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<p>This is a meta-issue spread across many patches and mailing-list discussions.</p><h2>Problems</h2><ul><li>New users are frequently confused by the differences among require, use, import, and ns</li><li>Ahead-of-time-compiled Clojure sources break when internal Clojure APIs change</li></ul><h2>Tickets</h2><ul><li><a href="http://dev.clojure.org/jira/browse/CLJ-879">CLJ-879</a>: Allow :require to support a :refer clause</li><li><a href="http://dev.clojure.org/jira/browse/CLJ-461">CLJ-461</a>: require namespace implicitly</li><li><a href="http://dev.clojure.org/jira/browse/CLJ-322">CLJ-322</a>: Enhance AOT compilation process to emit classfiles only for explicitly-specified namespaces</li><li><a href="http://dev.clojure.org/jira/browse/CLJ-272">CLJ-272</a>: load/ns/require/use overhaul</li><li><a href="http://dev.clojure.org/jira/browse/CLJ-148">CLJ-148</a>: Poor reporting of symbol conflicts when using (ns)</li><li><a href="http://dev.clojure.org/jira/browse/CLJ-42">CLJ-42</a>: GC Issue 38: When using AOT compilation, &quot;load&quot;ed files are not reloaded on (require :reload 'name.space)</li><li><a href="http://dev.clojure.org/jira/browse/CLJ-8">CLJ-8</a>: GC Issue 3: Re-enable detection of circular loads</li></ul><h2>Discussions</h2><ul><li><a href="http://groups.google.com/group/clojure/browse_thread/thread/6584dca7fad37985">ns/use/require/import inconsistent and confusing</a>, Clojure thread started 11/30/2011</li><li><a href="http://groups.google.com/group/clojure-dev/browse_thread/thread/91b708ddb909affd">simplifying the require/use situation</a>, clojure-dev thread started 11/16/2011</li><li><a href="https://groups.google.com/d/topic/clojure-dev/4CtSVWcD15A/discussion">Namespace loading upon deftype/defrecord class init?</a>, clojure-dev thread started 1/1/2011</li><li><a href="http://groups.google.com/group/leiningen/browse_thread/thread/4690aab4bcccea25">Bugfix release for 1.4</a>, leiningen thread started 12/12/2010</li><li><a href="http://groups.google.com/group/clojure/browse_thread/thread/6ebaf57016766791">AOT, CLJ-322, Leiningen, and you</a>, Clojure thread started 12/12/2010</li><li><a href="http://groups.google.com/group/clojure-dev/browse_thread/thread/69823ce63dd94a0c">require namesapces implicitly</a>, clojure-dev thread started 9/26/2010</li><li><a href="http://groups.google.com/group/clojure-dev/browse_thread/thread/2198a6cb6f4f7a60">&quot;need&quot; - add to contrib?</a>, clojure-dev thread started 4/27/2010</li><li><a href="http://groups.google.com/group/clojure-dev/browse_thread/thread/b1c6971c3b3394">Suggestion: alias for single part namespaces</a>, clojure-dev thread started 4/7/2010</li><li><a href="http://onclojure.com/2010/02/17/managing-namespaces/">Managing Namespaces</a>, blog post by khinsen, 2/17/2010</li><li><a href="http://groups.google.com/group/clojure-dev/browse_thread/thread/46559fd9eb127bdd">ns/load/require/use overhaul</a>, clojure-dev thread started 2/13/2010</li><li><a href="http://groups.google.com/group/clojure/browse_frm/thread/9bbc290321fd895f/e6a967250021462a">Issue request: RT.load's &quot;don't load if already loaded&quot; mechanism breaks &quot;:reload-all&quot;</a>, clojure-dev thread started 2/6/2010</li><li><a href="http://groups.google.com/group/clojure/msg/3e9cbbe1a26af584">Datatypes and protocols - update</a>, clojure message 12/12/2009</li><li><a href="http://groups.google.com/group/clojure/browse_thread/thread/dbcfb0dc6699ec41">Better documentation and error messages are needed for the ns macro</a>, clojure thread started 11/10/2009</li></ul><h2>Sample Code</h2><ul><li><a href="http://code.google.com/p/clj-nstools/">clj-nstools</a>: permits any namespace to serve as a template for constructing other namespaces</li><li><a href="https://github.com/stuartsierra/need">need</a>: a macro to load Clojure namespaces</li></ul>