使用中遇到以下错误：
➜ Hime git:(master) npm install
> bcrypt@0.8.3 install /Users/yanhan/Hime/node_modules/bcrypt
> node-gyp rebuild
然后启动 mongodb：
mongod --dbpath /usr/local/var/mongodb/
2015-06-11T11:58:15.079+0800 I JOURNAL [initandlisten] journal dir=/usr/local/var/mongodb/journal
2015-06-11T11:58:15.080+0800 I JOURNAL [initandlisten] recover : no journal files present, no recovery needed
2015-06-11T11:58:15.095+0800 I JOURNAL [durability] Durability thread started
...
最后想要使用 node bin/run 报错：
➜ Hime git:(master) node bin/www
{ [Error: Cannot find module '../build/Release/bson'] code: 'MODULE_NOT_FOUND' }
js-bson: Failed to load c++ bson extension, using pure JS version
{ [Error: Cannot find module '../build/Release/bson'] code: 'MODULE_NOT_FOUND' }
js-bson: Failed to load c++ bson extension, using pure JS version
{ [Error: Cannot find module '../build/Release/bson'] code: 'MODULE_NOT_FOUND' }
js-bson: Failed to load c++ bson extension, using pure JS version
{ [Error: Cannot find module '../build/Release/bson'] code: 'MODULE_NOT_FOUND' }
js-bson: Failed to load c++ bson extension, using pure JS version
/Users/yanhan/Hime/node_modules/mongodb/lib/server.js:274
process.nextTick(function() { throw err; })
^
Error: Could not locate the bindings file. Tried:
→ /Users/yanhan/Hime/node_modules/bcrypt/build/bcrypt_lib.node
→ /Users/yanhan/Hime/node_modules/bcrypt/build/Debug/bcrypt_lib.node
→ /Users/yanhan/Hime/node_modules/bcrypt/build/Release/bcrypt_lib.node
→ /Users/yanhan/Hime/node_modules/bcrypt/out/Debug/bcrypt_lib.node
→ /Users/yanhan/Hime/node_modules/bcrypt/Debug/bcrypt_lib.node
→ /Users/yanhan/Hime/node_modules/bcrypt/out/Release/bcrypt_lib.node
→ /Users/yanhan/Hime/node_modules/bcrypt/Release/bcrypt_lib.node
→ /Users/yanhan/Hime/node_modules/bcrypt/build/default/bcrypt_lib.node
→ /Users/yanhan/Hime/node_modules/bcrypt/compiled/0.12.4/darwin/x64/bcrypt_lib.node
at bindings (/Users/yanhan/Hime/node_modules/bcrypt/node_modules/bindings/bindings.js:88:9)
at Object.<anonymous> (/Users/yanhan/Hime/node_modules/bcrypt/bcrypt.js:3:35)
at Module._compile (module.js:460:26)
at Object.Module._extensions..js (module.js:478:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Module.require (module.js:365:17)
at require (module.js:384:17)
at Object.<anonymous> (/Users/yanhan/Hime/common/util.js:1:76)
at Module._compile (module.js:460:26)
搜索了一下之后参考了stack overflow 上这个答案
http://stackoverflow.com/questions/21656420/failed-to-load-c-bson-exte...
但是还是不行。几个方法都试过了（包括改 index.js 里面的 bson 路径）
目前不确定到底是 bson 问题？还是 mogondb？还是？
谢谢帮助。
=================================
用 cnpm 重试，报错如下：
➜ Hime git:(master) rimraf node_modules/
➜ Hime git:(master) cnpm cache clean
➜ Hime git:(master) cnpm install
> bcrypt@0.8.3 install /Users/yanhan/Hime/node_modules/bcrypt
> node-gyp rebuild
gyp: /Users/yanhan/.node-gyp/0.12.4/common.gypi not found (cwd: /Users/yanhan/Hime/node_modules/bcrypt) while reading includes of binding.gyp while trying to load binding.gyp
gyp ERR! configure error
gyp ERR! stack Error: `gyp` failed with exit code: 1
gyp ERR! stack at ChildProcess.onCpExit (/usr/local/lib/node_modules/cnpm/node_modules/pangyp/lib/configure.js:345:16)
gyp ERR! stack at ChildProcess.emit (events.js:110:17)
gyp ERR! stack at Process.ChildProcess._handle.onexit (child_process.js:1074:12)
gyp ERR! System Darwin 14.3.0
gyp ERR! command "node" "/usr/local/lib/node_modules/cnpm/node_modules/pangyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /Users/yanhan/Hime/node_modules/bcrypt
gyp ERR! node -v v0.12.4
gyp ERR! pangyp -v v2.1.0
gyp ERR! not ok
> kerberos@0.0.12 install /Users/yanhan/Hime/node_modules/mongodb/node_modules/mongodb-core/node_modules/kerberos
> (node-gyp rebuild 2> builderror.log) || (exit 0)
npm WARN installMany nopt was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany npmlog was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany request was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany semver was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany tar was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany tar-pack was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany mkdirp was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany rc was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
