minimal with gem dependency to compass-0.12.2

$ mvn dependency:tree

[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building gems 0.0.0
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-dependency-plugin:2.1:tree (default-cli) @ gems ---
[INFO] com.example:gems:jar:0.0.0
[INFO] \- rubygems:compass:gem:0.12.2:compile
[INFO]    +- rubygems:sass:gem:3.2.5:compile
[INFO]    +- rubygems:chunky_png:gem:1.2.7:compile
[INFO]    \- rubygems:fssm:gem:0.2.10:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 8.778s
[INFO] Finished at: Thu Feb 07 11:49:50 IST 2013
[INFO] Final Memory: 33M/64M
[INFO] ------------------------------------------------------------------------

pom.xml

<?xml version="1.0"?>
<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.example</groupId>
  <artifactId>gems</artifactId>
  <version>0.0.0</version>
  <repositories>
    <repository>
      <id>rubygems-releases</id>
      <url>http://rubygems-proxy.torquebox.org/releases</url>
    </repository>
  </repositories>
  <dependencies>
    <dependency>
      <groupId>rubygems</groupId>
      <artifactId>compass</artifactId>
      <version>0.12.2</version>
      <type>gem</type>
    </dependency>
  </dependencies>
</project>