[R-SIG-Mac] CRAN-like M1mac test environment?

[Wollschlaeger, Daniel]

(This is a re-post from R-pkg-devel hoping to get more feedback)

A package of mine was recently archived from CRAN because one of its
examples results in a crash on the M1mac platform:
https://www.stats.ox.ac.uk/pub/bdr/M1mac/MeshAgreement.out

As I don't have access to a Mac, I'm very grateful for Macbuilder. However,
there, the package tests without errors (link likely to stop working):
https://mac.r-project.org/macbuilder/results/1670186023-a7f313b721c2b516/

One difference I noticed between the Macbuilder and CRAN systems is that
Macbuilder builds for aarch64-apple-darwin20 (64-bit), whereas CRAN builds
for aarch64-apple-darwin22.1.0 (64-bit). Moreover, Macbuilder uses R-4.2.1
whereas CRAN uses R-devel r83383.

The example leading to the crash uses a function from the imported package
cgalMeshes which relies on compiled code. cgalMeshes itself is on CRAN and
apparently tests without errors on M1mac. I would like to investigate
further how to prevent the crash, but it may depend on the MacOS version, or
on the R version. Are there publicly available options to test packages on a
system that is very similar to the CRAN M1mac in order to implement the
necessary changes to get the package back on CRAN?

Many thanks in advance

Daniel


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