npm WARN installMany rimraf was bundled with node-pre-gyp@0.6.4, but bundled package wasn't found in unpacked tree
/
> bson-ext@0.1.7 install /Users/yanhan/Hime/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext
> (node-pre-gyp install --fallback-to-build) || (node-gyp rebuild 2> builderror.log) || (exit 0)
gyp: /Users/yanhan/.node-gyp/0.12.4/common.gypi not found (cwd: /Users/yanhan/Hime/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext) while reading includes of binding.gyp while trying to load binding.gyp
gyp ERR! configure error
gyp ERR! stack Error: `gyp` failed with exit code: 1
gyp ERR! stack at ChildProcess.onCpExit (/usr/local/lib/node_modules/cnpm/node_modules/pangyp/lib/configure.js:345:16)
gyp ERR! stack at ChildProcess.emit (events.js:110:17)
gyp ERR! stack at Process.ChildProcess._handle.onexit (child_process.js:1074:12)
gyp ERR! System Darwin 14.3.0
gyp ERR! command "/usr/local/Cellar/node/0.12.4/bin/node" "/usr/local/lib/node_modules/cnpm/node_modules/pangyp/bin/node-gyp.js" "configure" "--fallback-to-build" "--module=/Users/yanhan/Hime/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext/build/Release/bson.node" "--module_name=bson" "--module_path=/Users/yanhan/Hime/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext/build/Release"
gyp ERR! cwd /Users/yanhan/Hime/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext
gyp ERR! node -v v0.12.4
gyp ERR! pangyp -v v2.1.0
gyp ERR! not ok
node-pre-gyp ERR! build error
node-pre-gyp ERR! stack Error: Failed to execute '/usr/local/Cellar/node/0.12.4/bin/node /usr/local/lib/node_modules/cnpm/node_modules/pangyp/bin/node-gyp.js configure --fallback-to-build --module=/Users/yanhan/Hime/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext/build/Release/bson.node --module_name=bson --module_path=/Users/yanhan/Hime/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext/build/Release' (1)
node-pre-gyp ERR! stack at ChildProcess.<anonymous> (/Users/yanhan/Hime/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext/node_modules/node-pre-gyp/lib/util/compile.js:83:29)
node-pre-gyp ERR! stack at ChildProcess.emit (events.js:110:17)
node-pre-gyp ERR! stack at maybeClose (child_process.js:1015:16)
node-pre-gyp ERR! stack at Process.ChildProcess._handle.onexit (child_process.js:1087:5)
node-pre-gyp ERR! System Darwin 14.3.0
node-pre-gyp ERR! command "node" "/Users/yanhan/Hime/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext/node_modules/.bin/node-pre-gyp" "install" "--fallback-to-build"
node-pre-gyp ERR! cwd /Users/yanhan/Hime/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext
node-pre-gyp ERR! node -v v0.12.4
node-pre-gyp ERR! node-pre-gyp -v v0.6.4
node-pre-gyp ERR! not ok
Failed to execute '/usr/local/Cellar/node/0.12.4/bin/node /usr/local/lib/node_modules/cnpm/node_modules/pangyp/bin/node-gyp.js configure --fallback-to-build --module=/Users/yanhan/Hime/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext/build/Release/bson.node --module_name=bson --module_path=/Users/yanhan/Hime/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext/build/Release' (1)
npm ERR! Darwin 14.3.0
npm ERR! argv "node" "/usr/local/lib/node_modules/cnpm/node_modules/.bin/npm" "--userconfig=/Users/yanhan/.cnpmrc" "--disturl=https://npm.taobao.org/mirrors/node" "--cache=/Users/yanhan/.cnpm" "--registry=https://registry.npm.taobao.org" "--node-gyp=/usr/local/lib/node_modules/cnpm/node_modules/pangyp/bin/node-gyp.js" "install"
npm ERR! node v0.12.4
npm ERR! npm v2.7.6
npm ERR! code ELIFECYCLE
npm ERR! bcrypt@0.8.3 install: `node-gyp rebuild`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the bcrypt@0.8.3 install script 'node-gyp rebuild'.
npm ERR! This is most likely a problem with the bcrypt package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node-gyp rebuild
npm ERR! You can get their info via:
npm ERR! npm owner ls bcrypt
npm ERR! There is likely additional logging output above.
npm ERR! Please include the following file with any support request:
npm ERR! /Users/yanhan/Hime/npm-debug.log
https://github.com/TooTallNate/node-gyp/issues/376
http://stackoverflow.com/questions/17967546/common-gypi-not-found-erro...
删~/.node_gyp，重装。