test-runner VS clj-new

> I had to Grok Integrant again because I wouldn't understand my project otherwise.

You can use plain functions and `reduce` for system composition if you want. Take a look at how Biff does it: https://biffweb.com/p/thinking-about-system-composition/

DI should be used sparingly for the top-level, stateful pieces of your system. If you can't understand your program without it, is this a problem with Clojure itself or the design of the program?

> And when it comes to best practices around unit testing, it's another one of those things where no one in the community seems to be sharing much about it.

The `clojure.test` API has stayed the same for the last decade and that's what you'll see in most projects. Is the concern about how to run tests? Both of the following libraries work well:

Minimal test runner: https://github.com/cognitect-labs/test-runner

:aliases {:test {:extra-paths ["test"] :extra-deps {io.github.cognitect-labs/test-runner {:git/url "https://github.com/cognitect-labs/test-runner.git" :git/sha "8c3f22363d63715de4087b038d79ae0de36a3263"}} :main-opts ["-m" "cognitect.test-runner"] :exec-fn cognitect.test-runner.api/test}}

Cognitect's test-runner is probably the most commonly used approach with deps.edn and the CLI: https://github.com/cognitect-labs/test-runner

clj-new library allows you to generate new projects from templates. In contrast to the previous example, this time you suggested adding a new alias globally in ~/.clojure/deps.edn:

These steps aren't unique for the test-lib and you'll need to repeat them again when creating another libraries. Fortunately, there is a project called clj-new that will save you from doing similar work again and again.

My new favourite thing is clj-new. Quoth the readme:

I use Sean Corfield's clj-new project to initialize new Clojure projects. Install it for your environment according the instructions in his README, then run clj -X:new :template app :name kiramclean/test-cli to generate a new Clojure project (but replace kiramclean/test-cli with /).

FYI, https://github.com/seancorfield/clj-new