quiet R CMD check
factor out NeedsCompilation, and we need to check if the package p is in db
autoremove packages
also install texinfo because some packages need to build PDF vignettes
check if done is there every second, and write . after every 30 seconds
make sure p's dependencies are loadable, e.g. shiny is not loadable, because xtable is broken, in which case we need to reinstall xtable instead of shiny