The state of the Common Lisp library ecosystem is probably the saddest thing about the language.

As the author says, the inbuilt standard library is hopelessly too small for modern requirements - even basics like string manipulation are only cursorily covered. And most of the third-party libraries out there are single-person projects, out of date, undocumented, or all three...

The language itself is still fantastic and, IMO, still superior to most other languages out there. But the lack of decent libraries is a major productivity killer.