I have a monorepo with a few deps.edn sub-projects. Some of the sub-projects depend on each other using :local/root coordinates. I would like to build one of the sub-projects as an uberjar, but I am running into FileNotFoundException exceptions that I can’t explain. Here is the relevant parts of the deps.edn subproject that is being built.

{
 ...
 :aliases {:uberjar {:extra-deps {com.github.seancorfield/depstar {:mvn/version "2.0.216"}
                                  erp12/clark-core                {:local/root "../clark-core"}
                                  ...}
                     :exec-fn    hf.depstar/uberjar
                     :exec-args  {:main-class erp12.clark.repl.main
                                  :aot true :compile-ns :all :jar "clark-repl-test.jar"
                                  :sync-pom true :group-id "erp12" :artifact-id "clark-repl" :version "0.0.1"}}}
 ...                                  
}

> clojure -X:uberjar
Execution error (FileNotFoundException) at erp12.clark.repl.main/loading (main.clj:1).
Could not locate erp12/clark/core/spark_session__init.class, erp12/clark/core/spark_session.clj or erp12/clark/core/spark_session.cljc on classpath. Please check that namespaces with dashes use underscores in the Clojure file name.

First off, you’re supposed to use :replace-deps with depstar — it runs as a tool, independent of your project — and then it computes the project basis based on the project deps.edn and the aliases you provide to depstar, and uses that separate classpath to figure out how to build the JAR file.

@erp12 You’re providing erp12/clark-core as a dependency for the CLI to run depstar itself which is pointless since depstar doesn’t need it.

But if that isn’t part of your regular :deps in the project deps.edn, you need to tell depstar which aliases to include — and you’ll want erp12/clark-core under that alias.

You probably want something like this:

{
 ...
 :aliases {:uberjar {:replace-deps {com.github.seancorfield/depstar {:mvn/version "2.0.216"}}
                     :exec-fn    hf.depstar/uberjar
                     :exec-args  {:main-class erp12.clark.repl.main
                                  :aot true :compile-ns :all :jar "clark-repl-test.jar"
                                  :aliases [:erp12]
                                  :sync-pom true :group-id "erp12" :artifact-id "clark-repl" :version "0.0.1"}}
              :erp12 {:extra-deps {
                                  erp12/clark-core                {:local/root "../clark-core"}
                                  ...}}
 ...                                  
}