oukokudongdeMBP:~wangguodong$sudonpminstall-gkarmaPassword:[email protected]:wanted:{"node":"~0.8||~0.10"}(current:{"node":"0.12.2","npm":"2.7.4"})[email protected]/usr/local/lib/node_modules/karma/node_modules/chokidar/node_modules/fseventsnode-gyprebuildgypWARNinstallgotanerror,rollingbackinstallgypERR!configureerrorgypERR!stackError:EPERM,utime'/Users/wangguodong/.node-gyp/0.12.2'gypERR!stackatError(native)gypERR!SystemDarwin14.1.0gypERR!command"node""/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js""rebuild"gypERR!cwd/usr/local/lib/node_modules/karma/node_modules/chokidar/node_modules/fseventsgypERR!node-vv0.12.2gypERR!node-gyp-vv1.0.3gypERR!notoknpmWARNoptionaldepfailed,[email protected]