diff --git a/config/x86_64-linux/config.mk b/config/x86_64-linux/config.mk
index dd3ef2c..41d2d06 100644
--- a/config/x86_64-linux/config.mk
+++ b/config/x86_64-linux/config.mk
@@ -12,5 +12,17 @@ DYNLOAD_SRCS = \
 	core/Python/dynload_shlib.c \
 
 
+# extensions: desired subsets
+include $(PROJECT_DIR)/profiles/pyexts/subsets.mk
+
+PYEXT_SHARED = \
+	$(PYEXT_SUBSET_SHARED_ANYOS_CORE) \
+	$(PYEXT_SUBSET_SHARED_ANYOS_AUDIO) \
+
+PYEXT_STATIC = \
+	$(PYEXT_SUBSET_STATIC_ANYOS_CORE) \
+	$(PYEXT_SUBSET_STATIC_ANYOS_AUDIO) \
+
+
 # strict shared object generation
 LDFLAGS_STRICT += -Wl,-no-undefined
diff --git a/config/x86_64-midipix/config.mk b/config/x86_64-midipix/config.mk
index 91f0e13..e9c672d 100644
--- a/config/x86_64-midipix/config.mk
+++ b/config/x86_64-midipix/config.mk
@@ -12,5 +12,15 @@ DYNLOAD_SRCS = \
 	core/Python/dynload_shlib.c \
 
 
+# extensions: desired subsets
+include $(PROJECT_DIR)/profiles/pyexts/subsets.mk
+
+PYEXT_SHARED = \
+	$(PYEXT_SUBSET_SHARED_ANYOS_CORE) \
+
+PYEXT_STATIC = \
+	$(PYEXT_SUBSET_STATIC_ANYOS_CORE) \
+
+
 # strict shared object generation
 LDFLAGS_STRICT += -Wl,-no-undefined