Hi Guix,

while writing the r-build-system and the CRAN importer I tested it by
packaging ggplot2 with all dependencies.  16 patches are attached; all
of them are very simple (this bodes well for the future of R on Guix).

To make sure ggplot2 actually works I did this:

    guix package -p ~/r-tests -i r r-ggplot2
    export R_LIBS_SITE="$HOME/r-tests/site-library/"
    ~/r-tests/bin/R

    > data(iris)
    > library(ggplot2)
    > ggplot(iris,aes(Sepal.Length,Sepal.Width)) + geom_point()

    (produces a scatter plot.)

~~ Ricardo