[R-pkg-devel] Submitting to CRAN a package depending on RGtk2

[Lorenzo Busetto]

Ok. Duly noted. I'll  be more concise and avoid even simple formatting
(seems italics broke my last post to pieces). I'll try again.

My main problem is that, if I have "gWidgetRGtk2" as an imported package,
installation on Windows from github crashes RStudio while trying to install
GTK+ libraries (although I have no ERRORS nor WARNINGS in R CMD check).

If I remove the dependency and ask users to install  "gWidgetsRGtk2"
beforehand (which doesn't crash) I obviously get this WARNING:

> checking dependencies in R code ... WARNING 'loadNamespace' or
'requireNamespace' call not declared from: ‘gWidgetsRGtk2’

I found out I can avoid both problems  using the "pacman" package in my
Main:

> if (!pacman::p_exists("gWidgetsRGtk2", local = TRUE))
{pacman::p_load("gWidgetsRGtk2")}

In this way,  ‘gWidgetsRGtk2’ is  installed only at first execution of my
Main, and I'm up and running.

Is this a viable solution (clearly, provided I ask permission to the user
before installing with p_load)   ?

Thanks in advance,

Lorenzo

PS: better ?


On 20 October 2016 at 15:34, Dirk Eddelbuettel <edd at debian.org> wrote:

>
> Lorenzo,
>
> Your mails are too long (at least for my attention span, and available
> time)
> and very poorly formatted. Many of us read email in text-only terminals.
>
> On 20 October 2016 at 11:05, Lorenzo Busetto wrote:
> | I also have a (maybe stupid) question on this: in theory, I could write
> | this "configuration check" also as a "R" function which sends out
> "system"
> | commands if it detects a Linux environment (configuring the commands on
> the
>
> No, just use
>
>    Sys.info()[["sysname"]]
>
> and see `help(Sys.info()`.  R can tell you a lot about the environment.
>
> Dirk
>
> --
> http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org
>

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