for looking into this, Chris!
> No
> > > > > hurries
> > > > > > > on
> > > > > > > > > that
> > > > > > > > > > > > one,
> > > > > > > > > > > > > > > we’ll
> > > > > > > > > > > > > > > > > look
> > > > > > > > > > > > > > > > > > > > into it next stage when we add new
> > > system-
> > > > > and
> > > > > > > > > > > > > > > build-configurations
> > > > > > > > > > > > > > > > > to
> > > > > > > > > > > > > > > > > > > the
> > > > > > > > > > > > > > > > > > > > CI.
> > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > On 12.12.17, 19:12, "Chris Olivier" <
> > > > > > > > > > > cjolivier01@gmail.com
> > > > > > > > > > > > >
> > > > > > > > > > > > > > > wrote:
> > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > >     I am on vacation starting
> Thursday.
> > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > >     On Tue, Dec 12, 2017 at 9:49 AM
> > > kellen
> > > > > > > > > sunderland <
> > > > > > > > > > > > > > > > > > > >     kellen.sunderland@gmail.com>
> > wrote:
> > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > >     > Absolutely, let's do an
> > > investigation
> > > > > and
> > > > > > > see
> > > > > > > > > if
> > > > > > > > > > > it's
> > > > > > > > > > > > > > > > possible
> > > > > > > > > > > > > > > > > to
> > > > > > > > > > > > > > > > > > > >     > virtualize.  Would you have
> time
> > to
> > > > > look
> > > > > > > into
> > > > > > > > > it
> > > > > > > > > > a
> > > > > > > > > > > > bit
> > > > > > > > > > > > > > > > further?
> > > > > > > > > > > > > > > > > > > >     >
> > > > > > > > > > > > > > > > > > > >     > On Tue, Dec 12, 2017 at 6:47
> PM,
> > > > Chris
> > > > > > > > Olivier
> > > > > > > > > <
> > > > > > > > > > > > > > > > > > > > cjolivier01@gmail.com>
> > > > > > > > > > > > > > > > > > > >     > wrote:
> > > > > > > > > > > > > > > > > > > >     >
> > > > > > > > > > > > > > > > > > > >     > > Don’t get me wrong, I’m not
> > > saying
> > > > > this
> > > > > > > Mac
> > > > > > > > > OS
> > > > > > > > > > > > > Jenkins
> > > > > > > > > > > > > > > > > solution
> > > > > > > > > > > > > > > > > > > is
> > > > > > > > > > > > > > > > > > > > doable
> > > > > > > > > > > > > > > > > > > >     > > but I feel like we should
> > > > investigate
> > > > > > > > because
> > > > > > > > > > the
> > > > > > > > > > > > > > payoff
> > > > > > > > > > > > > > > > > would
> > > > > > > > > > > > > > > > > > be
> > > > > > > > > > > > > > > > > > > > large.
> > > > > > > > > > > > > > > > > > > >     > >
> > > > > > > > > > > > > > > > > > > >     > >
> > > > > > > > > > > > > > > > > > > >     > > On Tue, Dec 12, 2017 at 9:38
> AM
> > > > Chris
> > > > > > > > > Olivier <
> > > > > > > > > > > > > > > > > > > > cjolivier01@gmail.com>
> > > > > > > > > > > > > > > > > > > >     > > wrote:
> > > > > > > > > > > > > > > > > > > >     > >
> > > > > > > > > > > > > > > > > > > >     > > > Apple’s Darwin OS Is
> recently
> > > > > > > > open-sourced.
> > > > > > > > > > > > > > > > > > > >     > > >
> > > > > > > https://github.com/PureDarwin/PureDarwin
> > > > > > > > > > > > > > > > > > > >     > > >
> > > > > > > > > > > > > > > > > > > >     > > > How to convert this into a
> > > > non-GUI
> > > > > > VM I
> > > > > > > > am
> > > > > > > > > > not
> > > > > > > > > > > > sure
> > > > > > > > > > > > > > > but I
> > > > > > > > > > > > > > > > > am
> > > > > > > > > > > > > > > > > > > > willing to
> > > > > > > > > > > > > > > > > > > >     > > > bet that people have done
> it
> > > > > already.
