{
  description = "API Client for Metaculus";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs = {
        nixpkgs.follows = "nixpkgs";
        flake-utils.follows = "flake-utils";
      };
    };
    crane = {
      url = "github:ipetkov/crane";
      inputs = {
        nixpkgs.follows = "nixpkgs";
      };
    };
  };

  outputs = { self, nixpkgs, flake-utils, rust-overlay, crane }:
    flake-utils.lib.eachDefaultSystem
      (system:
        let
          overlays = [ (import rust-overlay) ];
          pkgs = import nixpkgs {
            inherit system overlays;
          };
          rustToolchain = pkgs.pkgsBuildHost.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
          craneLib = (crane.mkLib pkgs).overrideToolchain rustToolchain;
          src = craneLib.cleanCargoSource ./.;
          nativeBuildInputs = with pkgs; [ rustToolchain ];
          buildInputs = with pkgs; [
            openapi-generator-cli
            ruby
          ] ++ lib.optionals stdenv.isDarwin [
            darwin.apple_sdk.frameworks.Security
            darwin.apple_sdk.frameworks.SystemConfiguration
          ];
        in
        with pkgs; {
          devShells.default = mkShell
            {
              inherit nativeBuildInputs buildInputs;
              RUST_SRC_PATH = "${rustToolchain}/lib/rustlib/src/rust/library";
            };
        }
      );
}