[R-pkg-devel] Having shiny as an optional dependency
I did briefly wonder why your reply to me cited an email from Akshit Achara who asked about third party C++ API. I assumed it was because the solution to his problem and mine was the same. In the meantime, I got a reply from Kurt Hornik who said I have a top-level call soundcorrsGUI <- shiny::shinyApp (ui, server)
so what I should really do is to move "shiny" from "Suggests" to "Imports".
I don't want to do this, however, because the GUI is just an addition, the
package is perfectly usable without it. I wrapped "soundcorrsGUI" in a
function:
soundcorrsGUI <- function () {
if (!requireNamespace("shiny",quietly=T) ||
!requireNamespace("shinyjqui",quietly=T))
stop ("\"soundcorrsGUI\" requires packages \"shiny\" and \"shinyjqui\".")
shiny::shinyApp (ui, server)
}
and this seems to solve the problem with "shiny", but now I have a problem with "shinyjqui". I actually only need one function from it: in the call to "shinyApp" above, ui <- shiny::navbarPage ([?] ui.soundchanges [?])
where ui.soundchanges <- shiny::fluidPage ([?]
shinyjqui::sortableCheckboxGroupInput [?])
I tried wrapping "ui.soundchanges" in a function in the same way as I did with "soundcorrsGUI" but this doesn't help. Is there a way to make it work without turning "shiny" and "shinyjqui" into obligatory dependencies? Best wishes, Kamil Stachowski On Mon, 16 Nov 2020, 00:55 Uwe Ligges, <ligges at statistik.tu-dortmund.de> wrote:
On 14.11.2020 19:53, Kamil Stachowski wrote:
This is actually what I do. Before you replied, I was told to write to
CRAN
and explain, and they will decide whether the packages will be installed
on
CRAN machines. Thank you for your help nonetheless.
No, I told you about a "third party C++ API" you asked for, not about an R package. R packages from BioC + CRAN should be availabe on CRAN, in that case it is a problem in your package. Best, Uwe Ligges
Best, Kamil On Sat, 14 Nov 2020 at 19:39, G?bor Cs?rdi <csardi.gabor at gmail.com>
wrote:
You probably import functions from shiny. Don't do that, refer to them with the `::` operator instead. Gabor On Sat, Nov 14, 2020 at 6:12 PM Kamil Stachowski <kamil.stachowski at gmail.com> wrote:
I wrote a package that contains a graphical interface written with
packages
"shiny" and "shinyjqui". My package can also be used from the CLI, so I listed both "shiny" and "shinyjqui" as optional dependencies. I ran R
CMD
check --as-cran on my computer in R 3.6.3 and devel, and both passed without any errors or warnings. However, when I tried uploading the
package
to CRAN, I got this error:
Error in loadNamespace(x) : there is no package called ?shiny?
Error: unable to load R code in package ?soundcorrs?
Execution halted
ERROR: lazy loading failed for package ?soundcorrs?
How can I fix this?
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