groupoids alternatives and similar packages

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profunctors

9.3 4.3 groupoids VS profunctors

Haskell 98 Profunctors
hyperfunctions

7.5 0.0 groupoids VS hyperfunctions

playing with hyperfunctions

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dualizer

7.3 0.0 groupoids VS dualizer

Delete half (minus ε) of your Haskell code!
mmark-cli

5.4 6.2 groupoids VS mmark-cli

Command line interface to the MMark markdown processor
representable-profunctors

4.4 0.0 groupoids VS representable-profunctors

Representable profunctors
profunctor-extras

3.1 0.0 groupoids VS profunctor-extras

Profunctor composition