Similar to this question https://ask.clojure.org/index.php/7848/transitive-paths-current-project-unspecified-transitive
I am not sure how to reliably reproduce this, but I had a problem with dependencies not being picked up from a :local/root dependency, and my colleague found the linked question, and it helped me find a workaround.
In my case my full deps in the dependency project was:
{:paths ["src"]}
Changing it to:
{:paths ["src"]
 :deps {}}
made things work.
I do have another project with the same dependency, and it was happy with the no-deps version.
This was in a dependency of a dependency. So I have both these cases:
- Not working: project-a-> -dependency-1->dependency-2-path-only
- Working: project-b-> -dependency-1->dependency-2-path-only
(”Not working/Working” as in dependency-2-path-only not being on the classpath of  project-a, but on the classpath of project-b.)
Further... dependency-1 is in a sub directory of dependency-2-path-only.  So in dependency-2-path-only/dependency-1/deps.edn:
{:paths ["src"]
 :deps {d2/dependency-2-path-only {:local/root ".."}}}
I realize now, after having described all this that I could have made a repro instead.  Let me know if that is needed.
I'm currently on 1.10.3.967, btw.