$ sh <(curl -L https://nixos.org/nix/install)
# Ref: https://nixos.org/download.html#nix-install-macos
$ nix-channel --update
$ nix-collect-garbage -d
$ sudo nix-store --verify --repair --check-contents
$ nix-build -E 'with import <nixpkgs> { }; callPackage ./package.nix { }'