setoid
There are 3 repositories under setoid topic.
danilkolikov/setoids
Idris proofs for extensional equalities
ptek/skeletal-set
A Haskell implementation of a skeletal set - a set equipped with an equivalence relation which is usually different from equality. This makes it more strict regarding membership of elements than a set.
eadm/rational-setoid
Setoid for rational numbers written in Idris