@rrrrrok (and all those interested)
Since the Renku Dockerfile now makes use of mamba instead of conda for more efficient builds, note that the Mamba documentation warns against mixing the Ananconda defaults channel and the popular conda-forge channels" !
I am also beginning to wonder whether this incompatibility between the defaults and conda-forge channels extends to other channels as well (e.g. gimli, see above).
In any case, as the Ananconda defaults channel is proposed by default in the Renku environment.yml, it may be useful to warn Renku users of incompatibility issues with a comment…