This is a well-known problem in the JVM world, not just Clojure. The most common approach is: Always use the latest versions, and don't break backwards-compatibility.
Most open-source Java and Clojure libraries are careful about not breaking backwards-compatibility. So in general, you're safe choosing the latest version of any library. Leiningen has the `:pedantic` option which can be set to warn or fail when there are possible dependency conflicts. Neither Clojure nor the JVM has explicit support for linking to specific versions of a library. Work-arounds exist, but they often increase overall complexity and lead to conflicts which are harder to debug. –S On Monday, March 13, 2017 at 4:13:19 PM UTC-4, arthur wrote: > > Hello All, > > > I have a general inquiry regarding conflicting dependencies in > Clojure projects and how they affect applications at runtime. I believe > this is a common problem faced by many languages in this day and age where > we try not to reinvent the wheel by depending on the work of others. > Basically: my application depends on libraries *A*, *B*, *C*, and *D*. > Libraries *B*, *C*, *D* *also* depend on library *A*, but all of us > depend on *different versions* of library *A.* Leiningen thankfully warns > us in many of these situations by suggesting exclusions. However, how can I > possibly know that something hasn't broken? Stringent testing can give a > certain degree of confidence that things are still working, but it would > seem to me that to ensure correctness, we should include *all* versions > of the dependencies and have the functions link to their respective > *versioned* identites. Does anyone have advice on how they solve these > kinds of problems on their codebases in the wild? Thankfully nothing has > broken yet (to my knowledge), but it seems we have very few assurances here > and the best we can do is *hope* nothing is broken. Any advice is much > appreciated. > > Thanks, > > Arthur > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
