update README for Ubuntu 22.04

Nindaleth commented 8 months ago

Fix for #596

In addition to mentioning 22.04:

LunarG repo also provides packages for Ubuntu 16.04 and 18.04 (but I don't know if it's possible to compile and run OPG there so I didn't mention it to stay safe)
in around two months' time the repo will also provide packages for Ubuntu 24.04, but there's some period of time between Ubuntu LTS releasing and LunarG adding support for it in the repo, so again to stay on the safe side I'm not mentioning it explicitly yet.

I've manually verified the /etc/os-release and its VERSION_CODENAME to be available on all of the LTS versions mentioned above (16.04-22.04).

Nindaleth commented 8 months ago

Actually, I'm not sure what Linux Mint sets there. I'll need to check this, please don't merge just yet.

Nindaleth commented 8 months ago

Turns out that's what the UBUNTU_CODENAME variable is for - each Ubuntu derivative carries its own individual VERSION_CODENAME, but the (base) UBUNTU_CODENAME stays the same. I've verified that the code will also work on Linux Mint and Elementary OS which are some of the notable Ubuntu derivatives.

Try commented 8 months ago

Thanks for checking it! Merged

Try / OpenGothic

update README for Ubuntu 22.04 #597