export PATH=$PATH:/mypath1:/mypath2 in ~/.profile. Means “add :/mypath1:/mypath2 to what is already in $PATH.” If you need the entire system to be aware, set or update it in /etc/environment with PATH=...

Btw plastic bottles are also bad for you. BPA was the worst endocrine suppressor of them all but, make no mistake, all plastics are endocrine suppressors. BPA just wound up being the scapegoat. Microplastics in our blood aside, whatever you put into plastic will end up being a vehicle for toxins. While eating/drinking from plastic is really bad, one doesn’t usually appreciate the surface area of our skin.

Plastic is only safe for surfaces that we rarely interact with.

The language itself has no type enforcement, the type checking is implemented within nixpkgs. This might seem like pedantry, but it really matters for things like LSPs (text editor autocomplete). I think that’s what scares some people off: it’s like OG Minecraft, you need to have the wiki/search.nixos.org open while you are doing your editing.

That being said, the type checking goes much deeper than what the windows registry does - e.g. it won’t allow you to enable conflicting services - like grub and systemd-boot - at the same time.