Brim has traditionally supported macOS, but most of that time has been in the era of Intel-based Macs. Apple has more recently introduced their Macs based on the M1 chip. Smoke tests have confirmed that the Mac releases we currently ship seem to run fine on them. However, when conditions allow we'd surely like to improve our coverage here. Two things come to mind:

1. GitHub Actions will need to provide runners based on M1 Macs (tracked by virtual-environments/2187) so we can run our CI on them and confirm that we don't have M1-specific bugs
2. We'd want to start building macOS artifacts that include the Electron with M1 support to deliver the best possible performance on these platforms