diff --git a/flaschengeist/plugins/pricelist/__init__.py b/flaschengeist/plugins/pricelist/__init__.py
index ef19807..b4df1ac 100644
--- a/flaschengeist/plugins/pricelist/__init__.py
+++ b/flaschengeist/plugins/pricelist/__init__.py
@@ -567,6 +567,7 @@ def get_columns(userid, current_session):
         userController.persist()
         return no_content()
 
+
 @PriceListPlugin.blueprint.route("/users/<userid>/pricecalc_columns_order", methods=["GET", "PUT"])
 @login_required()
 def get_columns_order(userid, current_session):
diff --git a/run_flaschengeist b/run_flaschengeist
index 26c10ec..e11271e 100644
--- a/run_flaschengeist
+++ b/run_flaschengeist
@@ -17,7 +17,7 @@ class PrefixMiddleware(object):
     def __call__(self, environ, start_response):
 
         if environ["PATH_INFO"].startswith(self.prefix):
-            environ["PATH_INFO"] = environ["PATH_INFO"][len(self.prefix):]
+            environ["PATH_INFO"] = environ["PATH_INFO"][len(self.prefix) :]
             environ["SCRIPT_NAME"] = self.prefix
             return self.app(environ, start_response)
         else:
@@ -83,19 +83,19 @@ class InterfaceGenerator:
         import typing
 
         if (
-                inspect.ismodule(module[1])
-                and module[1].__name__.startswith(self.basename)
-                and module[1].__name__ not in self.known
+            inspect.ismodule(module[1])
+            and module[1].__name__.startswith(self.basename)
+            and module[1].__name__ not in self.known
         ):
             self.known.append(module[1].__name__)
             for cls in inspect.getmembers(module[1], lambda x: inspect.isclass(x) or inspect.ismodule(x)):
                 self.walker(cls)
         elif (
-                inspect.isclass(module[1])
-                and module[1].__module__.startswith(self.basename)
-                and module[0] not in self.classes
-                and not module[0].startswith("_")
-                and hasattr(module[1], "__annotations__")
+            inspect.isclass(module[1])
+            and module[1].__module__.startswith(self.basename)
+            and module[0] not in self.classes
+            and not module[0].startswith("_")
+            and hasattr(module[1], "__annotations__")
         ):
             self.this_type = module[0]
             print("\n\n" + module[0] + "\n")
@@ -156,12 +156,14 @@ def export(arguments):
     app = create_app()
     with app.app_context():
         gen = InterfaceGenerator(arguments.namespace, arguments.file)
-        gen.run(models)
-        if arguments.plugins:
+        if not arguments.no_core:
+            gen.run(models)
+        if arguments.plugins is not None:
             for entry_point in pkg_resources.iter_entry_points("flaschengeist.plugin"):
-                plg = entry_point.load()
-                if hasattr(plg, "models") and plg.models is not None:
-                    gen.run(plg.models)
+                if len(arguments.plugins) == 0 or entry_point.name in arguments.plugins:
+                    plg = entry_point.load()
+                    if hasattr(plg, "models") and plg.models is not None:
+                        gen.run(plg.models)
         gen.write()
 
 
@@ -183,7 +185,12 @@ if __name__ == "__main__":
     parser_export.set_defaults(func=export)
     parser_export.add_argument("--file", help="Filename where to save", default="flaschengeist.d.ts")
     parser_export.add_argument("--namespace", help="Namespace of declarations", default="FG")
-    parser_export.add_argument("--plugins", help="Also export plugins", action="store_true")
+    parser_export.add_argument(
+        "--no-core",
+        help="Do not export core declarations (only useful in conjunction with --plugins)",
+        action="store_true",
+    )
+    parser_export.add_argument("--plugins", help="Also export plugins (none means all)", nargs="*")
 
     args = parser.parse_args()
     args.func(args)