> > > > > > > > > > > > > > > > > > > >     > > >
> > > > > > > > > > > > > > > > > > > >     > > > On Tue, Dec 12, 2017 at
> 9:16
> > AM
> > > > > > kellen
> > > > > > > > > > > > sunderland <
> > > > > > > > > > > > > > > > > > > >     > > >
> kellen.sunderland@gmail.com>
> > > > > wrote:
> > > > > > > > > > > > > > > > > > > >     > > >
> > > > > > > > > > > > > > > > > > > >     > > >> It might be technically
> > > > possible,
> > > > > > but
> > > > > > > I
> > > > > > > > > > think
> > > > > > > > > > > it
> > > > > > > > > > > > > > would
> > > > > > > > > > > > > > > > > > violate
> > > > > > > > > > > > > > > > > > > > the
> > > > > > > > > > > > > > > > > > > >     > MacOS
> > > > > > > > > > > > > > > > > > > >     > > >> license:
> > > > http://store.apple.com/
> > > > > > > > > > > > > > > > > > Catalog/US/Images/MacOSX.htm
> > > > > > > > > > > > > > > > > > > >     > > >>
> > > > > > > > > > > > > > > > > > > >     > > >> "2. Permitted License Uses
> > and
> > > > > > > > > Restrictions.
> > > > > > > > > > > > > > > > > > > >     > > >> A. This License allows you
> > to
> > > > > > install
> > > > > > > > and
> > > > > > > > > > use
> > > > > > > > > > > > one
> > > > > > > > > > > > > > copy
> > > > > > > > > > > > > > > > of
> > > > > > > > > > > > > > > > > > the
> > > > > > > > > > > > > > > > > > > > Apple
> > > > > > > > > > > > > > > > > > > >     > > >> Software on a single
> > > > Apple-labeled
> > > > > > > > > computer
> > > > > > > > > > > at a
> > > > > > > > > > > > > > time.
> > > > > > > > > > > > > > > > > This
> > > > > > > > > > > > > > > > > > > > License
> > > > > > > > > > > > > > > > > > > >     > does
> > > > > > > > > > > > > > > > > > > >     > > >> not allow the Apple
> Software
> > > to
> > > > > > exist
> > > > > > > on
> > > > > > > > > > more
> > > > > > > > > > > > than
> > > > > > > > > > > > > > one
> > > > > > > > > > > > > > > > > > > computer
> > > > > > > > > > > > > > > > > > > > at a
> > > > > > > > > > > > > > > > > > > >     > > >> time,and you may not make
> > the
> > > > > Apple
> > > > > > > > > Software
> > > > > > > > > > > > > > available
> > > > > > > > > > > > > > > > > over
> > > > > > > > > > > > > > > > > > a
> > > > > > > > > > > > > > > > > > > > network
> > > > > > > > > > > > > > > > > > > >     > > >> where
> > > > > > > > > > > > > > > > > > > >     > > >> it could be used by
> multiple
> > > > > > computers
> > > > > > > > at
> > > > > > > > > > the
> > > > > > > > > > > > same
> > > > > > > > > > > > > > > time.
