I think the key line = " Unfortunately, nimble will not work with this mechanism. "
Given that, depends seems like a good short-term solution. Change it to suggests once the upstream problem is fixed. On Wed, Aug 5, 2020 at 3:36 PM Simon Bonner <simon.bon...@uwo.ca> wrote: > Hi all, > > I’m wondering if someone an offer advice on a problem I’m facing in > developing a package. > > My package essentially generates code and formats data for one of two MCMC > sampling engines, JAGS accessed via rjags or nimble (a native R package), > calls the engines, and then provides functions to access the results. Since > only one of the engines is needed I would like to include rjags and nimble > in Suggests in the DESCRIPTION and use requireNamespace() to load the > appropriate package when its functionality is needed. > > Unfortunately, nimble will not work with this mechanism. It relies on a > complex mechanism to compile C++ code to run the sampler, and some of the > functions cannot be found when the package is loaded in this way. I’ve been > in touch with the maintainers and they are aware of the issue but the > current fix is to include the package under Depends. However, this forces a > user to install nimble (which itself requires compiling lengthy C++ code) > even if the user intends to run the sampler in JAGS. > > I thought I’d solved the problem by including nimble in Suggests and then > loading it via library() so that all of its functions are attached. This > works, but produces a note during the check: > ❯ checking dependencies in R code ... NOTE > 'library' or 'require' call to ‘nimble’ in package code. > Please use :: or requireNamespace() instead. > See section 'Suggested packages' in the 'Writing R Extensions' manual > > What is the recommendation? > > I see two options: > > > 1. Include nimble in Depends and force user to install it. > 2. Ignore the note and explain the problem when I resubmit to CRAN. > > Am I missing anything? > > Thanks in advance! > > Simon > > > > > > Simon Bonner > Assistant Professor of Environmetrics > Department of Statistical and Actuarial Sciences > University of Western Ontario > > Office: Western Science Centre rm 276 > > Email: sbonn...@uwo.ca<mailto:sbonn...@uwo.ca> | Telephone: 519-661-2111 > x88205 | Fax: 519-661-3813 > Twitter: @bonnerstatslab | Website: > http://simon.bonners.ca/bonner-lab/wpblog/ > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-package-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-package-devel > [[alternative HTML version deleted]] ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
