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ci: fix Python dependency on Ubuntu 24.04

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Newer versions of Ubuntu have dropped Python 2 starting with Ubuntu
23.04. By default though, our CI setups will try to use that Python
version on all Ubuntu-based jobs except for the "linux-gcc" one.

We didn't notice this issue due to two reasons:

  - The "ubuntu:latest" tag always points to the latest LTS release.
    Until a few weeks ago this was Ubuntu 22.04, which still had Python
    2.

  - Our Docker-based CI jobs had their own script to install
    dependencies until 9cdeb34b96 (ci: merge scripts which install
    dependencies, 2024-04-12), where we didn't even try to install
    Python at all for many of them.

Since the CI refactorings have originally been implemented, Ubuntu
24.04 was released, and it being an LTS versions means that the "latest"
tag now points to that Python-2-less version. Consequently, those jobs
that use "ubuntu:latest" broke.

Address this by using Python 2 on Ubuntu 20.04, only, whereas we use
Python 3 on all other Ubuntu jobs. Eventually, we should think about
dropping support for Python 2 completely.

Reported-by: Justin Tobler <jltobler@gmail.com>
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt 2024-05-06 07:35:17 +02:00 committed by Junio C Hamano
parent 786a3e4b8d
commit 5ca0c455f1
1 changed files with 6 additions and 2 deletions
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8
ci/lib.sh
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@ -325,9 +325,13 @@ ubuntu-*)
break
fi
PYTHON_PACKAGE=python2
if test "$jobname" = linux-gcc
# Python 2 is end of life, and Ubuntu 23.04 and newer don't actually
# have it anymore. We thus only test with Python 2 on older LTS
# releases.
if "$distro" = "ubuntu-20.04"
then
PYTHON_PACKAGE=python2
else
PYTHON_PACKAGE=python3
fi
MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=/usr/bin/$PYTHON_PACKAGE"