Composer 2.0 is out... https://blog.packagist.com/composer-2-0-is-now-available/
It's already broken a few things. composer-merge-plugin also doesn't support composer 2.0 yet - https://github.com/wikimedia/composer-merge-plugin/issues/184
Vagrant started using the 2.x snapshot: https://gerrit.wikimedia.org/r/636209
[21:02:32] <Dzienny> The "vagrant up" ended with: The SSH command responded with a non-zero exit status. Vagrant [21:03:46] <Dzienny> Then I grep'ed the output for errors and found: ==> default: Error: /usr/local/bin/composer install --optimize-autoloader --prefer-dist returned 2 instead of one of [0] [21:03:46] <Dzienny> /usr/local/bin/composer install --optimize-autoloader --prefer-dist returned 2 instead of one of [0]
Vendor comment left in: https://gerrit.wikimedia.org/r/c/mediawiki/vendor/+/636210
We should make sure things are documented to only use 1.x, until necessary changes and updates have been made across the board