Deriving Handler for Shrinkable#75
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Deriving Handler for
ShrinkableThis file defines a handler which automatically derives
Shrinkableinstances for inductive types.The derived shrinker for a value
C x₁ ... xₙproduces:xᵢwhose type equals the inductive type itself (these are strictly smaller subterms).xᵢ, shrink it via itsShrinkableinstance and reconstruct the constructor with the shrunk value, holding all other arguments fixed.Several examples are given in the added tests.