Make python scripts find some util folders

Tested in venv and conda

Makefile

@@ -89,6 +89,7 @@ export
 ## @section Conda
 conda: environment.yml
 	conda env create -f environment.yml
+	sed 's,ROOT_PATH,$(shell pwd),g' x_heep_pythonpath.pth > `conda run -n core-v-mini-mcu python -c 'import sysconfig; print(sysconfig.get_paths()["purelib"])'`/x_heep_pythonpath.pth
 
 environment.yml: python-requirements.txt
 	util/python-requirements2conda.sh

Makefile.venv

@@ -227,6 +227,7 @@ endif
 $(VENV):
 	$(PY) -m venv $(VENVDIR)
 	$(VENV)/python -m pip install --upgrade pip setuptools wheel
+	sed 's,ROOT_PATH,$(shell pwd),g' x_heep_pythonpath.pth > `$(VENV)/python -c 'import sysconfig; print(sysconfig.get_paths()["purelib"])'`/x_heep_pythonpath.pth
 
 $(VENV)/$(MARKER): $(VENVDEPENDS) | $(VENV)
 ifneq ($(strip $(REQUIREMENTS_TXT)),)

x_heep_pythonpath.pth

@@ -0,0 +1 @@
+import sys, os; sys.path.insert(0, os.path.abspath("ROOT_PATH/util")); sys.path.insert(0, os.path.abspath("ROOT_PATH/hw/vendor/pulp_platform_register_interface/vendor/lowrisc_opentitan/util"))