Index: simulator/plugins/__init__.py
===================================================================
diff -u -rc13dc6ba2410716a3f1c446e564085aeb9114a60 -rf921975179b1c1ad61d841b9db5976c00432fdcc
--- simulator/plugins/__init__.py	(.../__init__.py)	(revision c13dc6ba2410716a3f1c446e564085aeb9114a60)
+++ simulator/plugins/__init__.py	(.../__init__.py)	(revision f921975179b1c1ad61d841b9db5976c00432fdcc)
@@ -1,7 +1,12 @@
-from .ultrafiltration.loader import Ultrafiltration
-from .inlinebloodpressures.loader import InlineBloodPressures
-from .salinebolus.loader import SalineBolus
-from .treatmentstates.loader import TreatmentStates
-from .treatmentranges.loader import TreatmentRanges
-from .heparin.loader import Heparin
+"""
+the package init file
+"""
+import os
 
+available_plugin_folders = sorted(os.listdir('./plugins'))
+available_plugins = []  # to be used as global variable in the simulator
+print('found plugin folders {}'.format(available_plugin_folders))
+for folder in available_plugin_folders:
+    if not folder.startswith('__') and not folder.startswith('.'):
+        exec('from .{0}.loader import Loader as {0}'.format(folder))
+        available_plugins.append(folder)