Have a dedicated variable for the python sitelib, so it can be easily changed externally when building the system package.
diff -ru dionaea-793accd84432a77309fa8b81e1f5e9b5bd9ee7a3.orig/modules/python/dionaea/Makefile.am dionaea-793accd84432a77309fa8b81e1f5e9b5bd9ee7a3.new/modules/python/dionaea/Makefile.am
--- dionaea-793accd84432a77309fa8b81e1f5e9b5bd9ee7a3.orig/modules/python/dionaea/Makefile.am	2018-03-21 04:21:30.195354666 +0100
+++ dionaea-793accd84432a77309fa8b81e1f5e9b5bd9ee7a3.new/modules/python/dionaea/Makefile.am	2018-03-21 07:36:59.780218852 +0100
@@ -2,6 +2,9 @@
 
 AUTOMAKE_OPTIONS = foreign
 
+PYTHON_SITELIB=$(pkglibdir)"/python"
+
+
 PYSCRIPTS = blackhole.py
 PYSCRIPTS += emu_scripts/__init__.py
 PYSCRIPTS += emu_scripts/handler.py
@@ -83,11 +86,11 @@
 
 
 all: $(PYSCRIPTS)
-	
+
 
 install-data-am: all
 	for i in $(PYSCRIPTS); do \
-		location=$(DESTDIR)$(pkglibdir)"/python/dionaea/$$i"; \
+		location=$(DESTDIR)$(PYTHON_SITELIB)"/dionaea/$$i"; \
 		scriptdir=`dirname "$$location"`; \
 		if [ ! -d $$scriptdir ]; then \
 			$(mkinstalldirs) $$scriptdir; \