anchor.diff:  
   [source,clojure]
   ----
  -{:deps 
  +{:deps
    {org.clojure/core.async {:mvn/version "0.3.465"}}
   
    :aliases
  
positive.code: * <<deps_and_cli#extra_deps,Add an optional dependency>>
  * <<deps_and_cli#override_deps,Override a dependency version>>
  * <<deps_and_cli#local_jar,Use a local jar on disk>>
  
  [[extra_paths]]
  === Include a test source directory
  
negative.code: {:deps
   {db/driver {:local/root "/path/to/db/driver.jar"}}}
  ----
  
  [[aot_compilation]]
  === Ahead-of-time (AOT) compilation
  
  When using https://clojure.github.io/clojure/clojure.core-api.html#clojure.core/gen-class[gen-class] or https://clojure.github.io/clojure/clojure.core-api.html#clojure.core/gen-interface[gen-interface], the Clojure source must be ahead-of-time compiled to generate the java class(es).
  
  This can be done by calling `compile`. The default destination for compiled class files is `classes/`, which needs to be created and added to the classpath:
  
  [source,shell]
  ----
  $ mkdir classes
  ----
  
  Edit `deps.edn` to add `"classes"` to the paths:
  [source,clojure]
  ----
  {:paths ["src" "classes"]}
  ----
  
  Declare a class with gen-class in `src/my_class.clj`:
  
  [source,clojure]
  ----
  (ns my-class)
  
  (gen-class
    :name my_class.MyClass
    :methods [[hello [] String]])
  
  (defn -hello []
    "Hello, World!")
  ----
  
  Then you can reference the class with `:import` in another source file `src/hello.clj`. Notice that the namespace is also added in `:require` so compilation can automatically find all dependent namespaces and compile them.
  
  [source,clojure]
  ----
  (ns hello
    (:require [my-class])
    (:import (my_class MyClass)))
  
  (defn -main [& args]
    (let [inst (MyClass.)]
      (println (.hello inst))))
  ----
  
  You can compile in the REPL or run a script to do the compilation:
  
  [source,shell]
  ----
  $ clj -e "(compile 'hello)"
  ----
  
  And then run the hello namespace:
  
  [source,shell]
  ----
  $ clj -m hello
  Hello, World!
  ----
  
  See <<xref/../../reference/compilation#,Compilation and Class Generation>> for a complete reference.
  