Petru Conduraru fffcf20724 Bonsai: fail with an actionable error instead of a bare KeyError when addon preferences can't be found
get_addon_preferences() looked up bpy.context.preferences.addons using a
package name Bonsai cached for itself once, at register() time. If that
cached name stops matching a currently enabled Blender addon (#7288: the
extension was moved to a different repository, e.g. bl_ext.user_default
vs bl_ext.blender_org, without restarting Blender, leaving the install in
an inconsistent state), the raw dict-style lookup raised an unhandled
KeyError with an internal, non-actionable message. That propagated out of
create_spatial_elements() during project load and aborted the entire
load, so any IFC file failed the same way, well before any geometry was
even read.

Chose to fail loudly but clearly rather than silently guess a
replacement addon entry: the maintainer's own diagnosis for #7288 was
that this represents a genuinely broken/inconsistent install, and
auto-resolving a different addon entry risks masking that instead of
telling the user their install needs attention. get_addon_preferences()
now raises a RuntimeError naming the exact mismatch and pointing at the
fix (restart Blender, or reinstall from Preferences > Get Extensions),
rather than a bare KeyError whose message is a raw bpy_prop_collection
repr.

Verified live in headless Blender against the actually-deployed Bonsai
extension on this machine: reproduced the exact bare KeyError by staging
a stale cached package name, confirmed the fix turns it into the new
RuntimeError, and confirmed the healthy/correctly-registered case still
returns a normal preferences object unchanged. No caller of
get_addon_preferences() catches KeyError specifically, so widening the
exception type is not a behavioural break for any of them.

Fixes #7288

Generated with the assistance of an AI coding tool.
2026-07-20 17:22:13 +03:00
2026-07-18 22:39:33 +05:00
2026-04-26 21:29:16 +02:00
2026-04-13 19:40:25 +05:00

IfcOpenShell

IfcOpenShell is an open source (LGPL) software library for working with Industry Foundation Classes (IFC). Complete parsing support is provided for IFC2x3 TC1, IFC4 Add2 TC1, IFC4x1, IFC4x2, and IFC4x3 Add2. Extensive geometric support is implemented for the IFC releases IFC2x3 TC1 and IFC4 Add2 TC1. Extending with support for arbitrary IFC schemas is possible at compile-time when using C++ and at run-time when using Python.

In addition to a C++ and Python API, IfcOpenShell comes with an ecosystem of tools, notably including IfcConvert (an application to convert IFC models to other formats), Bonsai (an add-on to Blender providing a graphical IFC authoring platform), and many other libraries, CLI apps, and more. Support is also provided for auxiliary standards such as BCF and IDS.

For more information, see:

Development is sponsored through your generous donations!

Open Collective Contributors

Contents

Name Description License Service
bcf Library to read and write BCF-XML and query OpenCDE BCF-API modules LGPL-3.0-or-later PyPI Anaconda-Server Badge
bonsai Add-on to Blender providing a graphical native IFC authoring platform GPL-3.0-or-later Official GitHub Unstable Chocolatey
bsdd Library to query the bSDD API LGPL-3.0-or-later PyPI
ifc2ca Utility to convert IFC structural analysis models to Code_Aster LGPL-3.0-or-later
ifc4d Convert to and from IFC and project management software LGPL-3.0-or-later PyPI
ifc5d Report and optimise cost information from IFC LGPL-3.0-or-later PyPI
ifcbimtester Wrapper for Gherkin based unit testing for IFC models LGPL-3.0-or-later
ifcblender Historic Blender IFC import add-on LGPL-3.0-or-later*
ifccityjson Convert CityJSON to IFC LGPL-3.0-or-later PyPI
ifcclash Clash detection library and CLI app LGPL-3.0-or-later PyPI
ifcconvert CLI app to convert IFC to many other formats LGPL-3.0-or-later* Official GitHub
ifccsv Library and CLI app to export and import schedules from IFC LGPL-3.0-or-later PyPI
ifcdiff Compare changes between IFC models LGPL-3.0-or-later PyPI
ifcedit CLI wrapper for ifcopenshell.api IFC model mutation functions LGPL-3.0-or-later PyPI
ifcfm Extract IFC data for FM handover requirements LGPL-3.0-or-later PyPI
ifcmax Historic extension for IFC support in 3DS Max LGPL-3.0-or-later* Official
ifcmcp MCP server for querying and editing IFC building models LGPL-3.0-or-later PyPI
ifcopenshell-python Python library for IFC manipulation LGPL-3.0-or-later* Official GitHub PyPI Anaconda Anaconda Docker AUR AUR Unstable Pyodide WASM Wheels tag
ifcpatch Utility to run pre-packaged scripts to manipulate IFCs LGPL-3.0-or-later PyPI
ifcquery CLI tool for querying and inspecting IFC building models LGPL-3.0-or-later PyPI
ifcsverchok Blender Add-on for visual node programming with IFC GPL-3.0-or-later GitHub
ifctester Library, CLI and webapp for IDS model auditing LGPL-3.0-or-later PyPI

The IfcOpenShell C++ codebase is split into multiple interal libraries:

Name Description License
ifcgeom Internal library for IfcOpenShell LGPL-3.0-or-later*
ifcgeom_schema_agnostic Internal library for IfcOpenShell LGPL-3.0-or-later*
ifcgeomserver Internal library for IfcOpenShell LGPL-3.0-or-later*
ifcjni Internal library for IfcOpenShell LGPL-3.0-or-later*
ifcparse Internal library for IfcOpenShell LGPL-3.0-or-later*
ifcwrap Internal library for IfcOpenShell LGPL-3.0-or-later*
qtviewer Internal library for IfcOpenShell LGPL-3.0-or-later*
serializers Internal library for IfcOpenShell LGPL-3.0-or-later*
S
Description
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Readme 487 MiB
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C++ 57.4%
Python 36.2%
C 3.9%
Gherkin 0.7%
JavaScript 0.3%
Other 1.3%