nixpkgs/pkgs/development/libraries/protobuf/3.12.nix

{ callPackage, ... }:

callPackage ./generic-v3.nix {
  version = "3.12.4";
  sha256 = "1gzvnd0g5hmx5ln39w7p4z4qphw87ksgsa1fgbpvi8d0asmwab2p";
}