Help finding a nixpkgs for the `security` CLI on Darwin machines

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Is security one of those things that will need to be an “impure” package, e.g., nixpkgs/pkgs/os-specific/darwin/impure-cmds/default.nix at f771eb401a46846c1aebd20552521b233dd7e18b · NixOS/nixpkgs · GitHub?