# What did I learn today
## 2022-01-20

* what are nixos containers and that when writing a flake for one one usually just writes "container" in place of hostname while declaring just one, so nixosConfigurations is supposed to really be always plural
* what exactly are self and super in nix overlays
* that an example of modern Perl with good practices for me could be nix-container.pl
* about recursiveUpdate
* that `nix search` now has the first argument be the flake registry
* that nvidia GPU in one of the laptops i use is now legacy for the driver in the more recent nixos channel
* i think i forgot things and maybe even imma edit, but better to post it now