On Fri, 7 Sep 2018 at 09:01, Duncan Murdoch <murdoch.dun...@gmail.com>
wrote:
>
> I think it's useful to think of 3 groups who might run tests:
>
> - authors
> - CRAN
> - other users of a package.
>
> What Hadley was arguing for is that CRAN should identify itself to a
> package, so that by default a package could run different tests for
> CRAN than for other users. I am arguing that they should run the same
> tests by default.
This seems like the crux. But there are occasions when authors want to
single out CRAN. Sometimes things just don't work on CRAN; the exact config
of CRAN servers is not always clear, so debugging can be hard; at some
point, it just gets easier to say skip_on_cran() or the equivalent. (The
same applies to some degree for e.g. appveyor/travis). I appreciate this is
an imperfect workaround. If the CRAN config were exactly reproducible eg
via a docker image, perhaps it wouldn't be necessary.
--
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