On Mon, 9 Aug 2004, Kurt Hornik wrote: > >>>>> Prof Brian Ripley writes: > > > According to R-exts: > > > The second purpose for @file{install.R} is to hold code that needs > > to be executed each time the package is attached, after the image is > > loaded. Few packages have a need for such code so @file{install.R} > > is normally an empty file. > > > The optional file @file{R_PROFILE.R} is executed before the code in > > the @file{R} subdirectory and should be used to set up an > > environment needed only to evaluate the code (which is run with the > > @option{--vanilla} command-line flag). Very few packages will need > > such code. Indeed, both @file{install.R} and @file{R_PROFILE.R} > > should be viewed as experimental; the mechanism to execute code > > before attaching or installing the package may change in the near > > future. > > > (Actually it's during loading, not attaching, a namespace, for packages > > with namespaces.) > > > Looking on CRAN, it seems that two packages use R_PROFILE.R for > > `options(echo=FALSE)', which does not do anything useful AFAICS. A > > non-empty install.R is used for > > > require(methods) > > require(boot) > > require("Hmisc") > > data(Wcrit.R) > > > and that's not the intention (and in particular require() should have its > > return value checked!) -- this is best done in .First.lib/.onLoad. > > > One problem is that the package has no way to prevent a saved image being > > forced with INSTALL --save. > > > > Since this mechanism is a maintenance nightmare (especially with > > lazy-loading +/- saving images) I propose we drop it for 2.0.0. > > Instead, just as for lazy-loading, we should have a field in the > > DESCRIPTION file, with > > > SaveImage: yes > > > forcing saving the image, and any other value forcing not saving it. > > Fine with me. > > Can we perhaps agree to allow both yes/no and true/false for such > logical package DESCRIPTION metadata (and also irrespective of case)?
I've allowed yes/Yes and no/No already. I can fairly easily allow true/false, but FaLSe is a little more difficult .... It looks like Bioconductor has many examples so it will take longer to convert those. The new mechanism is in place now, though. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-devel