{ mozillaOverlay ? import <mozillaOverlay>,
  rustManifest ? ./channel-rust-nightly.toml,
}:

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

with pkgs;

let
  rustChannelOfTargets = _channel: _date:
    (pkgs.lib.rustLib.fromManifestFile rustManifest {
      inherit (pkgs) stdenv fetchurl patchelf;
    }).rust;
  rust =
    rustChannelOfTargets "nightly" null;
  rustPlatform = pkgs.recurseIntoAttrs (pkgs.makeRustPlatform {
    rustc = rust;
    cargo = rust;
  });

  ticker-update = rustPlatform.buildRustPackage {
    name = "ticker-update";
    src = ./.;
    buildInputs = [
      pkg-config openssl postgresql.lib
      rust
    ];
    preBuild = "pushd ticker-update";
    postBuild = "popd";
    cargoSha256 = "0igr8k46yl5a89zjymp6914faawcvqza08h6l9pcplpikhbvls42";
  };
in {
  inherit
    rustPlatform
    ticker-update;
}