mlr3misc uses backports::errorCondition, so to the degree it imports backports, it should require the backports version that introduced that. Otherwise it's very hard for a user who happens to have an old backports version installed to find out what the problem is.
mlr3misc uses backports::errorCondition, so to the degree it imports backports, it should require the backports version that introduced that. Otherwise it's very hard for a user who happens to have an old backports version installed to find out what the problem is.