# in flake.nix
{
  description = "Nix Flake for rust projects";
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
    rust-overlay.url = "github:oxalica/rust-overlay";
  };
  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;
        {
          devShells.default = mkShell {
            buildInputs = [ 
              openssl
              rust-bin.stable.latest.default
              cargo
            ];
            PKG_CONFIG_PATH = "${openssl.dev}/lib/pkgconfig";
          };
        }
      );
}