Not possible to install bempp or bempp cl on Windows 11

You can use the Docker images of Bempp, see Installing Bempp | Bempp. Docker uses virtual machines that do not depend on local Python installation.

Looking at the error messages, the bempp library seems to have been installed correctly. However, using the shapes module requires installing gmsh to generate the meshes (see also Fail to import the package "bempp.api").

You could try relaxing the gmsh version requirement of pip, e.g., gmsh>=4.6.0, and check if that works on your system.