Updating dependencies of a Nix flake

I just realized today that I haven’t updated VSCode on my Mac in almost a year. It turns out that if you install any program through Nix, its version is determined by the version of nixpkgs in your flake.lock file.

To update nixpkgs and get newer versions of all your programs, cd into the directory with your flake and run nix flake update. It’s the pacman -Syu of nix!