[R] error preparing a package for lazy loading with R CMD

[Prof Brian Ripley]

On Sun, 30 Jan 2005, Patrick Giraudoux H wrote:

> Trouble just solved by Uwe Ligge! See below:
>
>>> You have a wrong "Built" field in your DESCRIPTION file!!!
>>> "Built: R 2.0.1;windows". Please don't specify such a line yourself, "R 
>>> CMD build" does it for you.

Actually, installation does it: build adds Packaged: (which I have alwasys 
thought potentially confusing).

> Ashes on my head and all these sort of things...

One of the changes that has been in 2.0.1 patched for some time is (from 
its NEWS)

PACKAGE INSTALLATION CHANGES

     o	A package DESCRIPTION file which contains a Built field (it
 	should not!) is now worked around, with loud warnings.


BTW, you would have benefited from having read (in ONEWS now)

 	Packages are by default installed using lazy loading if they
 	have more than 25Kb of R code and did not use a saved image.
 	This can be overridden by INSTALL --[no-]lazy or via a field
 	in the DESCRIPTION file.  Note that as with --save, any other
 	packages which are required must be already installed.

and then you would have not found well-documented things `strange'.

The NEWS file is the `release notes' of R and does need to be read at each 
new release.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
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