{ pkgs ? import <nixpkgs> { } }:
let
  gitignoreSrc = pkgs.fetchFromGitHub {
    owner = "hercules-ci";
    repo = "gitignore";
    rev = "c4662e662462e7bf3c2a968483478a665d00e717";
    sha256 = "1npnx0h6bd0d7ql93ka7azhj40zgjp815fw2r6smg8ch9p7mzdlx";
  };
  inherit (import gitignoreSrc { inherit (pkgs) lib; }) gitignoreSource;
in
pkgs.buildGoModule {
  name = "bang-evaluator";

  src = gitignoreSource ./.; # FIXME: reproducibility

  subPackages = [ "." ];

  vendorSha256 = "11r1l5lcdfm3wymrkbddl5khpjmr30jln31l40mfyyy9msnqayf3";

  preBuild = ''go generate ./...'';

  doCheck = false; # no tests (yet?)

  meta.license = pkgs.lib.licenses.mit;
}