> > > > > > > > > > > > > > > > > You
> > > > > > > > > > > > > > > > > > > > may make
> > > > > > > > > > > > > > > > > > > >     > > one
> > > > > > > > > > > > > > > > > > > >     > > >> copy of the Apple Software
> > > > > > (excluding
> > > > > > > > the
> > > > > > > > > > Boot
> > > > > > > > > > > > ROM
> > > > > > > > > > > > > > > code)
> > > > > > > > > > > > > > > > > in
> > > > > > > > > > > > > > > > > > > >     > > >> machine-readable form for
> > > backup
> > > > > > > > purposes
> > > > > > > > > > > only;
> > > > > > > > > > > > > > > provided
> > > > > > > > > > > > > > > > > > that
> > > > > > > > > > > > > > > > > > > > the
> > > > > > > > > > > > > > > > > > > >     > backup
> > > > > > > > > > > > > > > > > > > >     > > >> copy must include all
> > > copyright
> > > > or
> > > > > > > other
> > > > > > > > > > > > > proprietary
> > > > > > > > > > > > > > > > > notices
> > > > > > > > > > > > > > > > > > > > contained
> > > > > > > > > > > > > > > > > > > >     > > on
> > > > > > > > > > > > > > > > > > > >     > > >> the original. "
> > > > > > > > > > > > > > > > > > > >     > > >>
> > > > > > > > > > > > > > > > > > > >     > > >> I could be wrong though,
> > does
> > > > > anyone
> > > > > > > > know
> > > > > > > > > > the
> > > > > > > > > > > > > > details
> > > > > > > > > > > > > > > of
> > > > > > > > > > > > > > > > > > MacOS
> > > > > > > > > > > > > > > > > > > >     > > licensing /
> > > > > > > > > > > > > > > > > > > >     > > >> virtualization?
> > > > > > > > > > > > > > > > > > > >     > > >>
> > > > > > > > > > > > > > > > > > > >     > > >> On Tue, Dec 12, 2017 at
> 6:10
> > > PM,
> > > > > > Chris
> > > > > > > > > > > Olivier <
> > > > > > > > > > > > > > > > > > > > cjolivier01@gmail.com
> > > > > > > > > > > > > > > > > > > >     > >
> > > > > > > > > > > > > > > > > > > >     > > >> wrote:
> > > > > > > > > > > > > > > > > > > >     > > >>
> > > > > > > > > > > > > > > > > > > >     > > >> > googling seems to be
> full
> > of
> > > > > > running
> > > > > > > > OSX
> > > > > > > > > > > (and
> > > > > > > > > > > > > even
> > > > > > > > > > > > > > > > > > > > open-sourced
> > > > > > > > > > > > > > > > > > > >     > > >> PureDarwin)
> > > > > > > > > > > > > > > > > > > >     > > >> > in VMs. One could
> > > conceivably
> > > > > run
> > > > > > a
> > > > > > > VM
> > > > > > > > > on
> > > > > > > > > > an
> > > > > > > > > > > > EC2
> > > > > > > > > > > > > > > > > instance,
> > > > > > > > > > > > > > > > > > > > right?
> > > > > > > > > > > > > > > > > > > >     > > >> >
> > > > > > > > > > > > > > > > > > > >     > > >> > On Tue, Dec 12, 2017 at
> > 9:01
> > > > AM
> > > > > > > kellen
> > > > > > > > > > > > > sunderland
> > > > > > > > > > > > > > <
> > > > > > > > > > > > > > > > > > > >     > > >> >
> > kellen.sunderland@gmail.com
> > > >
> > > > > > wrote:
> > > > > > > > > > > > > > > > > > > >     > > >> >
> > > > > > > > > > > > > > > > > > > >     > > >> > > It would be ideal if
> we
> > > > could
> > > > > > > cover
> > > > > > > > > OSX
> > > > > > > > > > in
> > > > > > > > > > > > > > > Jenkins,
> > > > > > > > > > > > > > > > > but
> > > > > > > > > > > > > > > > > > > the
> > > > > > > > > > > > > > > > > > > > only
> > > > > > > > > > > > > > > > > > > >     > > >> solution
> > > > > > > > > > > > > > > > > > > >     > > >> > > that I'm aware of
> would
> > > > > require
> > > > > > > > > physical
> > > > > > > > > > > > > > machines
> > > > > > > > > > > > > > > to
> > > > > > > > > > > > > > > > > be
> > > > > > > > > > > > > > > > > > > the
> > > > > > > > > > > > > > > > > > > >     > workers.
