[Rd] Runnable R packages

[Rainer M Krug]

Sounds interesting. Do you have it on GitHub or similar?

Rainer

> On 8 Feb 2019, at 09:09, David Lindelof <lindelof using ieee.org> wrote:
> 
> Yesterday I wrote and submitted to CRAN a package `run`, which implements
> the ideas discussed in this thread. Given a package tarball
> foo_0.1.0.tar.gz, users will be able to run
> 
> Rscript -e "run::run('foo_0.1.0.tar.gz')"
> 
> which will pull all the dependencies of package `foo`, lookup a function
> `main` in that package's namespace, and call it.
> 
> It's an early draft but I'd appreciate any feedback (once its submission is
> accepted, of course).
> 
> Thanks all for your help and advice,
> 
> David
> 
> On Sat, Feb 2, 2019 at 3:37 PM Duncan Murdoch <murdoch.duncan using gmail.com>
> wrote:
> 
>> On 02/02/2019 8:27 a.m., Barry Rowlingson wrote:
>>> I don't think anyone denies that you *could* make an EXE to do all
>>> that. The discussion is on *how easy* it should be to create a single
>>> file that contains an initial "main" function plus a set of bundled
>>> code (potentially as a package) and which when run will install its
>>> package code (which is contained in itself, its not in a repo),
>>> install dependencies, and run the main() function.
>>> 
>>> Now, I could build a self-executable shar file that bundled a package
>>> together with a script to do all the above. But if there was a "RUN"
>>> command in R, and a convention that a function called "foo::main"
>>> would be run by `R CMD RUN foo_1.1.1.tar.gz` then it would be so much
>>> easier to develop and test.
>> 
>> I don't believe the "so much easier" argument that this requires a
>> change to base R.  If you put that functionality into a package, then
>> the only extra effort the user would require is to install that other
>> package.  After that, they could run
>> 
>> Rscript -e "yourpackage::run_main('foo_1.1.1.tar.gz')"
>> 
>> as I suggested before.  This is no harder than running
>> 
>> R CMD RUN foo_1.1.1.tar.gz
>> 
>> The advantage of this from R Core's perspective is that you would be
>> developing and maintaining "yourpackage", you wouldn't be passing the
>> burden on to them.  The advantage from your perspective is that you
>> could work with whatever packages you liked.  The "remotes" package has
>> almost everything you need so that "yourpackage" could be nearly
>> trivial.  You wouldn't need to duplicate it within base R.
>> 
>> Duncan Murdoch
>> 
>>> 
>>> If people think this adds value, then if they want to offer that value
>>> to me as $ or £, I'd consider writing it if their total value was more
>>> than my cost....
>>> 
>>> Barry
>>> 
>>> 
>>> On Sat, Feb 2, 2019 at 12:54 AM Abs Spurdle <spurdle.a using gmail.com> wrote:
>>>> 
>>>> Further to my previous post,
>>>> it would be possible to create an .exe file, say:
>>>> 
>>>> my_r_application.exe
>>>> 
>>>> That starts R, loads your R package(s), calls the R function of your
>> choice
>>>> and does whatever else you want.
>>>> 
>>>> However, I don't think that it would add much value.
>>>> But feel free to correct me if you think that I'm wrong.
>>>> 
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>>>> 
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>> 
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--
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany)

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