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#include <tuple>
#include <vector>
#include "libexpr/eval.hh"
namespace nix {
struct RegisterPrimOp {
using PrimOps = std::vector<std::tuple<std::string, size_t, PrimOpFun> >;
static PrimOps* primOps;
/* You can register a constant by passing an arity of 0. fun
will get called during EvalState initialization, so there
may be primops not yet added and builtins is not yet sorted. */
RegisterPrimOp(const std::string& name, size_t arity, PrimOpFun fun);
};
} // namespace nix
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