Well documentation is still not great. But I can deal with it.

The first step is to really understand how nix works and how nix-shell -p works.

Then probably know that autoPatchelfHook exists

And sth. You have to watch out for if you install sth. With a daemon or a service you need to enable it additionally to the installation.

So for example for open-iscsi you need to enable the service.open-iscsi = enable so it can work.

Flakes are still a nogo for me. I don't understand them and I don't want to deal with them until I get the rest into my head.