message: we actually need arrow nightly for this
diff: -install.packages(c("DBI", "callr", "DBItest", "dbplyr", "nycflights13", "testthat", "arrow"), repos="https://cloud.r-project.org/")
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  +install.packages(c("DBI", "callr", "DBItest", "dbplyr", "nycflights13", "testthat"), repos="https://cloud.r-project.org/")
  +# arrow nightly for now
  +install.packages("arrow", repos = "https://arrow-r-nightly.s3.amazonaws.com")
  