title: Why does Maven want to download _all_ versions of Groovy?
body: <p>In the POM for my project I've put the following dependency:</p>
  
  <pre><code>&lt;dependency&gt;
      &lt;groupId&gt;org.codehaus.groovy&lt;/groupId&gt;
      &lt;artifactId&gt;groovy-all&lt;/artifactId&gt;
      &lt;version&gt;1.8.6&lt;/version&gt;
  &lt;/dependency&gt;
  </code></pre>
  
  <p>And the following compiler plugin:</p>
  
  <pre><code>&lt;plugin&gt;
      &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
      &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt;
      &lt;version&gt;2.4&lt;/version&gt;
      &lt;configuration&gt;
          &lt;compilerId&gt;groovy-eclipse-compiler&lt;/compilerId&gt;
          &lt;verbose&gt;true&lt;/verbose&gt;
      &lt;/configuration&gt;
      &lt;dependencies&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.codehaus.groovy&lt;/groupId&gt;
              &lt;artifactId&gt;groovy-eclipse-compiler&lt;/artifactId&gt;
              &lt;version&gt;2.6.0-01&lt;/version&gt;
          &lt;/dependency&gt;
      &lt;/dependencies&gt;
  &lt;/plugin&gt;
  </code></pre>
  
  <p>So I would expect that Maven downloads the 1.8.6 jar of Groovy, but instead it seems like it tries to download <em>every</em> jar ever published!</p>
  
  <pre><code>[WARNING] The POM for org.codehaus.groovy:groovy:jar:1.5.5-SNAPSHOT is missing, no dependency information available
  [WARNING] The POM for org.codehaus.groovy:groovy:jar:1.5.6-SNAPSHOT is missing, no dependency information available
  [WARNING] The POM for org.codehaus.groovy:groovy:jar:1.5.7-SNAPSHOT is missing, no dependency information available
  [WARNING] The POM for org.codehaus.groovy:groovy:jar:1.6-beta-1-SNAPSHOT is missing, no dependency information available
  [WARNING] The POM for org.codehaus.groovy:groovy:jar:1.6-beta-2-SNAPSHOT is missing, no dependency information available
  [WARNING] The POM for org.codehaus.groovy:groovy:jar:1.6-RC-1-SNAPSHOT is missing, no dependency information available
  [WARNING] The POM for org.codehaus.groovy:groovy:jar:1.6-RC-2-SNAPSHOT is missing, no dependency information available
  [WARNING] The POM for org.codehaus.groovy:groovy:jar:1.6.1-SNAPSHOT is missing, no dependency information available
  [WARNING] The POM for org.codehaus.groovy:groovy:jar:1.6.3-SNAPSHOT is missing, no dependency information available
  [WARNING] The POM for org.codehaus.groovy:groovy:jar:1.6.5-SNAPSHOT is missing, no dependency information available
  [WARNING] The POM for org.codehaus.groovy:groovy:jar:1.7-beta-1-SNAPSHOT is missing, no dependency information available
  [WARNING] The POM for org.codehaus.groovy:groovy:jar:1.7-rc-2-SNAPSHOT is missing, no dependency information available
  </code></pre>
  
  <p>What is causing this strange behavior?</p>