Re: [PATCH v2 0/3] Fix broken CI on newer github-actions runner image

[Johannes Schindelin <Johannes.Schindelin@gmx.de>]

Hi,

On Thu, 24 Nov 2022, Johannes Schindelin wrote:

> To build even more confidence in the patch series, I will now start a full
> run (which will take *a lot* of build minutes, unfortunately).

And it passed: https://github.com/dscho/git/actions/runs/3539451056

I also had a look at the range-diff between v1 and v2:

-- snip --
1:  ef80c39de1e5 ! 1:  6d4607a4ee46 github-actions: run gcc-8 on ubuntu-20.04 image
    @@ Commit message
             ubuntu)
                 ;;

    +    In this way, we can change the "ubuntu-latest" runner image to any
    +    version such as "ubuntu-22.04" to test CI behavior in advance.
    +
         Signed-off-by: Jiang Xin <zhiyou.jx@alibaba-inc.com>

2:  1d0903c8b2f9 ! 2:  eba96648368a ci: upgrade version of p4
    @@ Metadata
     Author: Jiang Xin <zhiyou.jx@alibaba-inc.com>

      ## Commit message ##
    -    ci: upgrade version of p4
    +    ci: upgrade version of p4 to 21.2

         There would be a segmentation fault when running p4 v16.2 on ubuntu
         22.04 which is the latest version of ubuntu runner image for github
    -    actions. Upgrade p4 from version 16.2 to 19.2 will fix this issue.
    +    actions.

    -    Also add some instructions to show errors of command "p4 -V", so we can
    -    see why the output doesn't match.
    +    By checking each version from [1], p4d version 21.1 and above can work
    +    properly on ubuntu 22.04. But version 22.x will break some p4 test
    +    cases. So p4 version 21.x is exactly the version we can use.
    +
    +    In addition to upgrade p4 from version 16.2 to 21.2, also add some
    +    instructions to show errors of command "p4 -V", so we can see why the
    +    command output doesn't match.
    +
    +    [1]: https://cdist2.perforce.com/perforce/

         Signed-off-by: Jiang Xin <zhiyou.jx@alibaba-inc.com>
    @@ ci/lib.sh: ubuntu)
      	# image.
      	# Keep that in mind when you encounter a broken OS X build!
     -	export LINUX_P4_VERSION="16.2"
    -+	export LINUX_P4_VERSION="19.2"
    ++	export LINUX_P4_VERSION="21.2"
      	export LINUX_GIT_LFS_VERSION="1.5.2"

      	P4_PATH="$HOME/custom/p4"
-:  ------------ > 3:  8e432f13bef8 ci: install python on ubuntu
-- snap --

The changes look good!

One alternative I considered about 8e432f13bef8 (ci: install python on
ubuntu, 2022-11-24) was to drop testing Python v2.x (it's years past end
of life after all, see https://endoflife.date/python).

However, as we see frequently demonstrated on the Git mailing list:
losing focus, trying to force patch series to address more than a single
concern, gets us nowhere, and not even fast.

So I agree that the best idea in this patch series is the stop-gap
solution to install `python2` on `ubuntu-22.04`, and deal with deprecating
Python v2.x support separately, later, or never, whichever comes first ;-)

With this, here goes my (probably final, because I think this patch series
is ready):

	Reviewed-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Thank you so much for working on this, it was a thoroughly enjoyable
experience for me!

Ciao,
Dscho