diff --git a/src/bonsai/Makefile b/src/bonsai/Makefile
index 6fc51c463a..c3324178df 100644
--- a/src/bonsai/Makefile
+++ b/src/bonsai/Makefile
@@ -106,7 +106,7 @@ endif
 endif # def PLATFORM
 
 # Current build commit hash.
-OLD:=1c5b825
+OLD:=3e7b739
 .PHONY: bump
 bump:
 ifndef NEW
diff --git a/src/ifcopenshell-python/Makefile b/src/ifcopenshell-python/Makefile
index 7d6592635d..350808ec25 100644
--- a/src/ifcopenshell-python/Makefile
+++ b/src/ifcopenshell-python/Makefile
@@ -54,8 +54,8 @@ ifeq ($(PLATFORM), win64)
 PLATFORMTAG:=win_amd64
 endif
 
-BINARY_VERSION:=0.8.5
-BUILD_COMMIT:=1c5b825
+BINARY_VERSION:=0.8.6
+BUILD_COMMIT:=3e7b739
 IOS_URL:=https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-$(PYNUMBER)-v$(BINARY_VERSION)-$(BUILD_COMMIT)-$(PLATFORM).zip
 IFCCONVERT_URL:=https://s3.amazonaws.com/ifcopenshell-builds/IfcConvert-v$(BINARY_VERSION)-$(BUILD_COMMIT)-$(PLATFORM).zip
 
diff --git a/src/ifcopenshell-python/ifcopenshell/__init__.py b/src/ifcopenshell-python/ifcopenshell/__init__.py
index c50ff343e9..85b310b9ce 100644
--- a/src/ifcopenshell-python/ifcopenshell/__init__.py
+++ b/src/ifcopenshell-python/ifcopenshell/__init__.py
@@ -95,7 +95,9 @@ from .entity_instance import entity_instance, register_schema_attributes
 from .file import file, rocksdb_lazy_instance
 from .file import file as _file
 from .sql import sqlite, sqlite_entity
-from .ifcopenshell_wrapper import get_log, logger
+
+get_log = ifcopenshell_wrapper.get_log
+logger = getattr(ifcopenshell_wrapper, "logger", None)
 
 # explicitly specify available imported symbols
 # (it's a requirement for a typed library)
@@ -192,10 +194,10 @@ def open(
         raise FileNotFoundError(f"Path does not exist: '{path}'.")
     if format is None:
         format = guess_format(path)
-    if logger is None:
-        logger = ifcopenshell_wrapper.logger.Root()
+    if logger is None and (logger_type := getattr(ifcopenshell_wrapper, "logger", None)):
+        logger = logger_type.Root()
     if format == ".ifcXML":
-        f = ifcopenshell_wrapper.parse_ifcxml(str(path.absolute()), logger)
+        f = ifcopenshell_wrapper.parse_ifcxml(str(path.absolute()), *((logger,) if logger is not None else ()))
         if f:
             return file(f)
         raise OSError(f"Failed to parse .ifcXML file from {path}")
@@ -212,9 +214,11 @@ def open(
     if should_stream:
         return stream(path)
     if readonly:  # Temporary conditional see #7131. Remove once newer builds don't segfault on Linux.
-        f = ifcopenshell_wrapper.open(str(path.absolute()), readonly, logger)
+        f = ifcopenshell_wrapper.open(str(path.absolute()), readonly, *((logger,) if logger is not None else ()))
     elif bypass_types:
-        f = ifcopenshell_wrapper.file(ifcopenshell_wrapper.uninitialized_tag(), logger)
+        f = ifcopenshell_wrapper.file(
+            ifcopenshell_wrapper.uninitialized_tag(), *((logger,) if logger is not None else ())
+        )
         for ty in bypass_types:
             f.bypass_type(ty)
         if mmap:
@@ -224,9 +228,12 @@ def open(
             f.initialize(str(path.absolute()))
     elif mmap:
         # mmap parameter is only available for builds with USE_MMAP, not used in our main builds
-        f = ifcopenshell_wrapper.open(str(path.absolute()), mmap=mmap, logger=logger)  # ty: ignore[unknown-argument]
+        kwargs = {"mmap": mmap}
+        if logger is not None:
+            kwargs["logger"] = logger
+        f = ifcopenshell_wrapper.open(str(path.absolute()), **kwargs)  # ty: ignore[unknown-argument]
     else:
-        f = ifcopenshell_wrapper.open(str(path.absolute()), False, logger)
+        f = ifcopenshell_wrapper.open(str(path.absolute()), False, *((logger,) if logger is not None else ()))
     return file(f)
 
