Unused-deps

Find unused dependencies in deps.edn or project.clj.

Installation

Babashka

With babashka you have the following options:

Babashka tasks

Add this to your bb.edn:

:deps {io.github.borkdude/unused-deps {:git/sha "<latest-sha>"}}
:tasks {unused-deps {:task (prn (exec 'borkdude.unused-deps/unused-deps))
                     :exec-args {...} ;; other options here
                    }}

Then run bb unused-deps. For more information about babashka tasks, look here.

bbin

To install this tool with bbin:

$ bbin install io.github.borkdude/unused-deps

Then run in your project:

$ unused-deps
{:unused-deps [[clj-kondo/clj-kondo {:mvn/version "2025.04.07"}]]}

Clojure

You can use the borkdude.unused-deps/exec-fn as an :exec-fn in deps.edn.

Programmatic API

Require the namespace borkdude.unused-deps and use the unused-deps function.

Options

Here are some options with examples which are hopefully self-explanatory. If not, bug me on slack or make a Github issue.

--root-dir .
--deps-file deps.edn / project.clj (relative to root-dir)
--classpath (optional, normally derived from deps-file)
--source-paths src (default)

The source paths are checked for namespaces that are required. If there is a .jar file that doesn't contain any of these namespaces it's considered unused.

Limitations

• :local/root isn't supported yet (should be easy to add)

False positives

• Some libraries, such as JDBC drivers, register themselves on the classpath and don't have any statically detectable code. These libraries might still be used but are reported as unused.

License

MIT, see LICENSE.