vec_as_names_legacy(names, prefix = "V", sep = "")

if (rlang::is_installed("tibble")) {

library(tibble)

# Names repair is turned off by default in tibble:
try(tibble(a = 1, a = 2))

# You can turn it on by supplying a repair method:
tibble(a = 1, a = 2, .name_repair = "universal")

# If you prefer the legacy method, use `vec_as_names_legacy()`:
tibble(a = 1, a = 2, .name_repair = vec_as_names_legacy)

}