I don’t think vtkbool is accesible via pip.
If you don’t want to build VTK then one option is to use VTK in the virtual Python environment that 3D Slicer provides. vtkbool is built as part of the Sandbox extension, so after installing 3D Slicer, install the Sandbox extension. You can get started with vtkbool using the convenient GUI of “Combine models” module.