Looking at composer it appears there are 2 parsers for working with YAML
It doesn't really make sense to require both, so which should be set to be the sole parser, obviously the decision has to take into account PHP 7.2, 7.3, 7.4 compatibility for the v4.x branch
We're only using
It seems the other one was added in https://github.com/matomo-org/matomo/commit/d0c93e6fa77bdcfdab2d3cb66301a5144fd3addd maybe to avoid some conflict issue. Could be maybe removed by now.
Ah ok that makes sense. When I upgrade the current symfony packages to 4.4 (LTS) for the 4.x branch I'll remove that if it appears not to be required.