Please don't skip/xfail tests - my suggestion above is an actual fix:
https://salsa.debian.org/rnpalmer-guest/python-altair/-/tree/fix1044073?ref_type=heads(In a fork because, despite its description, this is not actually a debian-science package. The Salsa CI "fail" is because the *old* version is uninstallable due to Breaks: in pandas and the piuparts upgrade test counts this as a fail.)
