Make site be buildable with Python 3 #45
Description
Quoting #26 (comment), which in turn takes this from 81254d8:
There is an annoying problem here:
- The site depends on
pygments.rb- Pygments.rb in turn, communicates with a Python process using a pipe (reading and writing to stdin/stdout from Python running as a child process)
- The version of Pygments.rb we use (?) do not work with Python 3. Only Python 2 works.
Ubuntu 22.04 uses Python 3 by default (and this is perhaps the case with Ubuntu 20.04 also), which causes errors like the one seen in https://github.com/perlun/perlun.eu.org/actions/runs/5913115348/job/16037183000. Copying it here into the git commit log, since Github Actions logs are unfortunately not retained forever.
bundle exec jekyll build Deprecation: The 'gems' configuration option has been renamed to 'plugins'. Please update your config file accordingly. Configuration file: /home/runner/work/perlun.eu.org/perlun.eu.org/_config.yml Source: /home/runner/work/perlun.eu.org/perlun.eu.org Destination: /home/runner/work/perlun.eu.org/perlun.eu.org/_site Incremental build: disabled. Enable with --incremental Generating... Building site for default language: "xx" to: /home/runner/work/perlun.eu.org/perlun.eu.org/_site Building site for language: "sv" to: /home/runner/work/perlun.eu.org/perlun.eu.org/_site/sv Loading translation from file /home/runner/work/perlun.eu.org/perlun.eu.org/_i18n/sv.yml Building site for language: "en" to: /home/runner/work/perlun.eu.org/perlun.eu.org/_site/en Conversion error: Jekyll::Converters::Markdown encountered an error while converting '_i18n/en/_posts/2017-03-17-new-features-in-c-sharp-6-0-and-7-0.md': No header received back. jekyll 3.9.2 | Error: No header received back.
We need to make this work, by the next year at the very latest, since Ubuntu 20.04 is going EOL then. It's unclear if/when GitHub will drop support for it, but let's rest assured that it will happen sooner or later.