无法安装hubot - 无法满足npm依赖性

在尝试部署hubot时,npm一直在抱怨未满足的依赖关系.该文档没有解释如何解决这个问题.

yum install npm --enablerepo=epel
yum install nodejs --enablerepo=epel
cd /opt
git clone https://github.com/github/hubot.git
cd hubot/
./bin/hubot --create acebot
npm install -g hubot coffee-script
...

npm http 200 https://registry.npmjs.org/formidable/-/formidable-1.0.14.tgz
npm http 200 https://registry.npmjs.org/uid2/-/uid2-0.0.2.tgz
/usr/bin/hubot -> /usr/lib/node_modules/hubot/bin/hubot
npm WARN unmet dependency /usr/lib/node_modules/block-stream requires inherits@'~2.0.0' but will load
npm WARN unmet dependency undefined,
npm WARN unmet dependency which is version undefined
npm WARN unmet dependency /usr/lib/node_modules/fstream requires inherits@'~2.0.0' but will load
npm WARN unmet dependency undefined,
npm WARN unmet dependency which is version undefined
npm WARN unmet dependency /usr/lib/node_modules/fstream-ignore requires inherits@'2' but will load
npm WARN unmet dependency undefined,
npm WARN unmet dependency which is version undefined
npm WARN unmet dependency /usr/lib/node_modules/fstream-npm requires inherits@'2' but will load
npm WARN unmet dependency undefined,
npm WARN unmet dependency which is version undefined
npm WARN unmet dependency /usr/lib/node_modules/glob requires inherits@'2' but will load
npm WARN unmet dependency undefined,
npm WARN unmet dependency which is version undefined
npm WARN unmet dependency /usr/lib/node_modules/npmconf requires inherits@'~2.0.0' but will load
npm WARN unmet dependency undefined,
npm WARN unmet dependency which is version undefined
npm WARN unmet dependency /usr/lib/node_modules/tar requires inherits@'2' but will load
npm WARN unmet dependency undefined,
npm WARN unmet dependency which is version undefined
coffee-script@1.6.3 /usr/lib/node_modules/coffee-script

packages.json文件包含一个依赖项列表,我假设应该自动解析它们.

  "dependencies": {
    "coffee-script":      "1.6.3",
    "optparse":           "1.0.4",
    "scoped-http-client": "0.9.8",
    "log":                "1.4.0",
    "express":            "3.3.4"
  },

任何人都可以解释为什么npm无法安装hubot？

更新

我仍然不明白为什么它不起作用,但在运行npm install之前运行npm install -g hubot coffee-script似乎已经过了这个错误.我需要在发布答案之前验证这一点