Package installation for revdep_check is not parallelized

[wch]

I think it used to be the case that when revdep_check() was called with a value for Ncpus, it would install packages in parallel because it passed Ncpus to install.packages(). Now the packages seem to be installed one at a time, which is much slower -- I'm installing over 600 packages for a revdep check, so the cost is not trivial. I believe this happens because it ends up calling install_remotes, which looks like it installs packages one at a time.

[krlmlr]

I've been through this with RSQLite. It's a one-time cost, which you can alleviate by setting MAKEFLAGS=-j $(nproc) .

See r-lib/remotes#34 for a related discussion; looks like devtools might eventually forward to the "remotes" package (#1310).

[hadley]

This will be/is resolved in the new revdepcheck package

[lock]

This old issue has been automatically locked. If you believe you have found a related problem, please file a new issue (with reprex) and link to this issue. https://reprex.tidyverse.org/