[Rd] R CMD check: unstated dependence on a standard package.

Henrik Bengtsson hb at stat.berkeley.edu
Fri Sep 8 01:14:07 CEST 2006

In the recent R-devel version, I receive the following error:

* checking whether the package can be loaded with stated dependencies
Error in doTryCatch(return(expr), name, parentenv, handler) :
	could not find function "packageDescription"
Error in library(R.oo) : .First.lib failed for 'R.oo'
Execution halted

It looks like this package (or one of its dependent packages) has an
unstated dependence on a standard package.  All dependencies must be
declared in DESCRIPTION.
See the information on DESCRIPTION files in the chapter 'Creating R
packages' of the 'Writing R Extensions' manual.

I found the following comment in NEWS.R-2.5.0dev under "CHANGES IN R
VERSION 2.4.0" related to two packages only:

	- throws an error if the standard packages 'methods' and
          'stats4' are imported from and not declared in the
          DESCRIPTION file.

When I add 'utils' to "Depends:" in the DESCRIPTION file the error
goes away.  Could you please confirm that you from now on have to
specify also the 'utils' package and other standard package in



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