Vendoring compas inside another Rhino/Grasshopper package pulls in compas_ghpython's .ghuser components (stray broken COMPAS tab) #1523

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1. gonzalocasas commented on Aug 5, 2026

   

   gonzalocasas

   on Aug 5, 2026

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   @mengxihex that's a very good point, the bootstrapper is nowadays almost irrelevant, since Rhino 8 default install mode is using # r: compas and doesn't require the compas_rhino.install method anymore, but I see that at least one of the GH components still has an unguarded import of compas_bootstrapper that would make it fail.

   Raising this in case the use case is worth supporting more directly — e.g. publishing the CAD integrations as extras/separate dists (pip install compas[rhino]), or relocating the prebuilt .ghuser payload so it isn't discovered by Grasshopper's folder scan when the wheel is merely vendored

   Both are possible options. The latter probably the easiest to do in the short term.

   Happy to provide details of the deployment layout if useful.

   Yes, would be super nice!

   Also it's nice to know that this is a way that compas is used out there!
2. gonzalocasas commented on Aug 5, 2026

   

   gonzalocasas

   on Aug 5, 2026

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   /cc @tomvanmele
3. mengxihex commented on Aug 5, 2026

   

   mengxihex

   on Aug 5, 2026

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   Thanks @gonzalocasas! Here's the layout.

   The plugin lands in Rhino's standard packages folder; its Python dependencies
   are pip-installed at build time into a plain folder inside the package, which
   the components put on sys.path at runtime. Schematically:

   .../McNeel/Rhinoceros/packages/8.0/<PluginName>/<version>/
   ├── <plugin components>
   └── <vendored-libs>/                  <- pip install --target, plain folder
       ├── compas/                       <- only core compas is ever imported
       ├── compas_ghpython/              <- force-included by the wheel
       │   └── components/ghuser/*.ghuser   <- Grasshopper's recursive scan loads these
       ├── compas_rhino/  compas_blender/   <- also unused
       └── numpy/ ...
   

   The stray tab is also reproducible standalone: pip install --target ./libs compas inside any folder under the packages dir, then restart Grasshopper.

   Relocating the .ghuser payload out of the importable package would fully fix
   it for this deployment model.