> > > > > > > > > > > > > > > > > > > >     > > >> I
> > > > > > > > > > > > > > > > > > > >     > > >> > > would be weakly
> opposed
> > to
> > > > > > having
> > > > > > > > > > physical
> > > > > > > > > > > > > > servers
> > > > > > > > > > > > > > > > > > running
> > > > > > > > > > > > > > > > > > > > on PRs.
> > > > > > > > > > > > > > > > > > > >     > > >> The
> > > > > > > > > > > > > > > > > > > >     > > >> > > downsides that I see
> in
> > > > order
> > > > > of
> > > > > > > > > > > importance:
> > > > > > > > > > > > > > > > > > > >     > > >> > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > -  We can't autoscale
> > > > physical
> > > > > > > > > hardware.
> > > > > > > > > > > >  If
> > > > > > > > > > > > > we
> > > > > > > > > > > > > > > > find
> > > > > > > > > > > > > > > > > > that
> > > > > > > > > > > > > > > > > > > > the
> > > > > > > > > > > > > > > > > > > >     > load
> > > > > > > > > > > > > > > > > > > >     > > is
> > > > > > > > > > > > > > > > > > > >     > > >> > too
> > > > > > > > > > > > > > > > > > > >     > > >> > > high we have to buy
> more
> > > > > > machines.
> > > > > > > > > > > > > > > > > > > >     > > >> > > -  Security would be
> > > tricky,
> > > > > as
> > > > > > > > they'd
> > > > > > > > > > > have
> > > > > > > > > > > > to
> > > > > > > > > > > > > > be
> > > > > > > > > > > > > > > > > > > connected
> > > > > > > > > > > > > > > > > > > > to the
> > > > > > > > > > > > > > > > > > > >     > > >> > internet
> > > > > > > > > > > > > > > > > > > >     > > >> > > and then to our Jekins
> > > > master
> > > > > > > > > instance.
> > > > > > > > > > > > > > > Connecting
> > > > > > > > > > > > > > > > > via
> > > > > > > > > > > > > > > > > > a
> > > > > > > > > > > > > > > > > > > > wired
> > > > > > > > > > > > > > > > > > > >     > > >> network
> > > > > > > > > > > > > > > > > > > >     > > >> > > would probably not be
> > > > possible
> > > > > > on
> > > > > > > > most
> > > > > > > > > > > > > corporate
> > > > > > > > > > > > > > > > > > networks
> > > > > > > > > > > > > > > > > > > > as these
> > > > > > > > > > > > > > > > > > > >     > > >> > machines
> > > > > > > > > > > > > > > > > > > >     > > >> > > are by definition
> > running
> > > > > > > arbitrary
> > > > > > > > > code
> > > > > > > > > > > > from
> > > > > > > > > > > > > > the
> > > > > > > > > > > > > > > > > > > > internet.  Many
> > > > > > > > > > > > > > > > > > > >     > > >> > corporate
> > > > > > > > > > > > > > > > > > > >     > > >> > > sites have public wifi
> > > that
> > > > > this
> > > > > > > > > machine
> > > > > > > > > > > > could
> > > > > > > > > > > > > > > > > > potentially
> > > > > > > > > > > > > > > > > > > > connect
> > > > > > > > > > > > > > > > > > > >     > > to,
> > > > > > > > > > > > > > > > > > > >     > > >> > but
> > > > > > > > > > > > > > > > > > > >     > > >> > > then our PRs start
> > failing
> > > > if
> > > > > > the
> > > > > > > > wifi
> > > > > > > > > > > > > > disconnects
> > > > > > > > > > > > > > > > > > > > temporarily.
