diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..6e88216
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,17 @@
+let
+  moz_overlay = import (builtins.fetchTarball https://github.com/mozilla/nixpkgs-mozilla/archive/master.tar.gz);
+  nixpkgs = import <nixpkgs> { overlays = [ moz_overlay ]; };
+in
+  with nixpkgs;
+  stdenv.mkDerivation {
+    name = "moz_overlay_shell";
+    buildInputs = [
+      # to use the latest nightly:
+      nixpkgs.latest.rustChannels.nightly.rust
+      nixpkgs.libiconv
+      nixpkgs.protobuf
+    ]
+    ++ lib.optionals stdenv.isDarwin [darwin.apple_sdk.frameworks.Security];
+
+    PROTOC = "${pkgs.protobuf}/bin/protoc";
+  }
\ No newline at end of file