[R-pkg-devel] How to create a macos-arm64 virtual machine/cloud environment to debug R package?

This is just a punt from a quick glance at your tests. Try using the
following on your local build to ensure it's not a time zone issue

TZ=NZ R CMD check --as-cran

Apologies if this is just noise but whenever I've had issues with
datetimes and mac tests this is the first thing I check.

Tim




On Wed, 6 Dec 2023, at 9:28 AM, Vincent van Hees wrote:

Hello,

What is the recommended way to create a virtual machine or cloud based R
environment for debugging R package issues specific to OS macos-arm64?

Details:
CRAN results show macos-arm64 specific problems for my package:
https://cran.r-project.org/web/checks/check_results_GGIR.html. I am able
to
reproduce them with https://mac.r-project.org/macbuilder/submit.html. I
suspect something goes wrong with the timestamp creation or handling as
that has caused issues with this OS for me in the past. All this relates to
this
<
https://github.com/wadpac/GGIR/blob/master/tests/testthat/test_part5_analyseRest.R

test for this
<https://github.com/wadpac/GGIR/blob/master/R/g.part5.analyseRest.R>
function, that in the process calls this
<https://github.com/wadpac/GGIR/blob/master/R/POSIXtime2iso8601.R> short
function. I have been trying some edits locally and re-submitting them to
macbuilder a couple of times to no avail. To debug this efficiently it
would be good to have access to an R environment for this OS. I do not have
a physical macos myself.

Vincent

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