Re: [PATCH v3 1/4] github-actions: run gcc-8 on ubuntu-20.04 image

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On Thu, Nov 24 2022, Jiang Xin wrote:

> From: Jiang Xin <zhiyou.jx@xxxxxxxxxxxxxxx>
>
> GitHub starts to upgrade its runner image "ubuntu-latest" from version
> "ubuntu-20.04" to version "ubuntu-22.04". It will fail to find and
> install "gcc-8" package on the new runner image.
>
> Change the runner images from "ubuntu-latest" to "ubuntu-20.04" in order
> to run with "gcc-8" as a dependency.
>
> Instead of use the environment "$runs_on_pool" as below:
>
>     case "$runs_on_pool" in
>     ubuntu-20.04 | ubuntu-latest)
> 	;;
>
> we can reuse the os field in the matrix, and use a new environment
> "$runs_on_os" as below:
>
>     case "$runs_on_os" in
>     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.
>
> Reviewed-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
> Signed-off-by: Jiang Xin <zhiyou.jx@xxxxxxxxxxxxxxx>
> ---
>  .github/workflows/main.yml | 16 ++++++++++++----
>  ci/install-dependencies.sh |  6 +++---
>  ci/lib.sh                  |  6 +++---
>  3 files changed, 18 insertions(+), 10 deletions(-)
>
> diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
> index 592f9193a8..da0d8ab0bf 100644
> --- a/.github/workflows/main.yml
> +++ b/.github/workflows/main.yml
> @@ -224,6 +224,7 @@ jobs:
>          vector:
>            - jobname: linux-clang
>              cc: clang
> +            os: ubuntu
>              pool: ubuntu-latest
>            - jobname: linux-sha256
>              cc: clang
> @@ -232,36 +233,43 @@ jobs:
>            - jobname: linux-gcc
>              cc: gcc
>              cc_package: gcc-8
> -            pool: ubuntu-latest
> +            os: ubuntu
> +            pool: ubuntu-20.04
>            - jobname: linux-TEST-vars
>              cc: gcc
> -            os: ubuntu
>              cc_package: gcc-8
> -            pool: ubuntu-latest
> +            os: ubuntu
> +            pool: ubuntu-20.04
>            - jobname: osx-clang
>              cc: clang
> +            os: macos
>              pool: macos-latest
>            - jobname: osx-gcc
>              cc: gcc
>              cc_package: gcc-9
> +            os: macos
>              pool: macos-latest
>            - jobname: linux-gcc-default
>              cc: gcc
> +            os: ubuntu
>              pool: ubuntu-latest
>            - jobname: linux-leaks
>              cc: gcc
> +            os: ubuntu
>              pool: ubuntu-latest
>            - jobname: linux-asan
>              cc: gcc
> +            os: ubuntu
>              pool: ubuntu-latest
>            - jobname: linux-ubsan
>              cc: gcc
> +            os: ubuntu
>              pool: ubuntu-latest
>      env:
>        CC: ${{matrix.vector.cc}}
>        CC_PACKAGE: ${{matrix.vector.cc_package}}
>        jobname: ${{matrix.vector.jobname}}
> -      runs_on_pool: ${{matrix.vector.pool}}
> +      runs_on_os: ${{matrix.vector.os}}
>      runs-on: ${{matrix.vector.pool}}
>      steps:
>      - uses: actions/checkout@v2
> diff --git a/ci/install-dependencies.sh b/ci/install-dependencies.sh
> index 107757a1fe..f639263a62 100755
> --- a/ci/install-dependencies.sh
> +++ b/ci/install-dependencies.sh
> @@ -11,8 +11,8 @@ UBUNTU_COMMON_PKGS="make libssl-dev libcurl4-openssl-dev libexpat-dev
>   tcl tk gettext zlib1g-dev perl-modules liberror-perl libauthen-sasl-perl
>   libemail-valid-perl libio-socket-ssl-perl libnet-smtp-ssl-perl"
>  
> -case "$runs_on_pool" in
> -ubuntu-latest)
> +case "$runs_on_os" in
> +ubuntu)
>  	sudo apt-get -q update
>  	sudo apt-get -q -y install language-pack-is libsvn-perl apache2 \
>  		$UBUNTU_COMMON_PKGS $CC_PACKAGE
> @@ -30,7 +30,7 @@ ubuntu-latest)
>  		cp git-lfs-$LINUX_GIT_LFS_VERSION/git-lfs .
>  	popd
>  	;;
> -macos-latest)
> +macos)
>  	export HOMEBREW_NO_AUTO_UPDATE=1 HOMEBREW_NO_INSTALL_CLEANUP=1
>  	# Uncomment this if you want to run perf tests:
>  	# brew install gnu-time
> diff --git a/ci/lib.sh b/ci/lib.sh
> index 24d20a5d64..0c0767d354 100755
> --- a/ci/lib.sh
> +++ b/ci/lib.sh
> @@ -225,8 +225,8 @@ export DEFAULT_TEST_TARGET=prove
>  export GIT_TEST_CLONE_2GB=true
>  export SKIP_DASHED_BUILT_INS=YesPlease
>  
> -case "$runs_on_pool" in
> -ubuntu-latest)
> +case "$runs_on_os" in
> +ubuntu)
>  	if test "$jobname" = "linux-gcc-default"
>  	then
>  		break
> @@ -253,7 +253,7 @@ ubuntu-latest)
>  	GIT_LFS_PATH="$HOME/custom/git-lfs"
>  	export PATH="$GIT_LFS_PATH:$P4_PATH:$PATH"
>  	;;
> -macos-latest)
> +macos)
>  	if [ "$jobname" = osx-gcc ]
>  	then
>  		MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=$(which python3)"

