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

  outputs = { self, nixpkgs, flake-utils, rust-overlay, ... }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        overlays = [ (import rust-overlay) ];
        pkgs = import nixpkgs { inherit system overlays; };
      in with pkgs; rec {
        devShells.default = mkShell rec {
          nativeBuildInputs = [
            (rust-bin.stable.latest.default.override {
              extensions = [ "rust-analyzer" "rust-src" ];
            })
            pkg-config
            openssl
          ];
          buildInputs = [];
          packages = [];
        };
      });
}