let
pkgs = import <nixpkgs> {};
overlay = pkgs.fetchFromGitHub {
owner = "mozilla";
repo = "nixpkgs-mozilla";
rev = "b1001ed670666ca4ce1c1b064481f88694315c1d";
sha256 = "1hpig8z4pzdwc2vazr6hg7qyxllbgznsaivaigjnmrdszlxz55zz";
};
in
import overlay