 
diff --git a/src/ifcopenshell-python/ifcopenshell/draw.py b/src/ifcopenshell-python/ifcopenshell/draw.py
index b7bc4db365..147a23498d 100644
--- a/src/ifcopenshell-python/ifcopenshell/draw.py
+++ b/src/ifcopenshell-python/ifcopenshell/draw.py
@@ -107,7 +107,7 @@ def main(
     progress_function: Callable = DO_NOTHING,
     logger=None,
 ):
-    if logger is None:
+    if logger is None and ifcopenshell.logger is not None:
         logger = ifcopenshell.logger.Root()
 
     def by_guid(g):
@@ -543,7 +543,7 @@ def main(
             arranged = W.arrange_polygons(
                 *filter(None, (ARRANGE_POLYGON_SETTINGS,)),
                 polies,  # ty: ignore[too-many-positional-arguments]
-                logger,
+                *((logger,) if logger is not None else ()),
             )
             svg_data_3 = W.polygons_to_svg(arranged, False)
             dom3 = parseString(svg_data_3)
diff --git a/src/ifcopenshell-python/ifcopenshell/express/bootstrap.py b/src/ifcopenshell-python/ifcopenshell/express/bootstrap.py
index ef3c3c3ef0..578e561e79 100644
--- a/src/ifcopenshell-python/ifcopenshell/express/bootstrap.py
+++ b/src/ifcopenshell-python/ifcopenshell/express/bootstrap.py
@@ -217,7 +217,8 @@ for id in to_emit:
     statements.append("%s << %s" % (id, stmt))
 
 if __name__ == "__main__":
-    print(r"""
+    print(
+        r"""
 # This file is generated by IfcOpenShell ifcexpressparser bootstrap.py
 
 from __future__ import annotations
@@ -256,4 +257,6 @@ if __name__ == "__main__":
         mdl = importlib.import_module(output)
         mdl.Generator(m).emit()
     sys.stdout.write(m.schema.name)
-""" % ("\n        ".join(statements)))
+"""
+        % ("\n        ".join(statements))
+    )
diff --git a/src/ifcopenshell-python/ifcopenshell/express/schema_class.py b/src/ifcopenshell-python/ifcopenshell/express/schema_class.py
index 3981dbc421..dd1e96c889 100644
--- a/src/ifcopenshell-python/ifcopenshell/express/schema_class.py
+++ b/src/ifcopenshell-python/ifcopenshell/express/schema_class.py
@@ -363,18 +363,24 @@ class EarlyBoundCodeWriter:
             )
         )
 
-        self.statements[self.statements.index("{factory_placeholder}")] = """
+        self.statements[self.statements.index("{factory_placeholder}")] = (
+            """
 class %(schema_name)s_instance_factory : public IfcParse::instance_factory {
     virtual IfcUtil::IfcBaseClass* operator()(const IfcParse::declaration* decl, IfcEntityInstanceData&& data) const {
         %(instance_mapping)s
     }
 };
-""" % locals()
+"""
+            % locals()
+        )
 
         ""
-        self.statements[self.statements.index("{string_pool_placeholder}")] = """
+        self.statements[self.statements.index("{string_pool_placeholder}")] = (
+            """
 const std::string strings[] = {%s};
-""" % ",".join(map(lambda s: '"%s"s' % s, self.strings))
+"""
+            % ",".join(map(lambda s: '"%s"s' % s, self.strings))
+        )
 
     def __str__(self):
         return "\n".join(self.statements)
diff --git a/src/ifcopenshell-python/ifcopenshell/geom/app.py b/src/ifcopenshell-python/ifcopenshell/geom/app.py
index d6bab207f1..fa07f3f2b8 100644
--- a/src/ifcopenshell-python/ifcopenshell/geom/app.py
+++ b/src/ifcopenshell-python/ifcopenshell/geom/app.py
@@ -145,7 +145,8 @@ class configuration:
             config.set(
                 "snippets",
                 "print all wall ids",
-                self.config_encode("""
+                self.config_encode(
+                    """
 ###########################################################################
 # A simple script that iterates over all walls in the current model       #
 # and prints their Globally unique IDs (GUIDS) to the console window      #
@@ -153,13 +154,15 @@ class configuration:
 
 for wall in model.by_type("IfcWall"):
     print ("wall with global id: "+str(wall.GlobalId))
-""".lstrip()),
+""".lstrip()
+                ),
             )
 
