Tested with Arq 5.
I encountered some issues trying to add my existing SSH key pairs with Arq. I saw errors like:
[path to key]: Key 'OPENSSH' is not supported.
or
Install ImageMagick for image conversion:
brew install imagemagick
Install tesseract for OCR:
brew install tesseract --all-languages
Or install without --all-languages
and install them manually as needed.