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lein plugin to reject dependency graphs with common user surprises
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README.md

lein-pedantic

A Leiningen plugin to reject dependency graphs with common user surprises.

Example

(defproject sample "0.0.1"
  :dependencies [[org.clojure/clojure "1.4.0"]
                 [com.cemerick/friend "0.0.9"]
                 [noir "1.3.0-beta9"]])

Normally with lein this project will use [ring/ring-core "1.0.2"] due to friend, and will use [ring/ring-jetty "1.1.0"] due to noir. These version do not work together and resulted in issue https://github.com/cemerick/friend/issues/15.

Using lein-pedantic will produce a message and fail the dependency resolution.

Failing dependency resolution because:

[com.cemerick/friend "0.0.9"] -> [ring/ring-core "1.0.2"]
  is overruling
[noir "1.3.0-beta9"] -> [compojure "1.0.4"] -> [ring/ring-core "1.1.0"]

Please use [com.cemerick/friend "0.0.9" :exclusions [ring/ring-core]] to get [ring/ring-core "1.1.0"] or use [noir "1.3.0-beta9" :exclusions [ring/ring-core]] to get [ring/ring-core "1.0.2"].

Usage

lein-pedantic requires leiningen 2.

Put [lein-pedantic "0.0.3"] into the :plugins vector of your :user profile. It automatically hooks into leiningen and will run any time leiningen tries to pull dependencies.

If you would prefer a warning then failure then add :pedantic :warn to the project.clj. The lein repl task will default to a warning, as it adds dependencies to the project that you do not have control over.

Rules

The rules lein-pedantic uses to fail a dependency resolution are approximately:

  1. A top level dependency is overruled by another version.

  2. A transitive dependency is overruled by an older version.

License

Copyright © 2012 Nelson Morris

Distributed under the Eclipse Public License, the same as Clojure.

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