message: Add pkgbuild
diff: local({
  - pkg <- c("DBI", "callr", "DBItest", "dbplyr", "nycflights13", "testthat", "bit64", "cpp11", "arrow", "covr", "remotes")
  + pkg <- c("DBI", "callr", "DBItest", "dbplyr", "nycflights13", "testthat", "bit64", "cpp11", "arrow", "covr", "pkgbuild", "remotes")
  if (.Platform$OS.type == "unix") {
  options(HTTPUserAgent = sprintf("R/4.1.0 R (4.1.0 %s)", paste(R.version$platform, R.version$arch, R.version$os)))
  