I checked the docs and issues and don't see a linter that I could use to detect (known) lazy-sequence-producing functions. Usecase: it's idiomatic and easy to use the 2 (or more) arities of functions like map and filter , however, in a codebase that doesn't need to be lazy most of the time, I'd discourage their uses and would recommend the eager ...v versions or - even better - transducers. The :discouraged-var linter could be an option, however in most cases I'd want to discourage only specific arities. Is there a way to do this currently, and if not, would it be in line with clj-kondo's goals to add a linter like this?