[R-pkg-devel] R CMD check --as-cran problem

[Wang, Zhu]

Apologize for multiple emails but my another email with source version of the package was hold waiting for moderator approval.

No error when submitted to winbuilder. 
https://win-builder.r-project.org/37M4Uw7RvkCv

Thanks,

Zhu

-----Original Message-----
From: Uwe Ligges [mailto:ligges using statistik.tu-dortmund.de] 
Sent: Monday, January 14, 2019 1:52 PM
To: Wang, Zhu; Dirk Eddelbuettel; Duncan Murdoch
Cc: r-package-devel using r-project.org
Subject: Re: [R-pkg-devel] R CMD check --as-cran problem

What happens if you submit to winbuilder?

If that gives the same error, make the source version of your package 
available that you are checking.


Best,
Uwe Ligges


On 14.01.2019 20:30, Wang, Zhu wrote:
> First, I removed the Rnw file in vignettes to make simple.
> 
> Then I followed Duncan's suggestions below, but I had the same error.
> 
> Next, in the DESCRIPTION, I added survival in Imports, and  importFrom("survival", "survfitKM") in NAMESPACE. But I still had the same error: there is no package called 'Matrix'.
> 
> Thanks,
> 
> Zhu
> 
> -----Original Message-----
> From: Dirk Eddelbuettel [mailto:dirk.eddelbuettel using gmail.com] On Behalf Of Dirk Eddelbuettel
> Sent: Monday, January 14, 2019 12:45 PM
> To: Duncan Murdoch
> Cc: Dirk Eddelbuettel; Wang, Zhu; r-package-devel using r-project.org
> Subject: Re: [R-pkg-devel] R CMD check --as-cran problem
> 
> 
> On 14 January 2019 at 13:19, Duncan Murdoch wrote:
> | On 14/01/2019 12:37 p.m., Dirk Eddelbuettel wrote:
> | >
> | > On 14 January 2019 at 16:52, Wang, Zhu wrote:
> | > | Thanks Dirk and Klaus. The package Matrix is not used directly but it is used by package survival, which was called in Suggests.  So I am not sure what is the problem. But why CRAN has no such error https://cran.r-project.org/web/checks/check_results_bujar.html. I assumed the CRAN check uses the same R version 3.5.2 as I have. The problem only occurred when I used --as-cran option.
> | >
> | > Doesn't this mean that you may to ensure Matrix is present when survival
> | > might be used -- so if your package suggests survival it should also suggest
> | > Matrix?
> |
> | That shouldn't be necessary.  Since survival imports Matrix, you
> | shouldn't be able to load survival unless Matrix is available.
> | requireNamespace("survival") should fail.
> |
> | I think the problem in bujar is that it never checks
> | requireNamespace("survival"), it just calls
> | getFromNamespace('survfitKM','survival').  That will usually work (just
> | about everyone has survival installed, since it's recommended), but is
> | unsafe.  Zhu should use survival::survfitKM, but only after checking
> | that requireNamespace("survival") is successful.
> 
> Yes, I agree. I mostly tried to be helpful but my email wasn't all that
> effective in that.
> 
> Zhu: the behaviour when --as-cran is not set is irrelevant as CRAN asks you
> to test with --as-cran set, so there really is only one relevant choice.
> 
> And Duncan now kindly detailed the appropriate use case: test for a suggested
> package. Or if your use is not conditional, import from it.
> 
> Dirk
>