nixpkgs/pkgs/development/libraries/haskell/semigroupoids/default.nix

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{ cabal, comonad, contravariant, semigroups, transformers }:
cabal.mkDerivation (self: {
pname = "semigroupoids";
version = "1.3.4";
sha256 = "0vnipjndbsldk5w1qw35i2zrd418rq13y10g0i33ylg1gwnsrqph";
buildDepends = [ comonad contravariant semigroups transformers ];
meta = {
homepage = "http://github.com/ekmett/semigroupoids";
description = "Haskell 98 semigroupoids: Category sans id";
license = self.stdenv.lib.licenses.bsd3;
platforms = self.ghc.meta.platforms;
};
})