The groupoids package

[Tags:bsd3, deprecated, library]
Deprecated. in favor of semigroupoids

This package has been absorbed into semigroupoids 4.0

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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.*), semigroupoids (>=4.0) [details]
License BSD3
Copyright Copyright (C) 2011-2013 Edward A. Kmett
Author Edward A. Kmett
Maintainer Edward A. Kmett <>
Category Control, Categories
Home page
Bug tracker
Source repository head: git clone git://
Uploaded Sun Oct 13 22:08:04 UTC 2013 by EdwardKmett
Distributions LTSHaskell:4.0, NixOS:4.0, Stackage:4.0
Downloads 13707 total (18 in the last 30 days)
1 []
Status Docs uploaded by user [build log]
Successful builds reported [all 1 reports]




Maintainer's Corner

For package maintainers and hackage trustees

Readme for groupoids

Readme for groupoids-4.0


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