On 2025-11-21 6:53 p.m., Jordan Martinetti wrote:
Hello I am a new CRAN author working on Windows. I tested my package locally
and it worked great and passed CRAN testing when I initially uploaded.
Yesterday I got an email saying it failed on M1mac. I don't have a mac machine
to do testing on so i'm unsure how I can test my package before uploading to
CRAN and hoping it passes.
While I don't expect a significant portion of users of my package to work on
mac, I would rather not skip mac testing and try to work on as many platforms
as possible. How can I test my package on mac, without owning a mac, so that I
know it will work before uploading to CRAN?
If you use Github actions for testing, you can choose a Mac machine to
run on. I don't know what versions of macOS they have available.
Here are some lines from the YAML file for one of my packages that is
tested on Windows, Ubuntu and macOS:
R-CMD-check:
runs-on: ${{ matrix.config.os }}
name: ${{ matrix.config.os }} (${{ matrix.config.r }})
strategy:
fail-fast: false
matrix:
config:
- {os: windows-latest, r: 'release'}
- {os: windows-latest, r: 'devel'}
- {os: ubuntu-latest, r: 'devel', http-user-agent: 'release'}
- {os: macos-latest, r: 'devel'}
These were originally based on the code from the `usethis` package; I
don't know how far it has diverged by now.
If you're not using Github, Gitlab or something similar, you should.
Duncan
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