Consider a first_exists() approach for finding the tz directory?

[MichaelChirico]

lubridate/R/tzdir.R

Lines 55 to 61 in e54b612

	tzdirs <- tzdirs[file.exists(tzdirs)]
	if (length(tzdirs)) {
	tzdirs[[1]]
	} else {
	NULL
	}
	}

Happened to notice this helper has a lot of overlap with lintr:::find_config().

Recently tested that looping over the potential locations & returning the first found is much faster than checking all of them:

r-lib/lintr#2204

Would that be preferable here as well?

[vspinu]

Indeed, it does not make sense to check all of them.