Make headless=True run xvbf

[neverix]

It doesn't do anything anyway and there's no way to turn it on so why not

[pep8speaks]

Hello @neverix! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2022-06-29 18:13:39 UTC

[Miffyli]

Hey! Thank you for this: this actually was a thing on my todo list but deep in the "good to haves" list 😅 . I will definitely test this out. Just a small request: change from full/absolute path to just xvfb-run command, as sometimes people might the commands available somewhere else, and then they can always add things to PATH if xvfb-run is not in PATH by default.

[neverix]

test this out

It is completely untested, I'm still struggling to install MineRL locally

change from full/absolute path

True, I wrote that thinking psutil couldn't read from PATH

[Miffyli]

Cheers, I will merge this once it is fully fleshed out (e.g., you can pass the "headless" argument from gym.make all down here or so), so that people can use it. In current form it not set-able, but that should not be a big work :)

Btw please first raise issues or discuss changes on Discord before making PRs, and only make PRs when you are confident it could be merged. This is to reduce spam for everyone included.

[neverix]

Yeah, this was kind of a joke when I first made the PR. I did not expect this to actually be useful. Will note for future contributions