npm install报错：node-sass@5.0.0 postinstall: `node scripts/build.js`
npm install 不通过 异常信息如下：
> node-sass@5.0.0 postinstall D:\workspaces\VSCode\ruoyi-ui\node_modules\node-sass > node scripts/build.js Building: D:\Program Files\nodejs\node.exe D:\workspaces\VSCode\ruoyi-ui\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 [ gyp verb cli 'D:\\Program Files\\nodejs\\node.exe', gyp verb cli 'D:\\workspaces\\VSCode\\ruoyi-ui\\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 verb cli ] gyp info using node-gyp@7.1.2 gyp info using node@14.16.1 | win32 | x64 gyp verb command rebuild [] gyp verb command clean [] gyp verb clean removing "build" directory gyp verb command configure [] gyp verb find Python Python is not set from command line or npm configuration gyp verb find Python Python is not set from environment variable PYTHON gyp verb find Python checking if "python3" can be used gyp verb find Python - executing "python3" to get executable path gyp verb find Python - "python3" is not in PATH or produced an error gyp verb find Python checking if "python" can be used gyp verb find Python - executing "python" to get executable path gyp verb find Python - "python" is not in PATH or produced an error gyp verb find Python checking if "python2" can be used gyp verb find Python - executing "python2" to get executable path gyp verb find Python - "python2" is not in PATH or produced an error gyp verb find Python checking if Python is C:\Python37\python.exe gyp verb find Python - executing "C:\Python37\python.exe" to get version gyp verb find Python - "C:\Python37\python.exe" could not be run gyp verb find Python checking if Python is C:\Python27\python.exe gyp verb find Python - executing "C:\Python27\python.exe" to get version gyp verb find Python - "C:\Python27\python.exe" could not be run gyp verb find Python checking if the py launcher can be used to find Python gyp verb find Python - executing "py.exe" to get Python executable path gyp verb find Python - "py.exe" is not in PATH or produced an error gyp ERR! find Python gyp ERR! find Python Python is not set from command line or npm configuration gyp ERR! find Python Python is not set from environment variable PYTHON gyp ERR! find Python checking if "python3" can be used gyp ERR! find Python - "python3" is not in PATH or produced an error gyp ERR! find Python checking if "python" can be used gyp ERR! find Python - "python" is not in PATH or produced an error gyp ERR! find Python checking if "python2" can be used gyp ERR! find Python - "python2" is not in PATH or produced an error gyp ERR! find Python checking if Python is C:\Python37\python.exe gyp ERR! find Python - "C:\Python37\python.exe" could not be run gyp ERR! find Python checking if Python is C:\Python27\python.exe gyp ERR! find Python - "C:\Python27\python.exe" could not be run gyp ERR! find Python checking if the py launcher can be used to find Python gyp ERR! find Python - "py.exe" is not in PATH or produced an error gyp ERR! find Python gyp ERR! find Python ********************************************************** gyp ERR! find Python You need to install the latest version of Python. gyp ERR! find Python Node-gyp should be able to find and use Python. If not, gyp ERR! find Python you can try one of the following options: gyp ERR! find Python - Use the switch --python="C:\Path\To\python.exe" gyp ERR! find Python (accepted by both node-gyp and npm) gyp ERR! find Python - Set the environment variable PYTHON gyp ERR! find Python - Set the npm configuration variable python: gyp ERR! find Python npm config set python "C:\Path\To\python.exe" gyp ERR! find Python For more information consult the documentation at: gyp ERR! find Python https://github.com/nodejs/node-gyp#installation gyp ERR! find Python ********************************************************** gyp ERR! find Python gyp ERR! configure error gyp ERR! stack Error: Could not find any Python installation to use gyp ERR! stack at PythonFinder.fail (D:\workspaces\VSCode\ruoyi-ui\node_modules\node-gyp\lib\find-python.js:302:47) gyp ERR! stack at PythonFinder.runChecks (D:\workspaces\VSCode\ruoyi-ui\node_modules\node-gyp\lib\find-python.js:136:21) gyp ERR! stack at PythonFinder.<anonymous> (D:\workspaces\VSCode\ruoyi-ui\node_modules\node-gyp\lib\find-python.js:200:18) gyp ERR! stack at PythonFinder.execFileCallback (D:\workspaces\VSCode\ruoyi-ui\node_modules\node-gyp\lib\find-python.js:266:16) gyp ERR! stack at exithandler (child_process.js:315:5) gyp ERR! stack at ChildProcess.errorhandler (child_process.js:327:5) gyp ERR! stack at ChildProcess.emit (events.js:315:20) gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:275:12) gyp ERR! stack at onErrorNT (internal/child_process.js:465:16) gyp ERR! stack at processTicksAndRejections (internal/process/task_queues.js:80:21) gyp ERR! System Windows_NT 10.0.18362 gyp ERR! command "D:\\Program Files\\nodejs\\node.exe" "D:\\workspaces\\VSCode\\ruoyi-ui\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library=" gyp ERR! cwd D:\workspaces\VSCode\ruoyi-ui\node_modules\node-sass gyp ERR! node -v v14.16.1 gyp ERR! node-gyp -v v7.1.2 gyp ERR! not ok Build failed with error code: 1 npm WARN eslint-loader@2.2.1 requires a peer of eslint@>=1.6.0 <7.0.0 but none is installed. You must install peer dependencies yourself. npm WARN less-loader@8.1.0 requires a peer of webpack@^5.0.0 but none is installed. You must install peer dependencies yourself. npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@2.3.2 (node_modules\fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@2.3.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"}) npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.13 (node_modules\webpack-dev-server\node_modules\fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.13: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"}) npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.13 (node_modules\watchpack-chokidar2\node_modules\fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.13: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"}) npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! node-sass@5.0.0 postinstall: `node scripts/build.js` npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the node-sass@5.0.0 postinstall script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above. npm ERR! A complete log of this run can be found in:
很多人会以为是 python 找不到，而去安装python 然后各种 管理员权限打开执行：npm install --global --production windows-build-tools。
最后还是不行，仔细看会发现标红得错误信息，应该是 node-sass安装不成功 添加一个node-sass 的数据源，在install 就OK了
解决方法：
npm config set sass_binary_site=https://npm.taobao.org/mirrors/node-sass
再执行 npm install 就可以了
