diff --git a/gen/examples/synth_shed/Makefile b/gen/examples/synth_shed/Makefile
index 95f73dc..b456855 100644
--- a/gen/examples/synth_shed/Makefile
+++ b/gen/examples/synth_shed/Makefile
@@ -1,11 +1,20 @@
-YML2_PATH=$(HOME)/src/pepbase/default/yml2
-YML2_PROC=$(YML2_PATH)/yml2proc $(YML2_OPTS)
-YML2_OPTS=--encoding=utf8
+include Makefile.conf
 
+YML2_FILE=py_module.yml2
+CC_FILE=py_module.cc
 
-py_module.cc : gen_pybind.ysl2 cid_grammar.yml2
-	$(YML2_PROC) -y $< cid_grammar.yml2
+
+.PHONY = yml cc
+
+all: yml cc
+
+yml:
+	$(GEN_CID_DIR)/gen_yml.py $(abspath config.json)
+
+cc : $(YML2_FILE)
+	$(YML2_PROC) -y $(GEN_CID_DIR)/gen_cc.ysl2 $(YML2_FILE)
 
 clean:
-	echo -f $(YML2_MARKERS)
+	rm -f $(YML2_FILE)
+	rm -f $(CC_FILE)
 
diff --git a/gen/examples/synth_shed/Makefile.conf b/gen/examples/synth_shed/Makefile.conf
new file mode 100644
index 0000000..00bfd37
--- /dev/null
+++ b/gen/examples/synth_shed/Makefile.conf
@@ -0,0 +1,5 @@
+YML2_PATH=$(HOME)/src/pepbase/default/yml2
+YML2_PROC=$(YML2_PATH)/yml2proc $(YML2_OPTS)
+YML2_OPTS=--encoding=utf8
+
+GEN_CID_DIR=../../gen_cid/
diff --git a/gen/examples/synth_shed/cid_grammar.yml2 b/gen/examples/synth_shed/cid_grammar.yml2
deleted file mode 100644
index de6cd82..0000000
--- a/gen/examples/synth_shed/cid_grammar.yml2
+++ /dev/null
@@ -1,65 +0,0 @@
-decl method @name;
-
-decl struct @name;
-decl field @name;
-
-decl enum @name;
-decl item @name;
-
-namespace pEp {
-
-method init_synth_shed {
-    return type="void";
-};
-
-method synth_create {
-    return type="synth_t *";
-    use name type="const char *";
-};
-
-method synth_set_osc_count {
-    return type="SYNTH_STATUS";
-    use synth type="synth_t *";
-    use osc_count type="int";
-};
-
-method tech_to_string {
-    return type="const char *";
-    use tech type="const tech_t *";
-};
-
-method filtertype_to_string {
-    return type="const char *";
-    use filt type="const filtertype_t *";
-};
-
-method play_synth {
-    return type="const char *";
-    use synth type="synth_t *";
-};
-
-struct _synth {
-    field model_name type="const char *";
-    field osc_count type="int";
-    field technolgy type="tech_t";
-    field filter type="filter_t";
-};
-
-struct _filter {
-    field technology type="tech_t";
-    field type type="filtertype_t";
-};
-
-enum _tech {
-    item ANALOG value=0;
-    item DIGITAL value=1;
-};
-
-enum _filtertype {
-    item HPF value=0;
-    item LPF value=1;
-    item BPF value=2;
-};
-
-
-}
diff --git a/gen/examples/synth_shed/config.json b/gen/examples/synth_shed/config.json
new file mode 100644
index 0000000..0f53e81
--- /dev/null
+++ b/gen/examples/synth_shed/config.json
@@ -0,0 +1,16 @@
+{
+    "module_name": "synth_shed",
+    "header_filename": "../../src/synth_shed/synth_shed.h",
+    "libclang_path": "/opt/local/libexec/llvm-9.0/lib/libclang.dylib",
+    "variables": [
+    ],
+    "functions": [
+        "init_synth_shed",
+        "synth_create",
+        "synth_set_osc_count",
+        "tech_to_string",
+        "update_identity",
+        "filtertype_to_string",
+        "play_synth"
+    ]
+}
diff --git a/gen/examples/synth_shed/gen_pybind.marker b/gen/examples/synth_shed/gen_pybind.marker
deleted file mode 100644
index 3cc762b..0000000
--- a/gen/examples/synth_shed/gen_pybind.marker
+++ /dev/null
@@ -1 +0,0 @@
-""
\ No newline at end of file
diff --git a/gen/examples/synth_shed/py_module.cc b/gen/examples/synth_shed/py_module.cc
deleted file mode 100644
index 51bc844..0000000
--- a/gen/examples/synth_shed/py_module.cc
+++ /dev/null
@@ -1,44 +0,0 @@
-#include <string>
