[Rd] package installation order

[Seth Falcon]

Dirk Eddelbuettel <edd at debian.org> writes:
> When trying to package the by-now-gargantuan Rmetrics for Debian (which is
> still ongoing), I looked around for some Depends builders. Turns out that
> BioC has this.   E.g. the following worked for:
>
> ## > install.packages("Biobase", repo="http://www.bioconductor.org")
> ## > repos <- Biobase:::biocReposList()
> ## > install.packages("pkgDepTools", repos=repos["bioc"])
> ## > library(pkgDepTools)
> ## Loading required package: graph
> ## Loading required package: RBGL
> ## > CRANdeps <- makeDepGraph(repos["cran"], type="source")
> ## > getInstallOrder("Rmetrics", CRANdeps, needed.only=FALSE)
>
> worked for me.  I meant to add some code for Graphviz visualization (or look
> for it, Seth et al probably already wrote it) but what you get from
> getInstallOrder() should suit your needs here.

makeDepGraph returns a graphNEL instance and Rgraphviz knows how to
plot those.  The entire graph will likely not produce a particularly
compelling visualization.  But you can subset the graph according to a
particular package's dependencies, etc.

+ seth

-- 
Seth Falcon | seth at userprimary.net | blog: http://userprimary.net/user/