let

mozillaOverlay =

import (builtins.fetchGit {

url = "https://github.com/mozilla/nixpkgs-mozilla.git";

rev = "57c8084c7ef41366993909c20491e359bbb90f54";

});

nixpkgs = import <nixpkgs> { overlays = [ mozillaOverlay ]; };

rust-nightly = with nixpkgs; ((rustChannelOf { date = "2020-10-23"; channel = "nightly"; }).rust.override {

targets = [ "wasm32-unknown-unknown" ];

});

in

with nixpkgs; pkgs.mkShell {

buildInputs = [

clang

cmake

pkg-config

rust-nightly

] ++ stdenv.lib.optionals stdenv.isDarwin [

darwin.apple_sdk.frameworks.Security

];

LIBCLANG_PATH = "${llvmPackages.libclang}/lib";

PROTOC = "${protobuf}/bin/protoc";

ROCKSDB_LIB_DIR = "${rocksdb}/lib";

}