-#include <iostream>
-#include <pybind11/pybind11.h>
-#include <pybind11/detail/common.h>
-#include "synth_shed.h"
-
-using namespace std;
-namespace py = pybind11;
-
-PYBIND11_MODULE(synth_shed, m) {
-
-    m.def("init_synth_shed", &init_synth_shed, "");
-    m.def("synth_create", &synth_create, "");
-    m.def("synth_set_osc_count", &synth_set_osc_count, "");
-    m.def("tech_to_string", &tech_to_string, "");
-    m.def("filtertype_to_string", &filtertype_to_string, "");
-    m.def("play_synth", &play_synth, "");
-
-    py::class_<_synth>(m, "_synth")
-        .def_readwrite("model_name", &::_synth::model_name)
-        .def_readwrite("osc_count", &::_synth::osc_count)
-        .def_readwrite("technolgy", &::_synth::technolgy)
-        .def_readwrite("filter", &::_synth::filter)
-    ;
-    
-    py::class_<_filter>(m, "_filter")
-        .def_readwrite("technology", &::_filter::technology)
-        .def_readwrite("type", &::_filter::type)
-    ;
-    
-
-    py::enum_<::_tech>(m, "_tech")
-        .value("ANALOG", ::ANALOG, "")
-        .value("DIGITAL", ::DIGITAL, "")
-    ;
-    
-    py::enum_<::_filtertype>(m, "_filtertype")
-        .value("HPF", ::HPF, "")
-        .value("LPF", ::LPF, "")
-        .value("BPF", ::BPF, "")
-    ;
-    
-
-}
diff --git a/gen/examples/synth_shed/synth_shed.h.cid.yml2 b/gen/examples/synth_shed/synth_shed.h.cid.yml2
deleted file mode 100644
index 3804762..0000000
--- a/gen/examples/synth_shed/synth_shed.h.cid.yml2
+++ /dev/null
@@ -1,53 +0,0 @@
-method init_synth_shed {
-    return type="void";
-};
-
-method synth_create {
-    return type="synth_t *";
-    use name type="const char *";
-};
-
-method synth_set_osc_count {
-    return type="SYNTH_STATUS";
-    use synth type="synth_t *";
-    use osc_count type="int";
-};
-
-method tech_to_string {
-    return type="const char *";
-    use tech type="const tech_t *";
-};
-
-method filtertype_to_string {
-    return type="const char *";
-    use filt type="const filtertype_t *";
-};
-
-method play_synth {
-    return type="const char *";
-    use synth type="synth_t *";
-};
-
-struct _synth {
-    field model_name type="const char *";
-    field osc_count type="int";
-    field technolgy type="tech_t";
-    field filter type="filter_t";
-};
-
-struct _filter {
-    field technology type="tech_t";
-    field type type="filtertype_t";
-};
-
-enum _tech {
-    item ANALOG value=0;
-    item DIGITAL value=1;
-};
-
-enum _filtertype {
-    item HPF value=0;
-    item LPF value=1;
-    item BPF value=2;
-};
-
diff --git a/gen/examples/synth_shed/synth_shed.py b/gen/examples/synth_shed/synth_shed.py
deleted file mode 100755
index 5782293..0000000
--- a/gen/examples/synth_shed/synth_shed.py
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-
-import gen_cid
-from gen_cid import utils
-
-def main():
-    vars = []
-    funcs = []
-    funcs.append("init_synth_shed")
-    funcs.append("synth_create")
-    funcs.append("synth_set_osc_count")
-    funcs.append("tech_to_string")
-    funcs.append("update_identity")
-    funcs.append("filtertype_to_string")
-    funcs.append("play_synth")
-
-    header_filename = "../../src/synth_shed/synth_shed.h"
-    libclang_path = "/opt/local/libexec/llvm-9.0/lib/libclang.dylib"
-
-    cidtools = gen_cid.CIDTools(libclang_path, header_filename, "synth_shed")
-    header = cidtools.extract(vars, funcs, debug_ast=True, debug_cid=True, debug_yml=True)
-
-    print(header["yml"])
-    utils.write_string(header["yml"], "./" + "/" + header["filename"] + ".cid.yml2", )
-
-
-
-if __name__ == "__main__":
-    main()