"Problem: package xeus-cling-0.12.0-h5a79028_0 requires xtl >=0.7.0,<0.8.0a0, but none of the providers can be installed"
sigh
I don't know when it started, but it seems to be a recent trend to add dependencies for anything and to package everything on demand. It's probably for security or something. But I do miss the days when people would link a static binary that "just works" even without internet and that'll keep working a week later, because it includes all of its dependencies as opposed to downloading and updating 500 packages on-demand.