Am 18.02.21 um 16:52 schrieb Duncan Murdoch:

you can suppress them using by having environment variable _R_CHECK_FORCE_SUGGESTS_ set to "FALSE".  If you are worried about a CRAN submission, explain to them in your submission message why they can't have all your suggested packages.

Yes this is my major problem.
Thank you for your help

Knut

Duncan Murdoch

On 18/02/2021 10:36 a.m., Knut Krueger wrote:
The following problem:

there are three packages foo1, foo2 and foo3 to use with the update of a
package. The availability depends on the configuration of the host
system. f.e java version

If I write in the Description

...
Suggests: foo1, foo2, foo3
....

inside of functions if have:

functionfoo <- function(data,usingpackage {
.....
foo1, foo2 and foo3
   if (usingpackage == "foo1") {
   do_something
}

.....

if (usingpackage == "foo2") {
   do_something
}
....
if (usingpackage == "foo3") {
   do_something
}

....
}

But of course it is not possible to get a positive check result.
It starts either with the missing package at suggest statement
or if I remove the suggest statement there is an error
    '::' or ':::' imports not declared from:
       ‘foo1’ ‘foo2’ ‘foo3’
     'loadNamespace' or 'requireNamespace' calls not declared from:
       ‘foo1’ ‘foo2’ ‘foo3’

Any hints to solve this issue?

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