> > > > > > > > > > > > > > > > > > > >     > To
> > > > > > > > > > > > > > > > > > > >     > > >> > connect
> > > > > > > > > > > > > > > > > > > >     > > >> > > to the master we would
> > > need
> > > > to
> > > > > > > > setup a
> > > > > > > > > > vpn
> > > > > > > > > > > > > > > solution
> > > > > > > > > > > > > > > > > with
> > > > > > > > > > > > > > > > > > > > endpoints
> > > > > > > > > > > > > > > > > > > >     > > in
> > > > > > > > > > > > > > > > > > > >     > > >> our
> > > > > > > > > > > > > > > > > > > >     > > >> > > vpc on AWS.  This is
> > > > possible
> > > > > > but
> > > > > > > > > would
> > > > > > > > > > > > > probably
> > > > > > > > > > > > > > > > > > require a
> > > > > > > > > > > > > > > > > > > > lot of
> > > > > > > > > > > > > > > > > > > >     > > >> > security
> > > > > > > > > > > > > > > > > > > >     > > >> > > work.
> > > > > > > > > > > > > > > > > > > >     > > >> > > -  We can't just
> create
> > a
> > > > > simple
> > > > > > > > > startup
> > > > > > > > > > > > > script
> > > > > > > > > > > > > > or
> > > > > > > > > > > > > > > > > yaml
> > > > > > > > > > > > > > > > > > > > file that
> > > > > > > > > > > > > > > > > > > >     > is
> > > > > > > > > > > > > > > > > > > >     > > >> > > checked into GitHub to
> > > > manage
> > > > > > the
> > > > > > > > > > machine.
> > > > > > > > > > > > > > > Someone
> > > > > > > > > > > > > > > > > will
> > > > > > > > > > > > > > > > > > > > actually
> > > > > > > > > > > > > > > > > > > >     > > >> have to
> > > > > > > > > > > > > > > > > > > >     > > >> > > physically administer
> > the
> > > > > > machine,
> > > > > > > > > apply
> > > > > > > > > > > > > > updates,
> > > > > > > > > > > > > > > > etc.
> > > > > > > > > > > > > > > > > > > > which will
> > > > > > > > > > > > > > > > > > > >     > > make
> > > > > > > > > > > > > > > > > > > >     > > >> > > community ownership
> > > > difficult.
> > > > > > > > > > > > > > > > > > > >     > > >> > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > Specific to an OSX
> > build:
> > > > > > > > > > > > > > > > > > > >     > > >> > > -  We can't virtualize
> > OSX
> > > > > which
> > > > > > > > means
> > > > > > > > > > > we'd
> > > > > > > > > > > > > only
> > > > > > > > > > > > > > > be
> > > > > > > > > > > > > > > > > able
> > > > > > > > > > > > > > > > > > > to
> > > > > > > > > > > > > > > > > > > > cover
> > > > > > > > > > > > > > > > > > > >     > > one
> > > > > > > > > > > > > > > > > > > >     > > >> OSX
> > > > > > > > > > > > > > > > > > > >     > > >> > > build environment per
> > > > physical
> > > > > > > > device.
> > > > > > > > > > We
> > > > > > > > > > > > > > > couldn't
> > > > > > > > > > > > > > > > > > > target a
> > > > > > > > > > > > > > > > > > > >     > matrix
> > > > > > > > > > > > > > > > > > > >     > > of
> > > > > > > > > > > > > > > > > > > >     > > >> > OSX
> > > > > > > > > > > > > > > > > > > >     > > >> > > and Xcode versions as
> in
> > > > > Travis.
> > > > > > > > > > > > > > > > > > > >     > > >> > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > -Kellen
> > > > > > > > > > > > > > > > > > > >     > > >> > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > On Tue, Dec 12, 2017
> at
> > > 5:46
> > > > > PM,
> > > > > > > > Chris
> > > > > > > > > > > > > Olivier <
> > > > > > > > > > > > > > > > > > > >     > > cjolivier01@gmail.com
> > > > > > > > > > > > > > > > > > > >     > > >> >
> > > > > > > > > > > > > > > > > > > >     > > >> > > wrote:
> > > > > > > > > > > > > > > > > > > >     > > >> > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > > So why Travis when
> we
> > > > could
> > > > > > > > possibly
> > > > > > > > > > use
> > > > > > > > > > > > > > > Jenkins?
