My project has some code that requires AOT compilation.
Below is a shortened version of my deps.edn. The only way I have found to compile some code before each test run is to add a -e (compile,'my.project.namespace) pair to the :main-opts. This requires knowledge of the exact namespaces that require compilation, which changes periodically during development. Even simple experimentation in a unit test may require a temporary change to the deps.edn which is very annoying.
{:paths ["src" "classes"]
:deps {}
:aliases {:test {:extra-paths ["test"]}
:test/cognitect {:extra-deps {com.cognitect/test-runner {:git/url "..." :sha "..."}}
:main-opts ["-e" "(compile,'my.project.namespace1)"
"-e" "(compile,'my.project.namespace2)"
"-e" "(compile,'my.project.namespace3)"
"-m" "cognitect.test-runner"]
:exec-fn cognitect.test-runner.api/test}}
This would be invoked with clj -M:test:test/cognitect.
Is there an easy way to compile the entire project (including tests) when -M (or -X) is invoked with a certain alias?
I know that -e can handle any Clojure expression so one option would be to write an entire mini program that will enumerate all the namespaces and call compile on them. I would be okay with this as long as the code is simple. Is this a good idea?
In general, how would one setup a deps.edn to AOT compile the entire project?
Take a look at tools.build: https://clojure.org/guides/tools_build
This is the core team's answer to this problem.