The syb-extras package

[Tags:bsd3, library]

Higher order versions of the Scrap Your Boilerplate classes to ease programming with polymorphic recursion and reduce UndecidableInstances

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Versions 0.1, 0.2.0, 0.2.1,, 0.2.2,, 0.2.3, 0.2.4,, 0.3
Dependencies base (>=4 && <4.7), eq (==3.*), prelude-extras (>=0.1 && <1) [details]
License BSD3
Copyright Copyright (C) 2011 Edward A. Kmett
Author Edward A. Kmett
Maintainer Edward A. Kmett <>
Category Polymorphism, Combinators, Generic
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Source repository head: git clone git://
Uploaded Mon Apr 8 14:20:03 UTC 2013 by EdwardKmett
Updated Sat May 28 06:16:59 UTC 2016 by AdamBergmark to revision 2
Distributions NixOS:0.3
Downloads 2052 total (4 in the last 30 days)
1 []
Status Docs uploaded by user
Build status unknown [no reports yet]




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For package maintainers and hackage trustees

Readme for syb-extras

Readme for syb-extras-


Build Status

This permits the construction of higher-rank Data instances.

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