{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    rust-overlay.url = "github:oxalica/rust-overlay";
    flake-utils.url = "github:numtide/flake-utils";
  };
  outputs = { self, nixpkgs, rust-overlay, flake-utils, ... }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        overlays = [ (import rust-overlay) ];
        pkgs = import nixpkgs { inherit system overlays; };
        rustStable = pkgs.rust-bin.stable.latest.minimal.override {
          extensions = [ "rust-src" "clippy" "rustfmt" ];
        };
      in with pkgs; {
        devShell = mkShell {
          buildInputs = [ openssl pkg-config rustStable cargo-release ];
        };
      });
}