Hello, when I try to install "qgis" I get resolving dependencies... warning: cannot resolve "qwtpolar>=1.1.0", a dependency of "qgis" warning: cannot resolve "spatialindex>=1.8.0", a dependency of "qgis" :: The following package cannot be upgraded due to unresolvable dependencies: qgis :: Do you want to skip the above package for this upgrade? [y/N] error: failed to prepare transaction (could not satisfy dependencies) :: qgis: requires qwtpolar>=1.1.0 :: qgis: requires spatialindex>=1.8.0 What does it mean? Viktor