diff --git a/py/deadnv.mk b/py/deadnv.mk
new file mode 100644
index 000000000..f95b8799a
--- /dev/null
+++ b/py/deadnv.mk
@@ -0,0 +1,83 @@
+ifneq ($(lastword a b),b)
+$(error These Makefiles require make 3.81 or newer)
+endif
+
+# Set TOP to be the path to get from the current directory (where make was
+# invoked) to the top of the tree. $(lastword $(MAKEFILE_LIST)) returns
+# the name of this makefile relative to where make was invoked.
+#
+# We assume that this file is in the py directory so we use $(dir ) twice
+# to get to the top of the tree.
+
+THIS_MAKEFILE := $(lastword $(MAKEFILE_LIST))
+TOP := $(patsubst %/py/deadnv.mk,%,$(THIS_MAKEFILE))
+
+# Turn on increased build verbosity by defining BUILD_VERBOSE in your main
+# Makefile or in your environment. You can also use V=1 on the make command
+# line.
+
+ifeq ("$(origin V)", "command line")
+BUILD_VERBOSE=$(V)
+endif
+ifndef BUILD_VERBOSE
+$(info Use make V=1 or set BUILD_VERBOSE in your environment to increase build verbosity.)
+BUILD_VERBOSE = 0
+endif
+ifeq ($(BUILD_VERBOSE),0)
+Q = @
+else
+Q =
+endif
+
+include $(DEVKITARM)/ds_rules
+
+# default settings; can be overridden in main Makefile
+
+PY_SRC ?= $(TOP)/py
+BUILD ?= build
+
+RM = rm
+ECHO = @echo
+CP = cp
+MKDIR = mkdir
+SED = sed
+CAT = cat
+TOUCH = touch
+PYTHON = python3
+ZIP = zip
+
+# Define the devkitARM toolchain paths
+DEVKITARM ?= DEVKITARM
+CROSS_COMPILE = $(DEVKITARM)/bin/arm-none-eabi-
+
+AS = $(CROSS_COMPILE)as
+CC = $(CROSS_COMPILE)gcc
+CPP = $(CC) -E
+CXX = $(CROSS_COMPILE)g++
+GDB = $(CROSS_COMPILE)gdb
+LD = $(CROSS_COMPILE)ld
+OBJCOPY = $(CROSS_COMPILE)objcopy
+SIZE = $(CROSS_COMPILE)size
+STRIP = $(CROSS_COMPILE)strip
+AR = $(CROSS_COMPILE)ar
+WINDRES = $(CROSS_COMPILE)windres
+
+MAKE_MANIFEST = $(PYTHON) $(TOP)/tools/makemanifest.py
+MAKE_FROZEN = $(PYTHON) $(TOP)/tools/make-frozen.py
+MPY_TOOL = $(PYTHON) $(TOP)/tools/mpy-tool.py
+
+MPY_LIB_SUBMODULE_DIR = $(TOP)/lib/micropython-lib
+MPY_LIB_DIR = $(MPY_LIB_SUBMODULE_DIR)
+
+ifeq ($(MICROPY_MPYCROSS),)
+MICROPY_MPYCROSS = $(TOP)/mpy-cross/build/mpy-cross
+MICROPY_MPYCROSS_DEPENDENCY = $(MICROPY_MPYCROSS)
+endif
+
+all:
+.PHONY: all
+
+.DELETE_ON_ERROR:
+
+MKENV_INCLUDED = 1
+