option package:cabal-gild

The command line options the correspond to the flags.
Represents a value that may or may not be present. Isomorphic to Maybe. Useful to distinguish between a value not being given and a value happening to be the same as the default.
This exception is thrown when an option is specified more than once.
This exception is thrown when a command line option is invalid.
This exception is thrown when a command line option is not known.