我使用here指令在Ubuntu 12.10上安装Grails，但是在第3步出现错误，如下所示。
我得到的错误如下所示。我已经安装了Sun JDK，并设置了 JAVA_HOME ，并且 JAVA_HOME / bin 在路径上。
有人可以提出一些建议来解决这个问题吗？
/home/edgecase> $ sudo apt-get install grails-ppa
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
default-jre-headless:i386 : Depends: openjdk-7-jre-headless:i386 (>= 7~u3-2.1) but it is not going to be installed
openjdk-7-jre:i386 : Depends: openjdk-7-jre-headless:i386 (= 7u7-2.3.2a-1ubuntu1) but it is not going to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
/home/edgecase> $ java -version
java version "1.6.0_39"
Java(TM) SE Runtime Environment (build 1.6.0_39-b04)
Java HotSpot(TM) 64-Bit Server VM (build 20.14-b01, mixed mode)
请您参考如下方法:
由于未维护PPA，因此我们需要从网站上删除这些说明。请改用http://gvmtool.net/。
