python-cherrypy now requires jaraco.collections and zc.lockfile; the former needs to be added to buildroot and both need to be selected by python-cherrypy. In addition, jaraco.classes is no longer required. See https://github.com/cherrypy/cherrypy/blob/v18.8.0/setup.py lines 60-65
Thank you for your report. The issue tracker for the Buildroot project has been moved to the Gitlab.com issue tracker: https://gitlab.com/buildroot.org/buildroot/-/issues We are taking this opportunity to close old issues in this old tracker. If you believe your issue is still relevant, please open one in the new issue tracker. Thank you!