I can't really see why it should be "recommended" to handle installing system
requirements inside an R package. There are many ways to satisfy such
requirements that would not involve miniconda. If you were determined to
provide such support, doing so in a normal function documented in a vignette
seems more appropriate.
On September 17, 2021 11:55:07 AM PDT, "Walter, Vonn"
<vwalt...@pennstatehealth.psu.edu> wrote:
>Hi Everyone,
>
>I am developing a package (called mypackage in the text below) that uses
>reticulate to call a Python script for computational efficiency. At some
>point during the development of the package I read that it would be good to
>verify installation of Miniconda. Thus mypackage includes an onLoad.R file
>that asks users to either confirm that Miniconda is installed or to proceed
>with installation on Miniconda. When I run devtools::check() I get a NOTE
>related to my onLoad.R file, and this seems to be causing problems when I
>submit the package to CRAN. There are no WARNINGs or ERRORs. Any thoughts
>would be greatly appreciated.
>
>Thanks,
>
>Vonn
>
>* checking R code for possible problems ... [19s] NOTE
>File 'mypackage/R/onLoad.R':
> .onLoad calls:
> packageStartupMessage("You should install miniconda before using this
> package")
>
>See section 'Good practice' in '?.onAttach'.
>
>Here's the code/text from my onLoad.R file:
>
>#' Perform necessary tasks when the mypackage package is loaded
>#'
>#'
>miniconda_installation <- NULL
>miniconda_permission <- NULL
>numpy_import <- NULL
>
>.onLoad <- function(libname, pkgname)
> {
> miniconda_installation <- utils::askYesNo("Is miniconda
> installed?")
>
> if (isFALSE(miniconda_installation))
> {
> miniconda_permission <-
> utils::askYesNo("Install miniconda? Downloads 50MB and takes time.")
>
> if (isTRUE(miniconda_permission))
> {
> reticulate::install_miniconda()
> } else{
>
> packageStartupMessage("You should install miniconda before using this
> package")
> }
>
> numpy_import <- reticulate::import("numpy",
> delay_load = TRUE)
> }
> }
>
>
>
> [[alternative HTML version deleted]]
>
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--
Sent from my phone. Please excuse my brevity.
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