Using port command to see installation method

[Nate Ijams via macports-users]

Hello, all. I have struggled to find relevant documentation for this, 
and I hope I haven't just missed something obvious. I have installed 
some packages using the binaries available online, but I have also 
installed a number using the `-s` flag to ensure that they are installed 
from source.

Is there any way to determine whether a package was installed from 
source or binary besides manually going through folders in /opt/local?

Thanks for your help—
Nate Ijams

n...@ijams.me