maven-maven 编译 Velocity 源码出错

Question

从Velocity 的trunk分支http://svn.apache.org/repos/asf/velocity/engine/trunk拉下来的代码，用mvn install ，报错，编译结果如下：
[INFO] Scanning for projects...
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR]
[ERROR] The project org.apache.velocity:velocity-engine-parent:2.0.0-SNAPSHOT
(F:velocity-trunkpom.xml) has 1 error
[ERROR] Non-resolvable parent POM: Could not find artifact org.apache.veloci
ty:velocity-master:pom:1-SNAPSHOT and 'parent.relativePath' points at wrong loca
l POM @ line 25, column 13 -> [Help 2]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e swit
ch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildin
gException
[ERROR] [Help 2] http://cwiki.apache.org/confluence/display/MAVEN/UnresolvableMo
delException

编译信息里的[Help 1]的wiki也不存在，该怎么解决呢？

Answer 1

看这个错误：The project org.apache.velocity:velocity-engine-parent:2.0.0-SNAPSHOT(F:velocity-trunkpom.xml) has 1 error，你将velocity-engine-parent也check下来。
如果你有eclipse，最好下载m2eclipse插件，这样在install之前能看到pom的错误。

Answer 2

试了下，删除主pom里的

<parent>
<artifactId>velocity-master</artifactId>
<groupId>org.apache.velocity</groupId>
<version>1-SNAPSHOT</version>
</parent>

即可