var sortedPerlVersions = perlVersions
	.Select(x => new { full = x, parts = x.Split('.').Select(n => Convert.ToInt32(n)).ToArray() })
	.OrderBy(x => x.parts[0]).ThenBy(x => x.parts[1]).ThenBy(x => x.parts[2])
	.Select(x => x.full)
	.ToList();