gobject-introspection

[Eugen]

On a fresh 8.0 install xorg fails to build at gobject-introspection:

...
checking for /usr/local/bin/python2.6 script directory...
&{prefix}/lib/python2.6/site-packages
checking for /usr/local/bin/python2.6 extension module directory...
&{exec_prefix}/lib/python2.6/site-packages
checking for headers requires to compile python extensions... not found
configure: error: Python headers not found
===> Script "configure" failed unexpectedly.
...

Could it probably be because the variables "prefix" and "exec_prefix"
are not properly expanded to "/usr/local" and "/usr/local/bin" ?

Eugen