Are you sure you have the correct sources? I don't get such errors with current petsc-dev Things to check. [with both petsc-dev & BuildSystem] - do you have any edited fies? hg status - did you update the sources after pull? hg update If you have no local edits - then use the following to make sure the workingdir sources are uptodate cd petsc-dev make pull PETSC_ARCH=docsonly Satish On Sun, 28 Jan 2007, Victor Eijkhout wrote:

No module named Fiat.

I did a pull of the source and buildsystem.

Victor.