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{ cabal, tagged, transformers, transformersCompat }:
cabal.mkDerivation (self: {
pname = "contravariant";
version = "0.4";
sha256 = "1nqslc9vcx6v6c33fn7mvb1xhr33yl3ja92p788zx8z1drx9cqc3";
buildDepends = [ tagged transformers transformersCompat ];
meta = {
homepage = "http://github.com/ekmett/contravariant/";
description = "Haskell 98 contravariant functors";
license = self.stdenv.lib.licenses.bsd3;
platforms = self.ghc.meta.platforms;
};
})
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