Hi, I am one of the maintainers of the Charliecloud package [0]. The most recent version of Charliecloud (0.10) has added new python dependencies (lark [1] and its dependencies). Some of them are not yet available in Debian.
My salsa login is wiene-guest. I read the DPMT policy [2] and I accept it. Peter [0] https://tracker.debian.org/pkg/charliecloud [1] https://github.com/lark-parser/lark [2] https://salsa.debian.org/python-team/tools/python-modules/blob/master/policy.rst