flake.nix

{
  description = "A flake to support development of XBI via NixOS";

  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; };
        rustVersion = (pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml);
        rustPlatform = pkgs.makeRustPlatform {
          cargo = rustVersion;
          rustc = rustVersion;
        };
      in {
        devShell = pkgs.mkShell {
          LIBCLANG_PATH = "${pkgs.llvmPackages_11.libclang.lib}/lib";
          nativeBuildInputs = with pkgs; [ 
            bashInteractive 
            cmake 
            openssl 
            pkg-config 
            clang 
            llvmPackages_11.libclang 
            llvmPackages_11.bintools 
            taplo 
            protobuf
          ];
          buildInputs =
            [ (rustVersion.override { extensions = [ "rust-src" ]; }) ];
        };
  });
}