> > > > > > > > > > > > > > > > > > > >     > > >> > > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > > On Tue, Dec 12, 2017
> > at
> > > > 7:59
> > > > > > AM
> > > > > > > > > Marco
> > > > > > > > > > de
> > > > > > > > > > > > > > Abreu <
> > > > > > > > > > > > > > > > > > > >     > > >> > > >
> > > > > marco.g.abreu@googlemail.com>
> > > > > > > > > > > > > > > > > > > >     > > >> > > > wrote:
> > > > > > > > > > > > > > > > > > > >     > > >> > > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > Yes that's
> correct,
> > > > Chris.
> > > > > > > > > > > > > > > > > > > >     > > >> > > > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > Am 12.12.2017 4:46
> > > > nachm.
> > > > > > > > schrieb
> > > > > > > > > > > "Chris
> > > > > > > > > > > > > > > > Olivier"
> > > > > > > > > > > > > > > > > <
> > > > > > > > > > > > > > > > > > > >     > > >> > > cjolivier01@gmail.com
> > > > > > > > > > > > > > > > > > > >     > > >> > > > >:
> > > > > > > > > > > > > > > > > > > >     > > >> > > > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > A quick google
> > > search
> > > > > > seems
> > > > > > > to
> > > > > > > > > > > > indicate
> > > > > > > > > > > > > > that
> > > > > > > > > > > > > > > > Mac
> > > > > > > > > > > > > > > > > > can
> > > > > > > > > > > > > > > > > > > > be used
> > > > > > > > > > > > > > > > > > > >     > > as
> > > > > > > > > > > > > > > > > > > >     > > >> a
> > > > > > > > > > > > > > > > > > > >     > > >> > > > Jenkins
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > slave. Is this
> > > > correct?
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > On Tue, Dec 12,
> > 2017
> > > > at
> > > > > > 7:42
> > > > > > > > AM
> > > > > > > > > > > > Steffen
> > > > > > > > > > > > > > > > Rochel <
> > > > > > > > > > > > > > > > > > > >     > > >> > > >
> > steffenrochel@gmail.com
> > > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > wrote:
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > +1 for #1 and
> #2
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > I’m working on
> > > > > getting a
> > > > > > > > > MacPro
> > > > > > > > > > to
> > > > > > > > > > > > add
> > > > > > > > > > > > > > to
> > > > > > > > > > > > > > > CI
> > > > > > > > > > > > > > > > > > > system.
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > On Tue, Dec
> 12,
> > > 2017
> > > > > at
> > > > > > > 1:43
> > > > > > > > > AM
> > > > > > > > > > > > kellen
> > > > > > > > > > > > > > > > > > sunderland
> > > > > > > > > > > > > > > > > > > <
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > >
> > > > > > > kellen.sunderland@gmail.com
> > > > > > > > >
> > > > > > > > > > > wrote:
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > Background:
> > > > > TravisCI
> > > > > > > is a
> > > > > > > > > > > startup
> > > > > > > > > > > > > > > > providing
> > > > > > > > > > > > > > > > > > > > managed
> > > > > > > > > > > > > > > > > > > >     > > >> continuous
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > integration
> > > > services
> > > > > > > with
> > > > > > > > > > GitHub
> > > > > > > > > > > > > > > > integration
> > > > > > > > > > > > > > > > > > and
> > > > > > > > > > > > > > > > > > > > YAML
> > > > > > > > > > > > > > > > > > > >     > > based
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > configuration.
