The type-eq package

[Tags:bsd3, library]

This package provides types and combinators to store and manipulate evidence of equality between types.

To take advantage of kind-polymorphism when it is available but not require it, it is split into the following primary modules:

Support for kind-polymorphism first appeared with GHC 7.4, but because it is too buggy to be practical, it will only be enabled with GHC 7.6.

Major required extensions: GADTs, TypeFamilies (for ~), Rank2Types, TypeOperators

Optional extensions: PolyKinds (GHC 7.6+)

Minimum GHC: 6.10

Related packages:


Versions 0.1, 0.1.1, 0.1.2, 0.2, 0.2.1, 0.3, 0.4, 0.4.1, 0.4.2, 0.5
Dependencies base (>=3.0 && <4.6), groupoids (>=0.1 && <0.3), semigroupoids (>=1.0 && <1.4) [details]
License BSD3
Copyright Copyright (C) 2012 Gábor Lehel
Author Gábor Lehel
Maintainer Gábor Lehel <>
Category Type System
Home page
Source repository head: git clone git://
Uploaded Wed Jul 4 14:55:40 UTC 2012 by GaborLehel
Distributions LTSHaskell:0.5, NixOS:0.5, Tumbleweed:0.5
Downloads 6667 total (40 in the last 30 days)
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Status Docs uploaded by user
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