Re: [PATCH v2 1/1] ci(osx): use new location of the `perforce` cask

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Hi Junio,

On Mon, 21 Oct 2019, Junio C Hamano wrote:

> SZEDER Gábor <szeder.dev@xxxxxxxxx> writes:
>
> > On Thu, Oct 17, 2019 at 12:47:33PM +0000, Johannes Schindelin via GitGitGadget wrote:
> >> From: Johannes Schindelin <johannes.schindelin@xxxxxx>
> >>
> >> The CI builds are failing for Mac OS X due to a change in the
> >
> > s/CI/Azure Pipelines/
> >
> > Our Travis CI builds are fine.
> >
> >> location of the perforce cask. The command outputs the following
> >> error:
> >>
> >>     + brew install caskroom/cask/perforce
> >>     Error: caskroom/cask was moved. Tap homebrew/cask-cask instead.
> >>
> >> So let's try to call `brew cask install perforce` first (which is what
> >> that error message suggests, in a most round-about way).
> >>
> >> The "caskroom" way was added in 672f51cb (travis-ci:
> >> fix Perforce install on macOS, 2017-01-22) and the justification
> >> is that the call "brew cask install perforce" can fail due to a checksum
> >> mismatch: the recipe simply downloads the official Perforce distro, and
> >> whenever that is updated, the recipe needs to be updated, too.
> >
> > This paragraph is wrong, it mixes up things too much.
> >
> > Prior to 672f51cb we used to install the 'perforce' _package_ with
> > 'brew install perforce' (note: no 'cask' in there).  The justification
> > for 672f51cb was that the command 'brew install perforce' simply
> > stopped working, after Homebrew folks decided that it's better to move
> > the 'perforce' package to a "cask".  It was _their_ justification for
> > this move that 'brew install perforce' "can fail due to a checksum
> > mismatch ...", and casks can be installed without checksum
> > verification.  And indeed, both 'brew cask install perforce' and 'brew
> > install caskroom/cask/perforce' printed something along the lines of:
> >
> >   ==> No checksum defined for Cask perforce, skipping verification
> >
> > It's unclear to me why 672f51cb used 'brew install
> > caskroom/cask/perforce' instead of 'brew cask install perforce'.  It
> > appears (by running both commands on old Travis CI macOS images) that
> > both commands worked all the same already back then.
> >
> > Anyway, as the error message at the top of the log message shows,
> > 'brew install caskroom/cask/perforce' has stopped working recently,
> > but 'brew cask install perforce' still does, so let's use that.
> >
> > Note that on Travis CI we explicitly specify which macOS image to use,
> > and nowadays we don't run 'brew update' during the build process [1],
> > so both commands work in our builds there.
> > ...
> > Now, let's take a step back.
> >
> > All 'brew cask install perforce' really does is ...
> > ... in fact, that's what we have been doing in some of our Linux jobs
> > since the very beginning, so basically only the download URL has to be
> > adjusted.
>
> This is already in 'next' X-<; reverting a merge is cheap but I
> prefer to do so when we already have a replacement.

I force-pushed (see https://github.com/gitgitgadget/git/pull/400), and
once Stolee approves, he will submit v3. This will only change the
commit message, though, as I disagree that hard-coding the URL would be
an improvement: the nice thing about a package management system is that
the user does not need to know the details (or need to know if the
details change, like, ever).

Ciao,
Dscho

>
> Thanks for taking a closer look.
>

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