At the end of [1] I suggested splitting up the refactoring part of
this. I still think that would be a good thing to do, but just to
comment on the *actual* change (which I was hoping a split-out would
make clearer).

This is proposing to refactor
"runs-on-pool={ubuntu-latest,macos-latest}" to "os={ubuntu,macos}". I
think it's worth cleaning up how we match main.yml and ci/*.sh, but
think it's a bit of a digression in this otherwise narrowly focused
series.

Now, this seems to somewhat come back to being all my fault. AFAICT I
added "os" in c08bb260105 (CI: rename the "Linux32" job to lower-case
"linux32", 2021-11-23) as part of some WIP (or from an earlier version?)
that ende dup doing nothing.

But looking at it again, I don't see how an "os" here makes much
sense. For "macos-latest" if we're going to refactor it let's just stop
selecting stuff based on this "pool name", and instead fold it into the
adjacent "jobname" selection:
	
	diff --git a/ci/install-dependencies.sh b/ci/install-dependencies.sh
	index 107757a1fea..b5a373060c1 100755
	--- a/ci/install-dependencies.sh
	+++ b/ci/install-dependencies.sh
	@@ -30,7 +30,9 @@ ubuntu-latest)
	 		cp git-lfs-$LINUX_GIT_LFS_VERSION/git-lfs .
	 	popd
	 	;;
	-macos-latest)
	+esac
	+case "$jobname" in
	+osx-*)
	 	export HOMEBREW_NO_AUTO_UPDATE=1 HOMEBREW_NO_INSTALL_CLEANUP=1
	 	# Uncomment this if you want to run perf tests:
	 	# brew install gnu-time
	diff --git a/ci/lib.sh b/ci/lib.sh
	index 24d20a5d648..fef60a507e9 100755
	--- a/ci/lib.sh
	+++ b/ci/lib.sh
	@@ -253,19 +253,17 @@ ubuntu-latest)
	 	GIT_LFS_PATH="$HOME/custom/git-lfs"
	 	export PATH="$GIT_LFS_PATH:$P4_PATH:$PATH"
	 	;;
	-macos-latest)
	-	if [ "$jobname" = osx-gcc ]
	-	then
	-		MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=$(which python3)"
	-	else
	-		MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=$(which python2)"
	-		MAKEFLAGS="$MAKEFLAGS NO_APPLE_COMMON_CRYPTO=NoThanks"
	-		MAKEFLAGS="$MAKEFLAGS NO_OPENSSL=NoThanks"
	-	fi
	-	;;
	 esac
	 
	 case "$jobname" in
	+osx-gcc)
	+	MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=$(which python3)"
	+	;;
	+osx-clang)
	+	MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=$(which python2)"
	+	MAKEFLAGS="$MAKEFLAGS NO_APPLE_COMMON_CRYPTO=NoThanks"
	+	MAKEFLAGS="$MAKEFLAGS NO_OPENSSL=NoThanks"
	+	;;
	 linux32)
	 	CC=gcc
	 	;;

That nicely sidesteps the need to refactor it here, and IMO makes it
more future-proof.

For the "ubuntu" case I think it's even worse, because it now *looks*
like a case that should be equivalent to just:

	test "$(lsb_release -si 2>&1 | grep -x Debian)" = "Debian"

But it's not, because we're not setting this "os=ubuntu" in all the
places where the OS is Ubuntu. It really just means "the stuff that used
to set env.runs_on_pool=ubuntu-latest, which e.g. doesn't cover the
"documentation" job, which runs on "ubuntu-latest".

So I think *if* we're going to refactor this while-at-it, let's not make
it "os=ubuntu", but e.g. "extra_ubuntu_packages: 1", which is really
what it means. I.e. we're intercepting it in ci/lib.sh to set the "p4"
variables etc., which we only need if we're doing the optional "apt
install" on the "ubuntu-latest".

1. https://lore.kernel.org/git/221124.86mt8gpqra.gmgdl@xxxxxxxxxxxxxxxxxxx/



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