Bool -package:universum

The Bool type and related functions.
Basic operations on type-level Booleans.
Convenient commonly used and very helpful functions to work with Bool and also with monads.
A Boolean. Represented in a configuration file as on or off, true or false (case sensitive).
Bool                                     ~  Bool
TextShow instance for Bool. Since: 2
Booleans. Note that the operations from this module conflict with Data.Type.Bool.
Can be an alternative to the enumset package.
Boolean value:
bool1 = true
bool2 = false
The Bool type and related functions.
Basic operations on type-level Booleans.