[R-pkg-devel] package installation fails due to missing package not listed in NAMESPACE

[Duncan Murdoch]

On 16/05/2017 7:34 AM, Thierry Onkelinx wrote:
> Try adding requireNamespace("ggplot2") in the function that rely on ggplot2.

That's not enough, even though it might fool the test (I haven't 
checked).  Those functions need to condition on the result, i.e. 
something like

if (requireNamespace("ggplot2")) ggplot2::ggplot()
else  ... (optional warning that you need it) ...

Duncan Murdoch

>
> ir. Thierry Onkelinx
> Instituut voor natuur- en bosonderzoek / Research Institute for Nature and
> Forest
> team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
> Kliniekstraat 25
> 1070 Anderlecht
> Belgium
>
> To call in the statistician after the experiment is done may be no more
> than asking him to perform a post-mortem examination: he may be able to say
> what the experiment died of. ~ Sir Ronald Aylmer Fisher
> The plural of anecdote is not data. ~ Roger Brinner
> The combination of some data and an aching desire for an answer does not
> ensure that a reasonable answer can be extracted from a given body of data.
> ~ John Tukey
>
> 2017-05-16 13:22 GMT+02:00 Jonathon Love <jon at thon.cc>:
>
>> yes, sorry, crucial piece of information i forgot to mention.
>>
>> ggplot2 *is* in suggests.
>>
>> with thanks
>>
>> jonathon
>>
>>
>> On 16/5/17 21:21, Thierry Onkelinx wrote:
>>> Dear Jonathon,
>>>
>>> Is ggplot2 listed in the DESCRIPTION file? It needs to be at least in
>>> the Suggests:
>>>
>>> Best regards,
>>>
>>> Thierry
>>>
>>> ir. Thierry Onkelinx
>>> Instituut voor natuur- en bosonderzoek / Research Institute for Nature
>>> and Forest
>>> team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
>>> Kliniekstraat 25
>>> 1070 Anderlecht
>>> Belgium
>>>
>>> To call in the statistician after the experiment is done may be no
>>> more than asking him to perform a post-mortem examination: he may be
>>> able to say what the experiment died of. ~ Sir Ronald Aylmer Fisher
>>> The plural of anecdote is not data. ~ Roger Brinner
>>> The combination of some data and an aching desire for an answer does
>>> not ensure that a reasonable answer can be extracted from a given body
>>> of data. ~ John Tukey
>>>
>>> 2017-05-16 13:12 GMT+02:00 Jonathon Love <jon at thon.cc
>>> <mailto:jon at thon.cc>>:
>>>
>>>     hi,
>>>
>>>     i'm receiving failures on the winbuilder, with it complaining that
>>>     ggplot2 can not be found:
>>>
>>>     https://win-builder.r-project.org/incoming_pretest/170516_
>> 125043_jmvcore_055/00install.out
>>>     <https://win-builder.r-project.org/incoming_pretest/
>> 170516_125043_jmvcore_055/00install.out>
>>>
>>>     now there are some mentions of ggplot2 in our code (but none in
>>>     our NAMESPACE, we always use the full namespace when calling
>>>     functions: `ggplot2::ggplot()`), allowing people to pass in
>>>     ggplot2 themes and for them to be handled correctly, but packages
>>>     that build on jmvcore don't *need* to use ggplot2. so we've been
>>>     able to avoid adding it as an import, which is great, because
>>>     ggplot2 brings quite a few dependencies.
>>>
>>>     our code works as intended, passes all tests with `R CMD check
>>>     --as-cran jmvcore`, etc.
>>>
>>>     however the win-builder is pinging us.
>>>
>>>     is there a way around this?
>>>
>>>     with thanks
>>>
>>>     jonathon
>>>
>>>     ______________________________________________
>>>     R-package-devel at r-project.org
>>>     <mailto:R-package-devel at r-project.org> mailing list
>>>     https://stat.ethz.ch/mailman/listinfo/r-package-devel
>>>     <https://stat.ethz.ch/mailman/listinfo/r-package-devel>
>>>
>>>
>>
>>
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