A universally unique identifier, or UUID, is a 128-bit number,
usually represented as 32 hexidecimal digits, in the format
123e4567-e89b-42d3-a456-426655440000. This package provides a UUID type, and
functions for reading, creating, randomly generating, inspecting and formatting
UUIDs.
There are several versions and variants of UUID. Currently, creating the nil UUID, version 3 and 4 UUIDs, and both variants are supported. However, all types can be understood and formatted.
Version 4 UUIDs have either 121 or 122 bits randomly allocated (depending on
variant). I am neither an expert in entropy nor elm/random, but I suspect the
Random.Generator does not provide the necessary entropy to fully utilise all
those bits of randomness. Still, it is probably more than sufficient for most
use cases.