Re: Selectively suppressing CI on some sites for a commit?

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

> --- Begin Message ---
>
>
> From: Denis Ovsienko <denis () ovsienko info>
>
> Date: Fri, 7 Jan 2022 18:53:54 +0000
>
> On Thu, 6 Jan 2022 23:35:30 -0800
> Guy Harris <gharris () sonic net> wrote:
>
> [...]
> > It appears that a "GitHub skip hook" may have been first introduce in
> > Buildbot 0.9.11:
> >
> >       https://docs.buildbot.net/0.9.11/relnotes/index.html
> >
> > with the hook being configurable by a regex match.  The 0.9.11
> > documentation of the "skips" parameter of the GitHub hook:
> >
> >       https://docs.buildbot.net/0.9.11/manual/cfg-wwwhooks.html#chsrc-GitHub
> >
> > does not say anything about the skip item having to be on the first
> > line of the commit message; it does say that the default parameter is
> >
> >       [r'\[ *skip *ci *\]', r'\[ *ci *skip *\]']
> >
> > so either [skip ci] or [ci skip] (with arbitrary numbers of blanks
> > thrown in after [, between the words, or before ]) should work.
>
> The matter is, it seems to disregard the non-default value.  This is
> what has been in the configuration since 2021-04-14:
>
> 'skips': [
>         r'\[ *skip *ci *\]',  # default
>         r'\[ *ci *skip *\]',  # default
>         r'\[ *skip *bb *\]',  # does not seem to work
>         r'\[ *skip *buildbot *\]',  # idem
> ],
>
> That had no effect on the day (Buildbot version likely 3.0.3 or 3.1.0):
> https://github.com/the-tcpdump-group/tcpslice/commit/1222006
>
> This is now on the list of potential improvements.
>
> [...]
> > So:
> >
> >       to suppress *all* builds, put [skip ci] on the first line;
> >
> >       to suppress only AppVeyor builds (which currently means "do
> > only UN*X builds"), put [skip appveyor] on the first line;
> >
> >       to suppress only Cirrus builds (which means "skip x86-64
> > Linux, x86-64 macOS, and x86-64 FreeBSD", but that doesn't suppress
> > ARM64 FreeBSD or non-x86-64 Linux, so I'm not sure how useful it is),
> > put [skip cirrus] on the first line;
> >
> >       to suppress only our buildbot builds, put [skip ci] somewhere
> > *other* than the first line;
> >
> >       to supporess any set of builders that's the union of the
> > three lines above, do the items for the builders in question.
>
> ci.html now includes this information, thank you for summarizing the
> current state.
>
> > There does not seem to be a way to do *only* Windows builds.  Putting
> > [skip cirrus] on the first line and [skip ci] elsewhere in the commit
> > message is the closest to that, but it won't suppress the OpenCSW
> > builds, meaning "only Windows and Solaris".
>
> This solution space does not match the problem space perfectly, but the
> amount of useful feedback is worth the cost.
>
> -- 
>     Denis Ovsienko
>
> --- End Message ---
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