The issue here is that pkg> add TensorKit@0.9 doesn’t add a [compat] entry, so subsequent Pkg operations can do whatever they want. IIRC this may be fixed on Julia 1.8, but in the meantime you can add the corresponding compat entry by hand.
The issue here is that pkg> add TensorKit@0.9 doesn’t add a [compat] entry, so subsequent Pkg operations can do whatever they want. IIRC this may be fixed on Julia 1.8, but in the meantime you can add the corresponding compat entry by hand.