On 6 June 2020 at 15:44, Duncan Murdoch wrote: | On 06/06/2020 3:06 p.m., Dirk Eddelbuettel wrote: | > | > The Rcpp package and some related packages such as RcppArmadillo make use of | > (local) wrappers around the utils::package.skeleton() function for creating | > (basic yet functional) packages using Rcpp or RcppArmadillo. RStudio also | > exposes this under the graphical menu as a nice way to construct a package. | > | > But it seems that something changed quite recently in R. I looked into this a | > little yesterday and prepared a workaround for Rcpp; Kevin (CC'ed) was more | > diligent and found what changed with R itself. See the discussion under issue | > ticket #1087 at the Rcpp repo: https://github.com/RcppCore/Rcpp/issues/1087 | > The proposed simple PR is at https://github.com/RcppCore/Rcpp/pull/1088 | > | > As Kevin mentions in #1087, R itself may have changed, and he even dug up a | > possible commit [1]. One can illustrate that quickly with two different R | > interpreters, I use Docker here because that's what I often do. I apologise | > for the long command-line; that is basically just common Docker arguments. | > The keys are r-base:3.6.3 and r-base:4.0.0 for selecting the relevant R | > builds, and the command string passed to bash to call Rscript and | > package.skeleton() followed by a cat of the NAMESPACE file. | > | > ----------------------------------------------------------------------------- | > edd@rob:/tmp$ mkdir skeleton | > edd@rob:/tmp$ cd skeleton/ | > edd@rob:/tmp/skeleton$ docker run --rm -ti -u1000:1000 -v ${PWD}:/mnt -w /mnt r-base:3.6.3 bash -c "Rscript -e 'x <-1L; package.skeleton(name=\"p363\")'; cat p363/NAMESPACE" | > Creating directories ... | > Creating DESCRIPTION ... | > Creating NAMESPACE ... | > Creating Read-and-delete-me ... | > Saving functions and data ... | > Making help files ... | > Done. | > Further steps are described in './p363/Read-and-delete-me'. | > exportPattern("^[[:alpha:]]+") | > edd@rob:/tmp/skeleton$ docker run --rm -ti -u1000:1000 -v ${PWD}:/mnt -w /mnt r-base:4.0.0 bash -c "Rscript -e 'x <-1L; package.skeleton(name=\"p400\")'; cat p400/NAMESPACE" | > Creating directories ... | > Creating DESCRIPTION ... | > Creating NAMESPACE ... | > Creating Read-and-delete-me ... | > Saving functions and data ... | > Making help files ... | > Done. | > Further steps are described in './p400/Read-and-delete-me'. | > export("x") | > edd@rob:/tmp/skeleton$ | > ----------------------------------------------------------------------------- | > | > In short, 4.0.0 no longer exports via 'exportPattern("^[[:alpha:]]+")' | > rendering the new package created non-functional. | > | > Was this intentional, or is this a bug we can look into fixing for R 4.0.2 ? | | It's in the NEWS, so I'd assume it was intentional: | | - package.skeleton() now explicitly lists all exports in the | ‘NAMESPACE’ file. | | An earlier version of that message even showed up in the link you posted.
My bad. I usually look there first too. In which case the change is going to stay, so my quick adjustment to Rcpp should be fine too. Thanks for the prompt response. Dirk -- http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
