{ description = "Breadth-first exhaustive `zip` for repeatable iterators." inputs = { flake-utils.url = "github:numtide/flake-utils"; naersk.url = "github:nmattia/naersk"; nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable"; }; outputs = { flake-utils, naersk, nixpkgs, self }: flake-utils.lib.eachDefaultSystem (system: let pkgs = (import nixpkgs) { inherit system; }; naersk' = pkgs.callPackage naersk {}; in { defaultPackage = naersk'.buildPackage { src = ./.; }; devShell = pkgs.mkShell { nativeBuildInputs = with pkgs; [ rustc cargo ]; }; } ); }