2009/10/25 Uwe Ligges <ligges@statistik.tu-dortmund.de>

>
>
> Rainer M Krug wrote:
>
>> Hi
>>
>> I am using Ubuntu Hardy, and I installing many packages from source. I am
>> keeping my R packages fairly up to date.
>>
>> My question is: is there a way, of keeping the source packages, so that
>> when
>> I am installing a new version of R, an update.packages(checkBuilt=TRUE)
>> will
>> only fetch the packages when newer ones are available, but otherwise will
>> use the local copies?
>>
>> To rephrase it, is it possible to have some kind of local repository for
>> the
>> source packages which are installed, so that only packages are downloaded
>> when newer ones are available? I could use destdir to specify the
>> directory
>> in which to save the source files of the packages, but how can I use this
>> directory as a first choice, and only download if a newer version exists?
>>
>> Rainer
>>
>>
>
>
Hi Uwe


> I think it won't work out of the box, but you can do it with little
> efforts. The probably easiest way is to
>
>
That's a pity - I think it would be an usefull feature, if this could be
done automatically.


> 1) make the local directory of source packages a repository by adding a
> PACKAGES file using write_PACKAGES() from package tools,
> 2) choose your local repository first on the list of repositories and
> second a repository on a CRAN and/or BioC mirror etc.,
> 3) use update.packages() and it will grab from your first repository if
> there is no repository with a newer version number.
>
>
This sounds easy enough - I'll look into that.

Thanks a lot,

Rainer



> Best,
> Uwe Ligges
>
>
>
>


-- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology,
UCT), Dipl. Phys. (Germany)

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