deb_control_files:
- control
- md5sums
deb_fields:
Architecture: amd64
Depends: libghc-base-dev-4.18.2.1-8e81e, libghc-ghc-dev-9.6.6-a3f75, libghc-ghc-prim-dev-0.10.0-e2193,
libghc-ghc-tcplugins-extra-dev-0.4.6-965f8, libghc-ghc-typelits-natnormalise-dev-0.7.10-10a39,
libghc-template-haskell-dev-2.20.0.0-54f98, libghc-transformers-dev-0.6.1.0-5335d,
libc6 (>= 2.2.5), libgmp10 (>= 2:6.3.0+dfsg)
Description: |-
Derive KnownNat constraints from other KnownNat constraints
A type checker plugin for GHC that can derive "complex" KnownNat
constraints from other simple/variable KnownNat constraints. i.e. without
this plugin, you must have both a KnownNat n and a KnownNat (n+2)
constraint in the type signature of the following function:
.
f :: forall n . (KnownNat n, KnownNat (n+2)) => Proxy n -> Integer
f _ = natVal (Proxy :: Proxy n) + natVal (Proxy :: Proxy (n+2))
.
Using the plugin you can omit the KnownNat (n+2) constraint:
.
f :: forall n . KnownNat n => Proxy n -> Integer
f _ = natVal (Proxy :: Proxy n) + natVal (Proxy :: Proxy (n+2))
.
The plugin can derive KnownNat constraints for types consisting of:
.
* Type variables, when there is a corresponding KnownNat constraint
.
* Type-level naturals
.
* Applications of the arithmetic expression: +,-,*,^
.
* Type functions, when there is either:
.
1. a matching given KnownNat constraint; or
.
2. a corresponding KnownNat<N> instance for the type function
.
To use the plugin, add the
.
OPTIONS_GHC -fplugin GHC.TypeLits.KnownNat.Solver
.
Pragma to the header of your file.
.
This package provides a library for the Haskell programming language.
See http://www.haskell.org/ for more information on Haskell.
Ghc-Package: ghc-typelits-knownnat-0.7.12-L6k1xXRX5f96li4HFEiwOp
Homepage: https://clash-lang.org/
Installed-Size: '524'
Maintainer: Debian Haskell Group <pkg-haskell-maintainers@lists.alioth.debian.org>
Package: libghc-ghc-typelits-knownnat-dev
Priority: optional
Provides: libghc-ghc-typelits-knownnat-dev-0.7.12-a237a
Section: haskell
Source: haskell-ghc-typelits-knownnat (0.7.12-1)
Version: 0.7.12-1+b1
srcpkg_name: haskell-ghc-typelits-knownnat
srcpkg_version: 0.7.12-1