Re: tcpdump continuous integration matters

[Denis Ovsienko via tcpdump-workers <tcpdump-workers () lists tcpdump org>]

> --- Begin Message ---
>
>
> From: Denis Ovsienko <denis () ovsienko info>
>
> Date: Fri, 21 Aug 2020 22:22:37 +0100
>
> On Wed, 19 Aug 2020 00:51:11 +0100
> Denis Ovsienko via tcpdump-workers <tcpdump-workers () lists tcpdump org>
> wrote:
>
> [...]
> > Also, the current Travis CI build matrix expands to 108 (!) jobs, so
> > if you are making a trivial commit (such as in the man pages or the
> > documentation), please remember to skip the CI build with [skip ci] as
> > described here:
> > https://docs.travis-ci.com/user/customizing-the-build/#skipping-a-build
>
> Let me correct myself. There are three CI systems currently at work:
> Travis, Appveyor and Cirrus. Travis takes 2 hours to complete. Appveyor
> is the second heaviest: 12 tcpdump tasks take about an hour to complete.
>
> Each CI system has a lot of original features ([1], [2]), but here is a
> short version:
>
> * To skip a CI build in all systems, place [skip ci] at the end of the
>   commit _summary_ (the very 1st line) -- tested, works, please use this
>
> * To skip CI specifically in Travis, place [skip travis] at the end of
>   the commit summary or anywhere else in the commit message.
>
> * To skip CI specifically in Appveyor, place [skip appveyor] at the end
>   of the commit summary.
>
> * The only way to skip Cirrus is to skip all systems (see the first
>   item above).
>
> What is not obvious, placing [skip ci] _not_ in the commit summary will
> skip Travis CI _only_, which is not what you would usually mean or
> expect. Unfortunately, I personally have been doing exactly that since
> the times when Travis was the only CI system and placing the
> machine-readable text out of sight made the most sense. It is different
> now, so let's all (myself in the first place) try to change this habit.
>
> Thanks.
>
> 1: https://www.appveyor.com/docs/how-to/filtering-commits/
> 2: https://cirrus-ci.org/guide/writing-tasks/#conditional-task-execution
>
> -- 
>     Denis Ovsienko
>
> --- End Message ---
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