I write a package foo which requires a package bar (from CRAN) to work. So in
the DESCRIPTION file I write Depends: bar. I would like it to be so that when
one installs foo, then it is automatically checked whether bar is installed,
and if not then bar is also installed at the same time. I remember having seen
packages which do so, but I can not figure out the mechanism
'Depends: bar' in the DESCRIPTION file does not solve the problem. Can anyone
help?
A related question: How to check programmatically that a specific package is
loaded?
Best regards
Søren
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