[R-pkg-devel] DBI namespace not found on check

Thanks, Ivan!

I completely missed the warning in the install.out file and had no idea where this was coming from. The object has a slot with a class inheriting from the S4Vectors package. Based on the very helpful thread you suggested, it appears that is the crux. The odd thing is that unlike the ade4 package which was NOT importing anything from the offending sp package, I list S4Vectors as an import. Why would, if the S4Vectors package has some dependencies on the DBI package (probably by way of the AnnotationDbi package?) would DBI not be installed?

Thanks, All!

Dayne

On Feb 1, 2022, at 10:14 AM, Ivan Krylov <krylov.r00t at gmail.com> wrote:

On Tue, 1 Feb 2022 08:27:54 -0500
Dayne Filer <dayne.filer at gmail.com> wrote:

I do not directly import or use any DBI functions.

00install.out says:

Warning: namespace ?DBI? is not available and has been replaced
by .GlobalEnv when processing object ?txp_example_model?

Should the txp_example_model object reference the DBI namespace?

I don't know the "right" solution here, but a similar problem has been
discussed here in R-pkg-devel some time ago:
https://stat.ethz.ch/pipermail/r-package-devel/2022q1/007633.html

You might have to depend on DBI explicitly because your data() object
uses it, but then `R CMD check` might object that you don't explicitly
import anything from it. One admittedly verbose way to work around that
would be to move the data file to inst/ and load it from
data/txp_example_model.R only after loadNamespace('DBI'), like some
data scripts do in the Matrix package.

-- 
Best regards,
Ivan