The buildd failure for petsc 3.7.5+dfsg1-2 on amd64 seems to be transitory. I can't reproduce it, neither with pbuilder nor schroot on a debian porterbox. Also 3.7.5+dfsg1-1 had built successfully on alpha (experimental). I'd like it to try it again. There are no alpha porterboxes for me to test. Please give petsc back for build gb petsc_3.7.5+dfsg1-2 . amd64 alpha Thanks, Drew