Make it work at PSI

tools/makefile.conf

 SELF_DIR := $(dir $(lastword $(MAKEFILE_LIST)))
 
-PYTHON=python
-PEP8=pep8
+UNAME_S := $(shell uname -s)
+ifeq ($(UNAME_S),Linux)
+    ifneq ("$(wildcard /etc/redhat-release)","")
+        PYTHON=PYTHONPATH=$$PYTHONPATH:/scratch/ulrich/pymule/tools/ /afs/psi.ch/sys/psi.x86_64_slp6/Programming/psi-python27/4.4.0/bin/python
+        PEP8=$(PYTHON) /afs/psi.ch/sys/psi.x86_64_slp6/Programming/psi-python27/4.4.0/bin/pep8
+        JUPYTERCONV=$(PYTHON) /afs/psi.ch/sys/psi.x86_64_slp6/Programming/psi-python27/4.4.0/bin/jupyter-nbconvert
+    else
+        PYTHON=python
+        PEP8=pep8
+        JUPYTERCONV=jupyter nbconvert
+    endif
+else
+
+endif
 PY2NB = $(PYTHON) $(SELF_DIR)/py2nb.py -x
-JUPYTERCONV=jupyter nbconvert
 
 PEP8FLAGS=--ignore=E265,E266,W503,E121,E123,E126,E226,E24,E704,W503