| Subject: | CLI::Osprey::Descriptive::Usage must implement a die method |
Internally, Getopt::Long::Descriptive may call $usage_class->die. Since CLI::Osprey::Descriptive::Usage doesn't implement it, that leads to a very confusing error.
I note that it's also missing other methods that GLD::Usage provides, like warn and maybe others.
Looking at GLD::Usage it seems to you _really_ should subclass this rather than reimplementing it, but if you don't then I think you have to implement every public method that GLD::Usage itself has.