scipy universal build architecture mismatch

[jberwald@…]

Hi,

I'm trying to install the port for graph-tool. The following error occurs when I run 'port install graph-tool':

Error: Cannot install py27-graph-tool for the arch(s) 'i386 x86_64' because

Error: its dependency py27-scipy does not build for the required arch(s) by default

Error: and does not have a universal variant.

Error: Unable to execute port: architecture mismatch

I'd think that scipy would have a universal variant, but then again, I'm new to Mac (from the linux world), so I'm not quite sure how this universal variant stuff works. I'm running Lion, 10.7.2.

Thanks, Jesse