{ cabal, multirec }: cabal.mkDerivation (self: { pname = "zipper"; version = "0.4.2"; sha256 = "1r8092amq5w9gl5szycl1r7wx87xnmkcapdzcwfa4c3pvxrhjy44"; buildDepends = [ multirec ]; meta = { homepage = "http://www.cs.uu.nl/wiki/GenericProgramming/Multirec"; description = "Generic zipper for families of recursive datatypes"; license = self.stdenv.lib.licenses.bsd3; platforms = self.ghc.meta.platforms; maintainers = [ self.stdenv.lib.maintainers.andres ]; }; })