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > TravisCI is
> > one
> > > of
> > > > > the
> > > > > > > few
> > > > > > > > > CI
> > > > > > > > > > > > > > providers
> > > > > > > > > > > > > > > > that
> > > > > > > > > > > > > > > > > > > will
> > > > > > > > > > > > > > > > > > > > build
> > > > > > > > > > > > > > > > > > > >     > a
> > > > > > > > > > > > > > > > > > > >     > > >> > variety
> > > > > > > > > > > > > > > > > > > >     > > >> > > > of
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > OSX/MacOS
> > builds
> > > > for
> > > > > > > > > software
> > > > > > > > > > > > > > projects.
> > > > > > > > > > > > > > > > > Their
> > > > > > > > > > > > > > > > > > > > pricing
> > > > > > > > > > > > > > > > > > > >     > > >> ranges
> > > > > > > > > > > > > > > > > > > >     > > >> > > from
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > Free
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > (for open
> > > source,
> > > > 1
> > > > > > > > > concurrent
> > > > > > > > > > > > job,
> > > > > > > > > > > > > to
> > > > > > > > > > > > > > > > $489
> > > > > > > > > > > > > > > > > > > > monthly for
> > > > > > > > > > > > > > > > > > > >     > 10
> > > > > > > > > > > > > > > > > > > >     > > >> > > > concurrent
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > jobs).
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > Problem:
> We’ve
> > > > had a
> > > > > > few
> > > > > > > > OSX
> > > > > > > > > > > build
> > > > > > > > > > > > > > > issues
> > > > > > > > > > > > > > > > > slip
> > > > > > > > > > > > > > > > > > > > into
> > > > > > > > > > > > > > > > > > > >     > MXNet
> > > > > > > > > > > > > > > > > > > >     > > >> > master
> > > > > > > > > > > > > > > > > > > >     > > >> > > in
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > the
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > past few
> > weeks.
> > > > > We’ve
> > > > > > > > > > > previously
> > > > > > > > > > > > > had
> > > > > > > > > > > > > > a
> > > > > > > > > > > > > > > > > Travis
> > > > > > > > > > > > > > > > > > > CI
> > > > > > > > > > > > > > > > > > > > based
> > > > > > > > > > > > > > > > > > > >     > > >> testing
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > system
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > that
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > would have
> > > caught
> > > > > > these
> > > > > > > > > > issues.
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > Proposals so
> > > far:
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > 1) Use
> > TravisCI
> > > in
> > > > > > it’s
> > > > > > > > free
> > > > > > > > > > > mode
> > > > > > > > > > > > > for
> > > > > > > > > > > > > > a
> > > > > > > > > > > > > > > > very
> > > > > > > > > > > > > > > > > > > > minimal
> > > > > > > > > > > > > > > > > > > >     > > sanity
> > > > > > > > > > > > > > > > > > > >     > > >> > check
> > > > > > > > > > > > > > > > > > > >     > > >> > > > on
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > OSX.
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > If we
> compile
> > > the
> > > > > > > program,
> > > > > > > > > and
> > > > > > > > > > > for
> > > > > > > > > > > > > > > example
> > > > > > > > > > > > > > > > > run
> > > > > > > > > > > > > > > > > > > > C++ unit
> > > > > > > > > > > > > > > > > > > >     > > >> tests
> > > > > > > > > > > > > > > > > > > >     > > >> > > we’re
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > unlikely to
> > run
> > > > into
> > > > > > > > > problems
> > > > > > > > > > > with
> > > > > > > > > > > > > > > queued
> > > > > > > > > > > > > > > > > > > > builds.  The
> > > > > > > > > > > > > > > > > > > >     > > total
> > > > > > > > > > > > > > > > > > > >     > > >> > > build
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > time
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > here should
> be
> > > > less
> > > > > > than
> > > > > > > > 15
> > > > > > > > > > > > minutes.
> > > > > > > > > > > > > > > > > > > > Configuration
> > > > > > > > > > > > > > > > > > > >     > should
> > > > > > > > > > > > > > > > > > > >     > > >> be
> > > > > > > > > > > > > > > > > > > >     > > >> > > quite
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > simple
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > and easy to
> > > > > maintain.
