npm install時出現gyp verb `which` failed Error: not found: python2相關錯誤
阿新 • • 發佈：2022-03-02
從網上下載一個專案，npm install時出現如下錯誤：
npm ERR! code 1 npm ERR! path D:\2022_2_11_clear\sadjkl\node_modules\node-sass npm ERR! command failed npm ERR! command C:\WINDOWS\system32\cmd.exe /d /s /c node scripts/build.js npm ERR! Building: D:\Program Files\nodejs\node.exe D:\2022_2_11_clear\sadjkl\node_modules\node-gyp\bin\node-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --libsass_ldflags= --libsass_library= npm ERR文字版錯誤日誌! gyp info it worked if it ends with ok npm ERR! gyp verb cli [ npm ERR! gyp verb cli 'D:\\Program Files\\nodejs\\node.exe', npm ERR! gyp verb cli 'D:\\2022_2_11_clear\\sadjkl\\node_modules\\node-gyp\\bin\\node-gyp.js', npm ERR! gyp verb cli 'rebuild', npm ERR! gyp verb cli '--verbose', npm ERR! gyp verb cli '--libsass_ext=', npm ERR! gyp verb cli '--libsass_cflags=', npm ERR! gyp verb cli '--libsass_ldflags=', npm ERR! gyp verb cli '--libsass_library=' npm ERR! gyp verb cli ] npm ERR! gyp info using node-gyp@3.8.0 npm ERR! gyp info using node@16.13.0 | win32 | x64 npm ERR! gyp verb command rebuild [] npm ERR! gyp verb command clean [] npm ERR! gyp verb clean removing "build" directory npm ERR! gyp verb command configure [] npm ERR! gyp verb check python checking for Python executable "python2" in the PATH npm ERR! gyp verb `which` failed Error: not found: python2 npm ERR! gyp verb `which` failed at getNotFoundError (D:\2022_2_11_clear\sadjkl\node_modules\which\which.js:13:12) npm ERR! gyp verb `which` failed at F (D:\2022_2_11_clear\sadjkl\node_modules\which\which.js:68:19) npm ERR! gyp verb `which` failed at E (D:\2022_2_11_clear\sadjkl\node_modules\which\which.js:80:29) npm ERR! gyp verb `which` failed at D:\2022_2_11_clear\sadjkl\node_modules\which\which.js:89:16 npm ERR! gyp verb `which` failed at D:\2022_2_11_clear\sadjkl\node_modules\isexe\index.js:42:5 npm ERR! gyp verb `which` failed at D:\2022_2_11_clear\sadjkl\node_modules\isexe\windows.js:36:5 npm ERR! gyp verb `which` failed at FSReqCallback.oncomplete (node:fs:198:21) npm ERR! gyp verb `which` failed python2 Error: not found: python2 npm ERR! gyp verb `which` failed at getNotFoundError (D:\2022_2_11_clear\sadjkl\node_modules\which\which.js:13:12) npm ERR! gyp verb `which` failed at F (D:\2022_2_11_clear\sadjkl\node_modules\which\which.js:68:19) npm ERR! gyp verb `which` failed at E (D:\2022_2_11_clear\sadjkl\node_modules\which\which.js:80:29) npm ERR! gyp verb `which` failed at D:\2022_2_11_clear\sadjkl\node_modules\which\which.js:89:16 npm ERR! gyp verb `which` failed at D:\2022_2_11_clear\sadjkl\node_modules\isexe\index.js:42:5 npm ERR! gyp verb `which` failed at D:\2022_2_11_clear\sadjkl\node_modules\isexe\windows.js:36:5 npm ERR! gyp verb `which` failed at FSReqCallback.oncomplete (node:fs:198:21) { npm ERR! gyp verb `which` failed code: 'ENOENT' npm ERR! gyp verb `which` failed } npm ERR! gyp verb check python checking for Python executable "python" in the PATH npm ERR! gyp verb `which` succeeded python D:\anaconda3\python.EXE npm ERR! gyp ERR! configure error npm ERR! gyp ERR! stack Error: Command failed: D:\anaconda3\python.EXE -c import sys; print "%s.%s.%s" % sys.version_info[:3]; npm ERR! gyp ERR! stack File "<string>", line 1 npm ERR! gyp ERR! stack import sys; print "%s.%s.