[R-pkg-devel] Note on submission Found the following files/directories: 'NUL'

[J C Nash]

FWIW: optimx::optimx is outdated and only there for legacy use.
Better to use the optimx::optimr() function for single solvers.

JN


On 2022-11-25 05:10, Ivan Krylov wrote:
> В Fri, 25 Nov 2022 09:59:10 +0000
> "ROTOLO, Federico /FR" <Federico.ROTOLO using sanofi.com> пишет:
> 
>> When submitting my package parfm, I get the following note
>> Flavor: r-devel-linux-x86_64-debian-gcc
>> Check: for non-standard things in the check directory, Result: NOTE
>>    Found the following files/directories:
>>      'NUL'
>> so that my submission is rejected.
>>
>> I cannot find any file or directory called NUL in my package.
>> Do you have any suggestion?
> 
> The file gets created during the check when you call sink('NUL'):
> https://github.com/cran/parfm/blob/8c3f45291514aedde67cecf0b090ddd3487f3ada/R/parfm.R#L260-L299
> 
> It mostly works on Windows, where "nul" with any extension in any
> directory is the null file, but it creates a file named 'NUL' on other
> operating systems. It also breaks the non-default sink, if any was set
> up by the user.
> 
> Does optimx::optimx produce output that can't be turned off otherwise?
> (Does it help to set control$trace = 0?) Have you tried
> suppressMessages() or capture.output() with nullfile()?
>