> > > > > > > > Error
> > > > > > > > > > > > > messages
> > > > > > > > > > > > > > > > should
> > > > > > > > > > > > > > > > > > > also
> > > > > > > > > > > > > > > > > > > > be
> > > > > > > > > > > > > > > > > > > >     > > >> obvious to
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > >
> contributors.
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > 2) Run clang
> > in
> > > > > Linux
> > > > > > > with
> > > > > > > > > our
> > > > > > > > > > > > > current
> > > > > > > > > > > > > > > CI.
> > > > > > > > > > > > > > > > > > > > Building
> > > > > > > > > > > > > > > > > > > >     > with
> > > > > > > > > > > > > > > > > > > >     > > >> clang
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > should
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > take less
> than
> > > 10
> > > > > > > minutes,
> > > > > > > > > > > should
> > > > > > > > > > > > > > flush
> > > > > > > > > > > > > > > > out
> > > > > > > > > > > > > > > > > a
> > > > > > > > > > > > > > > > > > > > large
> > > > > > > > > > > > > > > > > > > >     > subset
> > > > > > > > > > > > > > > > > > > >     > > >> of
> > > > > > > > > > > > > > > > > > > >     > > >> > the
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > issues
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > we’ve seen
> > with
> > > > OSX,
> > > > > > and
> > > > > > > > be
> > > > > > > > > > > quite
> > > > > > > > > > > > > easy
> > > > > > > > > > > > > > > to
> > > > > > > > > > > > > > > > > > > > maintain.
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > 3) Run full
> > > > > > test-suites
> > > > > > > in
> > > > > > > > > > > > TravisCI,
> > > > > > > > > > > > > > > > > equaling
> > > > > > > > > > > > > > > > > > > the
> > > > > > > > > > > > > > > > > > > > level
> > > > > > > > > > > > > > > > > > > >     > of
> > > > > > > > > > > > > > > > > > > >     > > >> > > coverage
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > we
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > provide to
> > Linux
> > > > in
> > > > > > > > Jenkins.
> > > > > > > > > > > This
> > > > > > > > > > > > > > could
> > > > > > > > > > > > > > > > > > require
> > > > > > > > > > > > > > > > > > > > us to
> > > > > > > > > > > > > > > > > > > >     > > >> > subscribe
> > > > > > > > > > > > > > > > > > > >     > > >> > > > to a
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > monthly
> > package
> > > > with
> > > > > > > > Travis
> > > > > > > > > to
> > > > > > > > > > > > > ensure
> > > > > > > > > > > > > > > our
> > > > > > > > > > > > > > > > > > build
> > > > > > > > > > > > > > > > > > > > queue
> > > > > > > > > > > > > > > > > > > >     > > >> doesn’t
> > > > > > > > > > > > > > > > > > > >     > > >> > > grow
> > > > > > > > > > > > > > > > > > > >     > > >> > > > to
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > an
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > unacceptable
> > > > length.
> > > > > > It
> > > > > > > > may
> > > > > > > > > > > also
> > > > > > > > > > > > > > > require
> > > > > > > > > > > > > > > > a
> > > > > > > > > > > > > > > > > > > > volunteer to
> > > > > > > > > > > > > > > > > > > >     > > >> setup
> > > > > > > > > > > > > > > > > > > >     > > >> > > and
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > maintain
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > long-term.
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > >
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > I’d +1 #1
> and
> > #2
> > > > as
> > > > > I
> > > > > > > > think
> > > > > > > > > > > those
> > > > > > > > > > > > > > should
> > > > > > > > > > > > > > > > be
> > > > > > > > > > > > > > > > > > > > low-cost,
> > > > > > > > > > > > > > > > > > > >     > > >> > > low-maintence
> > > > > > > > > > > > > > > > > > > >     > > >> > > > > > > > solutions
> that
> > > > > should
> > > > > > > > catch
>

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