npm install gulp-sass -g 失败为什么？

Question

这是安装失败的报错：

C:\Users\xuj20>npm install gulp-sass -g

> node-sass@4.5.2 install C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\node-sass
> node scripts/install.js

Downloading binary from https://github.com/sass/node-sass/releases/download/v4.5.2/win32-x64-48_binding.node
Cannot download "https://github.com/sass/node-sass/releases/download/v4.5.2/win32-x64-48_binding.node":

connect ECONNREFUSED 127.0.0.1:443

Hint: If github.com is not accessible in your location
      try setting a proxy via HTTP_PROXY, e.g.

      export HTTP_PROXY=http://example.com:1234

or configure npm proxy via

      npm config set proxy http://example.com:8080

> node-sass@4.5.2 postinstall C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\node-sass
> node scripts/build.js

Building: D:\node\node.exe C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\node-gyp\bin\node-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --libsass_ldflags= --libsass_library=
gyp info it worked if it ends with ok
gyp verb cli [ 'D:\\node\\node.exe',
gyp verb cli   'C:\\Users\\xuj20\\AppData\\Roaming\\npm\\node_modules\\gulp-sass\\node_modules\\node-gyp\\bin\\node-gyp.js',
gyp verb cli   'rebuild',
gyp verb cli   '--verbose',
gyp verb cli   '--libsass_ext=',
gyp verb cli   '--libsass_cflags=',
gyp verb cli   '--libsass_ldflags=',
gyp verb cli   '--libsass_library=' ]
gyp info using node-gyp@3.6.0
gyp info using node@6.10.2 | win32 | x64
gyp verb command rebuild []
gyp verb command clean []
gyp verb clean removing "build" directory
gyp verb command configure []
gyp verb check python checking for Python executable "python2" in the PATH
gyp verb `which` failed Error: not found: python2
gyp verb `which` failed     at getNotFoundError (C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:13:12)
gyp verb `which` failed     at F (C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:68:19)
gyp verb `which` failed     at E (C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:80:29)
gyp verb `which` failed     at C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:89:16
gyp verb `which` failed     at C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\isexe\index.js:42:5
gyp verb `which` failed     at C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\isexe\windows.js:36:5
gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:123:15)
gyp verb `which` failed  python2 { Error: not found: python2
gyp verb `which` failed     at getNotFoundError (C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:13:12)
gyp verb `which` failed     at F (C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:68:19)
gyp verb `which` failed     at E (C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:80:29)
gyp verb `which` failed     at C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:89:16
gyp verb `which` failed     at C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\isexe\index.js:42:5
gyp verb `which` failed     at C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\isexe\windows.js:36:5
gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:123:15) code: 'ENOENT' }
gyp verb check python checking for Python executable "python" in the PATH
gyp verb `which` failed Error: not found: python
gyp verb `which` failed     at getNotFoundError (C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:13:12)
gyp verb `which` failed     at F (C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:68:19)
gyp verb `which` failed     at E (C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:80:29)
gyp verb `which` failed     at C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:89:16
gyp verb `which` failed     at C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\isexe\index.js:42:5
gyp verb `which` failed     at C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\isexe\windows.js:36:5
gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:123:15)
gyp verb `which` failed  python { Error: not found: python
gyp verb `which` failed     at getNotFoundError (C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:13:12)
gyp verb `which` failed     at F (C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:68:19)
gyp verb `which` failed     at E (C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:80:29)
gyp verb `which` failed     at C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\which\which.js:89:16
gyp verb `which` failed     at C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\isexe\index.js:42:5
gyp verb `which` failed     at C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\isexe\windows.js:36:5
gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:123:15) code: 'ENOENT' }
gyp verb could not find "python". checking python launcher
gyp verb could not find "python". guessing location
gyp verb ensuring that file exists: C:\Python27\python.exe
gyp ERR! configure error
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
gyp ERR! stack     at Object.failNoPython (C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\node-gyp\lib\configure.js:482:19)
gyp ERR! stack     at Object.<anonymous> (C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\node-gyp\lib\configure.js:508:16)
gyp ERR! stack     at C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\graceful-fs\polyfills.js:284:29
gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:123:15)
gyp ERR! System Windows_NT 10.0.15063
gyp ERR! command "D:\\node\\node.exe" "C:\\Users\\xuj20\\AppData\\Roaming\\npm\\node_modules\\gulp-sass\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
gyp ERR! cwd C:\Users\xuj20\AppData\Roaming\npm\node_modules\gulp-sass\node_modules\node-sass
gyp ERR! node -v v6.10.2
gyp ERR! node-gyp -v v3.6.0
gyp ERR! not ok
Build failed with error code: 1
C:\Users\xuj20\AppData\Roaming\npm
`-- (empty)

npm ERR! Windows_NT 10.0.15063
npm ERR! argv "D:\\node\\node.exe" "D:\\node\\node_modules\\npm\\bin\\npm-cli.js" "install" "gulp-sass" "-g"
npm ERR! node v6.10.2
npm ERR! npm  v3.10.10
npm ERR! code ELIFECYCLE

npm ERR! node-sass@4.5.2 postinstall: `node scripts/build.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the node-sass@4.5.2 postinstall script 'node scripts/build.js'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the node-sass package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node scripts/build.js
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs node-sass
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls node-sass
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     C:\Users\xuj20\npm-debug.log
npm ERR! code 1

看了一下，好像是缺少python环境，但是我也已经下载安装了python;求助，需要怎么做？

Answer 1

node-sass需要下载二进制，换源也不行

将下面的添加到 ~/.npmrc，修改node-sass的源就好了

sass_binary_site=https://npm.taobao.org/mirrors/node-sass/

还有其它的也可以一起添加，或者需要的时候添加上

phantomjs_cdnurl=https://npm.taobao.org/mirrors/phantomjs
electron_mirror=https://npm.taobao.org/mirrors/electron/
fsevents_binary_host_mirror=https://npm.taobao.org/mirrors/fsevents/

Answer 2

网络问题，你下不了一个依赖库，这种问题我也遇到过， 用淘宝镜像吧https://npm.taobao.org/

npm install -g cnpm --registry=https://registry.npm.taobao.org
cnpm install gulp-sass -g