boost-python-1.34.1 is already installed

[Hans Lambermont]

Why does an install attempt of astro/stellarium want to reinstall
devel/boost ?

portmaster -bd astro/stellarium
...
===>>> Starting build for astro/stellarium <<<===

===>>> Starting check for build dependencies
===>>> Gathering dependency list for astro/stellarium from ports
===>>> Starting dependency check
===>>> Launching child to update devel/boost
        astro/stellarium >> devel/boost
...
===>  Installing for boost-python-1.34.1
===>   Generating temporary packing list
===>  Checking if devel/boost already installed
===>   boost-python-1.34.1 is already installed
...
*** Error code 1

This is on 7.0-RELEASE, with a fresh portsnap tree.
pkg_info shows boost-python-1.34.1 is installed.

regards,
   Hans Lambermont