macOS: migrating Signal

macOS, really?

Disclaimer: turns out quite a few people across creative communities, from artists to open source developers to die-hard legacy UNIX enthusiasts use macOS as a daily driver. Yes, I know. Not fully open source (though Darwin is and some of the userspace is), but a weird mix of NeXTSTEP, FreeBSD & even some NetBSD code intertwined with Apple’s own free & non-free components. And yet, there are solid uses for it, so without further ado, let’s rock!