radiant 的插件不能卸载也不能安装的

$rake ray:extension:install name=paperclipped
(in /Users/apple/workspace/portal-cms)
git submodule -q add git://github.com/kbingman/paperclipped.git vendor/extensions/paperclipped
'vendor/extensions/paperclipped' already exists in the index
rake aborted!
Command failed with status (1): [git submodule -q add git://github.com/kbin...]

(See full trace by running task with --trace)

错误提示如上：

实际是之前的git submodule没有卸载干净

需要做的是：

1. .gitmodules
2. .git/config
3. index/commit

分别修改前两个文件把对应的submodule删除就行
最后一个要运行

$git rm --cached vendor/extensions/haml_filter
rm 'vendor/extensions/haml_filter'
hlv@hlvdeimac~/workspace/portal-cms (master)
$git rm --cached vendor/extensions/paperclipped
rm 'vendor/extensions/paperclipped'

关于git submodule参考这里