groupoids: Haskell 98 Groupoids

[ bsd3, categories, control, deprecated, library ] [ Propose Tags ]
Deprecated. in favor of semigroupoids

Haskell 98 Groupoids

[Skip to Readme]
Versions 0.1, 0.1.1,,, 0.2, 0.2.1,,, 3.0, 3.0.1,,, 4.0
Change log CHANGELOG.markdown
Dependencies base (>=4 && <4.5 || >=4.6 && <5), semigroupoids (>=3) [details]
License BSD-3-Clause
Copyright Copyright (C) 2011-2013 Edward A. Kmett
Author Edward A. Kmett
Maintainer Edward A. Kmett <>
Revised Revision 1 made by AdamBergmark at Thu May 28 08:19:01 UTC 2015
Category Control, Categories
Home page
Bug tracker
Source repo head: git clone git://
Uploaded by EdwardKmett at Sun Jan 6 23:33:02 UTC 2013
Distributions NixOS:4.0
Downloads 15908 total (37 in the last 30 days)
Rating 2.0 (votes: 1) [estimated by rule of succession]
Your Rating
  • λ
  • λ
  • λ
Status Docs uploaded by user
Build status unknown [no reports yet]
Hackage Matrix CI




Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.

Maintainer's Corner

For package maintainers and hackage trustees

Readme for groupoids-3.0.1

[back to package description]


Build Status

A groupoid is a category where every arrow has an inverse. This package provides them for Haskell.

Contact Information

Contributions and bug reports are welcome!

Please feel free to contact me through github or on the #haskell IRC channel on

-Edward Kmett