libpq: 18.0 -> 18.1 (#460645)

stdenv.mkDerivation (finalAttrs: {

  pname = "libpq";

  version = "18.0";

  version = "18.1";

  src = fetchFromGitHub {

    owner = "postgres";

    repo = "postgres";

    # rev, not tag, on purpose: see generic.nix.

    rev = "refs/tags/REL_18_0";

    hash = "sha256-xA6gbJe4tIV9bYRFrdI4Rfy20ZwTkvyyjt7ZxvCFEec=";

    # TODO: Move back to tag, when they appear upstream:

    # rev = "refs/tags/REL_18_1";

    rev = "4b324845ba5d24682b9b3708a769f00d160afbd7";

    hash = "sha256-cZA2hWtr5RwsUrRWkvl/yvUzFPSfdtpyAKGXfrVUr0g=";

  };

  __structuredAttrs = true;