[R-pkg-devel] NOTE related to Miniconda installation

[Maciej Nasinski]

Hey,

First of all I see that you need a numpy package so I assume some
matrix/tensor operations are done. There is no difference in performance
between R and Python if you are using proper BLAS and LAPACK.
 Windows users might use MRO MKL, Linux users openblas and the Mac os
vecLib has to be activated. I done some benchmarks some time ago,
https://github.com/Polkas/RPbenchmarks. Unfortunately they are done only
partly.

If we talking about system requirements as i see you need only python and a
one library numpy. As i remember rsconnect using python script and do not
need any additional system requirements.
https://github.com/rstudio/rsconnect/blob/main/inst/resources/environment.py.
they run it if python is available, if not other code is executed.

Have a nice day.

Best,
Maciej Nasinaki

On Sat, Sep 18, 2021, 05:27 Jeff Newmiller <jdnewmil using dcn.davis.ca.us> wrote:

> 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" <
> vwalter1 using 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]]
> >
> >______________________________________________
> >R-package-devel using r-project.org mailing list
> >https://stat.ethz.ch/mailman/listinfo/r-package-devel
>
> --
> Sent from my phone. Please excuse my brevity.
>
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