[R-pkg-devel] Working with R-devel

[Dirk Eddelbuettel]

On 24 January 2018 at 07:03, luke-tierney at uiowa.edu wrote:
| If you are picking up an R 3.4.x that is trying to load a package
| built by R-devel you should also see a warning that the package was
| built under R version 3.5.0

Yes, I am of course very aware of the issue.

But we had to separate out R-release and R-devel for years, and so I did. I
had separate libPaths (or, at least, leading component) for R-devel because
of that.
 
| If you are not, then you could be picking up an older R-devel from
| before the internals change. Probably more likely, the Rcpp being
| loaded at that point was built by 3.4.x, which would suggest library
| path settings are messed up at that point, but not clear why. [It
| might be possible and useful to provide more information about the
| broken pieces in the error message but I won't have time to look any
| time soon.]
| 
| At the moment when it matters I usually use
| 
| env R_LIBS=<my R-devel library> R CMD check ...
| 
| for checks under R_devel

It was the R_LIBS_USER (which used to work) to R_LIBS change that got plus
the fact that my R-devel was picking up my R-release check.Renviron. The hint
from Martin got rid of that.

Sometimes I wonder if we should have an extra-verbose mode that picks up
EVERY single Sys.getenv() and alike to make it easier to trace this. But
run-time cost of the check is probably unattractive.

Dirk

-- 
http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org