Seems like lein-jmh doesn't respect :source-paths in project.clj.
jmh.edn runs with only source files from under src and works fine.
This can be run with lein jmh.
jmh-other-src-files.edn relies on more_src/jmh_test_more_src/more_core.clj.
This can be run with lein jmh '{:file "jmh-other-src-files.edn"}' and explodes
with:
java.lang.RuntimeException: value did not resolve to a fn: jmh-test-more-src.more-core/more-gen-fn