[R-pkg-devel] Downloading software as part of package installation
David B. Dahl
d@hl @ending from @t@t@byu@edu
Wed Sep 5 00:56:18 CEST 2018
Uwe: Oh, right, I wasn't thinking about binary packages. Thanks! -- David
On Tue, Sep 4, 2018 at 9:02 AM Uwe Ligges
<ligges using statistik.tu-dortmund.de> wrote:
> On 04.09.2018 04:18, David B. Dahl wrote:
> > I would like advise and help in interpreting a part of the CRAN
> > Repository Policy. It states, "Downloads of additional software or
> > data as part of package installation or startup should only use secure
> > download mechanisms (e.g., ‘https’ or ‘ftps’)."
> > From this, I take that it is permissible for a package to use its
> > .onLoad function to download and install files in the package's
> > subdirectory. E.g., for the package 'foo', the .onLoad function could
> > place items in a subdirectory of 'system.file(package="foo")'. Since
> > package installation called the .onLoad function when "testing if
> > installed package can be loaded," this would work (assuming the
> > computer has internet access at the time, otherwise the download could
> > be skipped). Once downloaded, the package wouldn't need to download
> > it ever again.
> > The benefit of this approach is that the additional software is
> > automatically downloaded when the package is installed, rather than
> > the user knowing they having to manually call a special function to
> > download the software (to another location) after package
> > installation.
> > Does this seem like a valid approach for CRAN?
> > And, does the answer change when I get R CMD check says:
> > checking installed package size ... NOTE
> > installed size is 182.1Mb
> Think about license issues:
> A binary CRAN package (e.g. for Mac or Windows) will contain that other
> software while the source package does not. Hence it may be a license
> violation depoending on the license of the software you download.
> Uwe Ligges
> > This is just a NOTE, so my understanding is that is permissible.
> > Any thoughts? Thanks!!
> > -- David
> > ______________________________________________
> > R-package-devel using r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-package-devel
More information about the R-package-devel