* gnu/packages/python-xyz.scm (python-flufl-bounce): Update to 4.0. [arguments]: Replace check phase. [native-inputs]: Add PYTHON-FLUFL-TESTING.
* gnu/packages/python-xyz.scm (python-flufl-bounce): Update to 4.0. [arguments]: Replace check phase. [native-inputs]: Add PYTHON-FLUFL-TESTING.