[R] issue loading doBy library

[Gabor Grothendieck]

On Sun, Oct 23, 2011 at 8:10 AM, Giovanni Azua <bravegag at gmail.com> wrote:
> Hi Josh,
>
> Thank you for your feedback, after lot of trial and error the problem is finally solved.
>
> To solve this problem, I tried in this order:
>
> 1) uninstalling the two packages "Matrix" and "lme4" and reinstalling them.
> 2) uninstalling doBy and reinstalling it with and without 1)
> 3) upgrading to the latest R version and re-doing 1) 2)
>
> And finally 4) wiped all R traces from my Mac OS X 10.7.2 and re-installed the latest version. The latest Matrix version seems to have changed in the meanwhile so I was lucky and now it works.
>
> It seems to me that the whole concept of dependency analysis for installing packages in R is broken ... seems like the packages depend only on the package name and not on the specific versions which is wrong as in this case, chances are that a user will say in this "live lock" where will never find a "happy together" versions of Matrix and lme4 ... but well, you statisticians know better about chances :P
>

Version information can be incorporated. For example, note the imports
line of the zoo DESCRIPTION file where it specifies a specific version
or later of lattice:

https://r-forge.r-project.org/scm/viewvc.php/pkg/zoo/DESCRIPTION?view=markup&root=zoo

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