Make primop registration pluggable

This way we don't have to put all primops in one giant file.

1 files changed, 15 insertions, 0 deletions

diff --git a/src/libexpr/primops.hh b/src/libexpr/primops.hh
new file mode 100644
index 0000000000..39d23b04a5
--- /dev/null
+++ b/src/libexpr/primops.hh
@@ -0,0 +1,15 @@
+#include "eval.hh"
+
+#include <tuple>
+#include <vector>
+
+namespace nix {
+
+struct RegisterPrimOp
+{
+    typedef std::vector<std::tuple<std::string, size_t, PrimOpFun>> PrimOps;
+    static PrimOps * primOps;
+    RegisterPrimOp(std::string name, size_t arity, PrimOpFun fun);
+};
+
+}