[Vm-dev] [OpenSmalltalk/opensmalltalk-vm] Fix all CI builds (#172)

Ben Coman notifications at github.com
Thu Dec 28 00:06:17 UTC 2017

On 27 December 2017 at 22:43, Esteban Lorenzano <notifications at github.com>

> heh… I have to say: I do not contribute to osvm other than PRs (never
> directly), so I always expect having a green build to merge. Also, I always
> have first a green build in my own build process (who builds all sources
> from scratch and tests the resulting VM executing all tests in Pharo), so
> when I do the PR, I tested my sources.
> The problem we had with Pharo was because of two colliding issues (non
> related):
> - server destination for deploy changed, and then keys became immediately
> wrong

Sure, this is an anomaly that shouldn't occur too often. Its kind of an
act-of-god event.
But to remove such external dependency maybe each distribution's
could move to an isolated pipeline stage, so one distribution's deploy
can never affect the status of the build itself.

> - travis updated his server and didn’t included by default anymore libcurl
> for i386

> this escapes the “you break it, you fix it”

I agree no contribution should be accepted if it does not passes through a
> PR (and CI needs to pass), but that’s actually hard to do with current
> process: today VMMaker monticello is the “development branch” and you
> cannot prepare PRs with that… you need branch before generate sources,

Actually you can create and change to a new branch after you generate
sources if you forget to do it before.
See accepted answer here...

> then commit into branch and then PR. I would recommend to use that
> approach but is more work than just commit so hard to adopt.

If one routinely uses branch-per-feature then generating sources from
VMMaker is just another-feature in a familiar workflow.
It balances the distribution a small additional effort per integration
against the work to recover from the occasional slip getting into main

I guess the main difficulty is changing workflow habits.  In practice there
is some risk in changing workflows.
Anomalies can always pop up and its about finding the time to build
confidence in a new workflow.
btw, I think the community has gained a lot already in the move from svn to
We'll get the next step sometime.

cheers -ben

> Esteban
> > On 27 Dec 2017, at 00:18, Ben Coman <notifications at github.com> wrote:
> >
> > A side-comment from the peanut gallery...
> >
> > On 16 November 2017 at 03:47, Fabio Niephaus <notifications at github.com>
> > wrote:
> >
> > > It is indeed. I was hoping we do "you break it, you fix it", but that
> > > didn't work apparently.
> > >
> > Taking the path of least resistance is human nature. There are varying
> > levels of "too busy to fix that right now." Introducing the merge-barrier
> > shifts that balance point to encourage the idealistic behaviour of fixing
> > errors asap.
> >
> > To mitigate concerns of delayed merges..
> > If these barriers sometimes get in the way of something critical, it
> should
> > be okay to temporarily disable them. But at least the default encourages
> > the ideal behaviour and bypassing that require explicit action rather
> than
> > happening accidentally.
> >
> > > We could force the Cog branch to always be green by only allowing
> changes
> > > that previously have been proven to pass, but then it takes longer to
> get
> > > things merged. Not sure if we want that...
> > >
> > Delayed merges are a fairly generic concern. It would be good to expose
> > some detail from everyone concerned that enabling the following will
> > impeded their workflow...
> >
> > https://help.github.com/assets/images/help/repository/
> protecting-branch-loose-status.png
> >
> > That is...
> > What period of delay are you concerned about?
> > How often do you you think this would be a problem?
> > Is the problem the delay in merging-code, or the delay in getting the new
> > binary to run?
> >
> > cheers -ben
> > —
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