name: ghc-typelits-natnormalise version: 0.1 synopsis: GHC typechecker plugin for types of kind GHC.TypeLits.Nat description: A type checker plugin for GHC that can solve /equalities/ of types of kind 'GHC.TypeLits.Nat', where these types are either: . * Type-level naturals * Type variables * Applications of the arithmetic expressions @(+,-,*,^)@. . It solves these equalities by normalising them to /sort-of/ 'GHC.TypeLits.Normalise.SOP.SOP' (Sum-of-Products) form, and then perform a simple syntactic equality. . For example, this solver can prove the equality between: . @ (x + 2)^(y + 2) @ . and . @ 4*x*(2 + x)^y + 4*(2 + x)^y + (2 + x)^y*x^2 @ . Because the latter is actually the 'GHC.TypeLits.Normalise.SOP.SOP' normal form of the former. . To use the plugin, add the . @ OPTIONS_GHC -fplugin GHC.TypeLits.Normalise @ . Pragma to the header of your file. homepage: http://www.clash-lang.org/ bug-reports: http://github.com/christiaanb/ghc-typelits-natnormalise/issues license: BSD2 license-file: LICENSE author: Christiaan Baaij maintainer: christiaan.baaij@gmail.com copyright: Copyright © 2015 University of Twente category: Type System build-type: Simple extra-source-files: README.md CHANGELOG.md cabal-version: >=1.10 source-repository head type: git location: https://github.com/christiaanb/ghc-typelits-natnormalise.git library exposed-modules: GHC.TypeLits.Normalise, GHC.TypeLits.Normalise.SOP, GHC.TypeLits.Normalise.Unify Other-Modules: GHC.Type.Instances build-depends: base >=4.8 && <5, ghc >=7.10 && <7.12 hs-source-dirs: src default-language: Haskell2010 ghc-options: -Wall test-suite test-ghc-tynat-normalise type: exitcode-stdio-1.0 main-is: Tests.hs build-depends: base >=4.8 && <4.9, ghc-typelits-natnormalise >= 0.1, tasty >= 0.10, tasty-hunit >= 0.9 hs-source-dirs: tests default-language: Haskell2010 ghc-options: -O0 -dcore-lint