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type-level: Type-level programming library
DESCRIPTION
 This library permits performing computations on the type-level. Type-level
 functions are implemented using functional dependencies of multi
 parameter type classes.
 To date, Booleans and Numerals (Naturals and Positives) are
 supported. With regard to Numerals, there is support for common
 arithmetic operations (addition, substraction, multiplication,
 division, exponientation, logarithm, maximum, comparison, GCD)
 over natural numbers (using a decimal representation to make
 compile-time errors friendlier).
 Although making use of type-level computations might seem devious and
 obfuscated at first sight, it is indeed useful in practice to implement
 lightweight dependent types such us number-parameterized types (e.g. an array
 type parameterized by the array's size or a modular group type Zn
 parameterized by the modulus).
 Here is a tutorial on type-level numerals and how to use them to
implement numerically-parameterized vectors: https://forsyde.ict.kth.se/trac/wiki/ForSyDe/Haskell/ForSyDeTutorial#FSVec
DEPENDENCIES
 type-level depends on GHC (due to the use of Multiparameter Type Classes and
 infix type constructors) and Template Haskell
INSTALLATION
to install globally, for the whole system (requires admin permissions):
$ ./Setup.hs configure
$ ./Setup.hs build
$ ./Setup.hs haddock # generate documentation, optional,
                     # requires Haddock > 2.0 due to the use of TH
$ ./Setup.hs install
to install locally and just for your own user:
$ ./Setup.hs configure --prefix=The/selected/local/directory
$ ./Setup.hs build
$ ./Setup.hs haddock  # generate documentation, optional,
                      # requires Haddock > 2.0 due to the use of TH
$ ./Setup.hs install --user