message: unbreaking linux :/
diff: -type <- "both"
  -if (.Platform$OS.type == "windows") {
  +install_args <- list(
  + pkgs=c("DBI", "DBItest", "testthat", "dbplyr", "RSQLite", "callr", "nycflights13"),
  + repos=c("http://cran.rstudio.com/"))
  +
  +if (.Platform$OS.type == "unix") {
  message("Forcing binary package installs on Windows :/")
  - type <- "binary"
  + install_args[['type']] <- "binary"
  }
  -install.packages(c("DBI", "DBItest", "testthat", "dbplyr", "RSQLite", "callr", "nycflights13"), repos=c("http://cran.rstudio.com/"), type=type)
  +
  +do.call(install.packages, install_args)
  