Why isn't this using .bundle on macOS?

[malept]

@sgrif mentioned this in a "The Bikeshed" episode (starts at 3:18).

Currently, every platform ends in .so (see 57880e6). It used to be that everything had its own platform-specific extension, and there was a special case for .bundle to rename it to .dylib, but I don't remember why (it was at least a year and a half ago, and I foolishly forgot to document why).

In theory, it should be fine just changing the extension.

[sgrif]

In case Twitter goes away or is inaccessible for some folks, I had mentioned on there that:

In my (extremely limited) experience, literally renaming .dylib to .bundle fixed it which was very surprising.