New comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/27082#issuecomment-744483039

Comment:
Not necessary, it can go in this same PR. Specifying a pytest version isn't necessary (and is actually wrong), it will always use the one specified in `srcpkgs/`.

Try cleaning the directories and running `./xbps-src -Q pkg python3-matplotlib` to be sure.