I have packages where I know CRAN and other test platforms do not have
all the resources to build the vignettes, for example, access to
databases. Previously I think putting
BuildVignettes: false
in the DESCRIPTION file resolved this, by preventing CRAN checks from
attempting to run the vignette code. (If it was not this, then there was
some other magic I don't understand.)
Now, when I specify --as-cran, the checks fail when attempting to check
R code from vignettes, even though I have "BuildVignettes: false" in the
DESCRIPTION file.
What is the mechanism for indicating that CRAN should not attempt to
check this code? Perhaps it is intentionally difficult - I can see an
argument for that. (For running tests there are environment variables,
e.g._R_CHECK_HAVE_MYSQL_, but using these really clutters up a vignette,
and it did not seem necessary to use them before.)
(The difficult also occurs on R-forge, possibly because it is using
--as-cran like settings.)
Paul
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