[Rd] Apple M1 CRAN checks

[Blätte, Andreas]

Dear Gilbert, 

it would obviously great to have something like Win-builder/R-hub for the architecture of the M1 macs.  I had an issue with the RcppCWB package I maintain in January and I could not get hold of a M1 Mac mini quickly. So I resorted to hiring one with MacStadium (https://www.macstadium.com/). That worked nicely and I had a testing environment within a few hours. But it is an expensive solution (~ 100$ per month)!

In the meantime I got myself a Mac mini... Great machine, but obviously not everybody should not be forced to buy one. So it would be great to learn whether there are plans to offer testing environments for Apple M1. 

Andreas Blätte 


Am 28.02.21, 16:50 schrieb "R-devel im Auftrag von Paul Gilbert" <r-devel-bounces using r-project.org im Auftrag von pgilbert902 using gmail.com>:

    If there was a response to the "how can I test it out" part of this 
    question then I missed it. Can anyone point to a Win-builder like site 
    for testing on M1mac, or to the M1mac results from testing packages 
    already on CRAN?  They still do not seem to be on the CRAN daily site. 
    Even a link to the 'Additional issues' on M1 Mac on the results pages 
    would be helpful because it does not seem to be in an obvious place. I 
    am trying to respond to a demand to relax or remove some package testing 
    that fails because M1mac gives results outside my specified tolerances.

    The tests in question (in package EvalEst) have been used since very 
    early R versions (0.16 circa 1995), and used on Splus prior to that. 
    There has been a need to adjust tolerances occasionally, but they have 
    been stable for a long time (more than 20 years I believe). Since these 
    tests date from a time when simple double precision was the norm, the 
    tolerances are already fairly relaxed so I hesitate to adjust them with 
    actually examining the results.

    Paul Gilbert

    On 2021-02-22 3:30 a.m., Travers Ching wrote:
    > I noticed CRAN is now doing checks against Apple M1, and some packages are
    > failing including a dependency I use.
    > 
    > Is building on M1 now a requirement, or can the check be ignored? If it's a
    > requirement, how can one test it out?
    > 
    > Travers
    > 
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