mayavi conundrum

[Victor Eijkhout]

--->  Verifying checksum(s) for vtk5
--->  Extracting vtk5
--->  Configuring vtk5
--->  Building vtk5
--->  Staging vtk5 into destroot
--->  Installing vtk5 @5.2.1_2+tcltk+x11
--->  Activating vtk5 @5.2.1_2+tcltk+x11
--->  Cleaning vtk5
--->  Fetching py26-mayavi
Error: vtk must be installed with the +carbon variant
Error: Target org.macports.fetch returned: vtk must be installed with the +carbon variant
Log for py26-mayavi is at: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_ports_python_py26-mayavi/main.log
Error: Status 1 encountered during processing.
To report a bug, see <http://guide.macports.org/#project.tickets>
[albook:~] %% sudo port install vtk5 @5.2.1_2+tcltk+x11+carbon
Password:
Error: vtk5: Variant x11 conflicts with carbon
Error: Unable to open port: Error evaluating variants
To report a bug, see <http://guide.macports.org/#project.tickets>
[albook:~] %%