What is Leiningen used for in Clojure?

Leiningen scaffolds projects, manages deps, runs REPLs/tests/builds—your Clojure Swiss Army knife.

How do I create a new Clojure project with Leiningen?

`lein new app my-app && cd my-app`. Edits `project.clj`, then `lein repl` or `lein run`.

Leiningen vs Clojure CLI tools—which is better?

Leiningen for complex projects with plugins/profiles; CLI for lightweight scripts. Use both.

Leiningen Unleashed: The Clojure Build Tool That Feels Like Magic

Everyone thought Clojure devs were stuck in the stone age of builds. Leiningen proves them wrong—it's a shape-shifting beast that turns code into apps with zero fuss.

Open Source Beat Apr 12, 2026 4 min read

Leiningen project structure diagram with project.clj at center, glowing like a reactor core

⚡ Key Takeaways

Leiningen is Clojure's Swiss Army knife: scaffolds, builds, profiles—like npm but for functional JVM magic. 𝕏
Master profiles and plugins for dev/prod bliss—env vars, linters, auto-reload without bloat. 𝕏
Unique edge: Leiningen foreshadows REPL-driven AI dev; Unix-small, composing infinitely. 𝕏

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Open Source Beat

Community-driven. Code-first.

#Clojure build tool #Clojure tutorial #Leiningen #lein profiles #project.clj

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Originally reported by Dev.to

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