message: Restore skip_if_not_installed()
diff: # this tests both retrieval and scans
  test_that("we can roundtrip an integer64", {
  + skip_if_not_installed("bit64")
  +
  con <- dbConnect(duckdb::duckdb(bigint="integer64"))
  on.exit(dbDisconnect(con, shutdown = TRUE))
  df <- data.frame(a = bit64::as.integer64(42), b = bit64::as.integer64(-42), c = bit64::as.integer64(NA))
  