             config.set(
                 "snippets",
                 "print properties of current selection",
-                self.config_encode("""
+                self.config_encode(
+                    """
 ###########################################################################
 # A simple script that iterates over all IfcPropertySets of the currently #
 # selected object and prints them to the console                          #
@@ -177,7 +180,8 @@ if selection:
              for prop in relDefinesByProperties.RelatingPropertyDefinition.HasProperties:
                  print ("{:<20} :{}".format(prop.Name,prop.NominalValue.wrappedValue))
          print ("\\n")
-""".lstrip()),
+""".lstrip()
+                ),
             )
             with open(conf_file, "w") as configfile:
                 config.write(configfile)
diff --git a/src/ifcopenshell-python/ifcopenshell/geom/main.py b/src/ifcopenshell-python/ifcopenshell/geom/main.py
index 8161512836..fc66264b95 100644
--- a/src/ifcopenshell-python/ifcopenshell/geom/main.py
+++ b/src/ifcopenshell-python/ifcopenshell/geom/main.py
@@ -302,8 +302,8 @@ class iterator(ifcopenshell_wrapper.Iterator):
         logger=None,
     ):
         self.settings = settings
-        if logger is None:
-            logger = ifcopenshell_wrapper.logger.Root()
+        if logger is None and (logger_type := getattr(ifcopenshell_wrapper, "logger", None)):
+            logger = logger_type.Root()
         if isinstance(file_or_filename, file):
             self.file = file
             file_or_filename = file_or_filename.wrapped_data
@@ -336,19 +336,18 @@ class iterator(ifcopenshell_wrapper.Iterator):
             else:
                 initializer = ifcopenshell_wrapper.construct_iterator_with_include_exclude
 
-            self.this = initializer(
+            args = (
                 geometry_library,
                 self.settings,
                 file_or_filename,
                 include_or_exclude,
                 include is not None,
                 num_threads,
-                logger,
             )
+            self.this = initializer(*args, *((logger,) if logger is not None else ()))
         else:
-            self.this = ifcopenshell_wrapper.construct_iterator(
-                geometry_library, self.settings, file_or_filename, num_threads, logger
-            )
+            args = (geometry_library, self.settings, file_or_filename, num_threads)
+            self.this = ifcopenshell_wrapper.construct_iterator(*args, *((logger,) if logger is not None else ()))
 
     if has_occ:
 
@@ -517,7 +516,11 @@ def create_shape(
     return wrap_shape_creation(
         settings,
         ifcopenshell_wrapper.create_shape(
-            settings, inst.wrapped_data, repr.wrapped_data if repr is not None else None, geometry_library, *(filter(None, (logger,)))
+            settings,
+            inst.wrapped_data,
+            repr.wrapped_data if repr is not None else None,
+            geometry_library,
+            *((logger,) if logger is not None else ()),
         ),
     )
 
diff --git a/src/ifcopenshell-python/ifcopenshell/util/cost.py b/src/ifcopenshell-python/ifcopenshell/util/cost.py
index 4354e49e90..fc3de44455 100644
--- a/src/ifcopenshell-python/ifcopenshell/util/cost.py
+++ b/src/ifcopenshell-python/ifcopenshell/util/cost.py
@@ -355,7 +355,8 @@ def get_cost_rate(
 
 class CostValueUnserialiser:
     def parse(self, formula: str):
-        l = lark.Lark("""start: formula
+        l = lark.Lark(
+            """start: formula
                     formula: operand (operator operand)*
                     operand: value | category "(" formula ")"
                     value: NUMBER?
@@ -392,7 +393,8 @@ class CostValueUnserialiser:
                     NEWLINE: (CR? LF)+
 
                     %ignore WS // Disregard spaces in text
-                 """)
+                 """
+        )
         start = l.parse(formula)
         return self.get_formula(start.children[0])
 
diff --git a/src/ifcopenshell-python/ifcopenshell/util/selector.py b/src/ifcopenshell-python/ifcopenshell/util/selector.py
index abaa4e4119..d67292fb1d 100644
--- a/src/ifcopenshell-python/ifcopenshell/util/selector.py
+++ b/src/ifcopenshell-python/ifcopenshell/util/selector.py
@@ -39,7 +39,8 @@ import ifcopenshell.util.shape
 import ifcopenshell.util.system
 import ifcopenshell.util.unit
 
-filter_elements_grammar = lark.Lark("""start: filter_group
+filter_elements_grammar = lark.Lark(
+    """start: filter_group
     filter_group: facet_list ("+" facet_list)*
     facet_list: facet ("," facet)*
 
@@ -110,9 +111,11 @@ filter_elements_grammar = lark.Lark("""start: filter_group
     NEWLINE: (CR? LF)+
 
     %ignore WS // Disregard spaces in text
-""")
+"""
+)
 
-get_element_grammar = lark.Lark("""start: keys
+get_element_grammar = lark.Lark(
+    """start: keys
 
     keys: key ("." key)*
     key: quoted_string | regex_string | unquoted_string
@@ -127,9 +130,11 @@ get_element_grammar = lark.Lark("""start: keys
     WS: /[ \\t\\f\\r\\n]/+
 
     %ignore WS // Disregard spaces in text
- """)
+ """
+)
 
-format_grammar = lark.Lark("""start: expression
+format_grammar = lark.Lark(
+    """start: expression
 
     ?expression: add_sub
     ?add_sub: mul_div
@@ -188,7 +193,8 @@ format_grammar = lark.Lark("""start: expression
     NEWLINE: (CR? LF)+
 
     %ignore WS // Disregard spaces in text
-""")
+"""
+)
 
 
 class FormatTransformer(lark.Transformer):