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, this 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:


Versions0.1, 0.1.1, 0.1.2, 0.2, 0.2.1, 0.3, 0.4, 0.4.1, 0.4.2, 0.5
Change logNone available
Dependenciesbase (>=3.0 && <4.6), groupoids (>=0.1 && <0.3), semigroupoids (>=1.0 && <1.4) [details]
CopyrightCopyright (C) 2012 Gábor Lehel
AuthorGábor Lehel
MaintainerGábor Lehel <>
CategoryType System
Home page
Source repositoryhead: git clone git://
UploadedFri Jun 15 20:56:47 UTC 2012 by GaborLehel
DistributionsLTSHaskell:0.5, NixOS:0.5, Stackage:0.5
Downloads6138 total (19 in last 30 days)
0 []
StatusDocs not available [build log]
All reported builds failed as of 2015-11-25 [all 4 reports]



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