%s" % sys.version_info[:3]; npm ERR! gyp ERR! stack ^ npm ERR! gyp ERR! stack SyntaxError: invalid syntax npm ERR! gyp ERR! stack npm ERR! gyp ERR! stack at ChildProcess.exithandler (node:child_process:397:12) npm ERR! gyp ERR! stack at ChildProcess.emit (node:events:390:28) npm ERR! gyp ERR! stack at maybeClose (node:internal/child_process:1064:16) npm ERR! gyp ERR! stack at Process.ChildProcess._handle.onexit (node:internal/child_process:301:5) npm ERR! gyp ERR! System Windows_NT 10.0.14393 npm ERR! gyp ERR! command "D:\\Program Files\\nodejs\\node.exe" "D:\\2022_2_11_clear\\sadjkl\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library=" npm ERR! gyp ERR! cwd D:\2022_2_11_clear\sadjkl\node_modules\node-sass npm ERR! gyp ERR! node -v v16.13.0 npm ERR! gyp ERR! node-gyp -v v3.8.0 npm ERR! gyp ERR! not ok npm ERR! Build failed with error code: 1 npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\mdzz\AppData\Local\npm-cache\_logs\2022-03-01T13_51_54_809Z-debug.log
經過查詢資料，推測是NodeJS和node-sass版本不匹配的問題：
| NodeJS | Supported node-sass version | Node Module | |---------|-----------------------------|-------------| | Node 16 | 6.0+ | 93 | | Node 15 | 5.0+ | 88 | | Node 14 | 4.14+ | 83 | | Node 13 | 4.13+, <5.0 | 79 | | Node 12 | 4.12+ | 72 | | Node 11 | 4.10+, <5.0 | 67 | | Node 10 | 4.9+, <6.0 | 64 | | Node 8 | 4.5.3+, <5.0 | 57 | | Node <8 | <5.0 | <57 |
執行node --version指令，本機node版本為v16.13.0
檢視專案的package.json，devDependencies中node-sass版本是4.12.0
根據上面的表格，確實存在不匹配。
嘗試辦法①——修改node-sass的版本
根據上表，
npm i node-sass@6.0.1
執行該指令之後，devDependencies中的node-sass版本也被修改為相應版本，繼續執行：
npm install
這次沒有再報錯，繼續執行：
npm run serve
結果報錯：SyntaxError:Error:NodeSassversion6.0.1isincompatiblewith^4.0.0.
詳情如下：
D:\2022_2_11_clear\sadjkl>npm run serve > unclear@0.1.0 serve > vue-cli-service serve INFO Starting development server... 98% after emitting CopyPlugin Failed to compile with 1 error 下午10:56:39 error in ./src/App.vue?vue&type=style&index=0&lang=scss& Syntax Error: Error: Node Sass version 6.0.1 is incompatible with ^4.0.0. @ ./node_modules/vue-style-loader??ref--9-oneOf-1-0!./node_modules/css-loader/dist/cjs.js??ref--9-oneOf-1-1!./node_modules/vue-loader/lib/loaders/stylePostLoader.js!./node_modules/postcss-loader/src??ref--9-oneOf-1-2!./node_modules/sass-loader/dist/cjs.js??ref--9-oneOf-1-3!./node_modules/cache-loader/dist/cjs.js??ref--1-0!./node_modules/vue-loader/lib??vue-loader-options!./src/App.vue?vue&type=style&index=0&lang=scss& 4:14-416 15:3-20:5 16:22-424 @ ./src/App.vue?vue&type=style&index=0&lang=scss& @ ./src/App.vue @ ./src/main.js @ multi (webpack)-dev-server/client?http://172.27.2.205:8080&sockPath=/sockjs-node (webpack)/hot/dev-server.js ./src/main.js
辦法②——npm install --global windows-build-tools
但是根據stackoverflow網友描述：
npm install --global windows-build-tools installs Python 2.7, and installs it globally
也就是該辦法本質上仍然是通過配置python2環境解決問題。執行指令後會全域性安裝python2.7，對於這種全域性安裝沒有詳細描述，這可能會產生一些後果，影響我本來搭建好的python3環境。因此考慮採用其它辦法配置python2環境。
嘗試③——用conda配置python2環境
本地原始環境狀況：已安裝anaconda，預設python版本為3.9（詳見win10按預設步驟安裝Anaconda後各指令狀況&Anaconda配置環境變數）
如何用conda配置python2環境：https://docs.conda.io/projects/conda/en/latest/user-guide/getting-started.html#managing-environments
執行：
conda create --name py2env python=2.7
報錯：
Collecting package metadata (current_repodata.json): failed CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://repo.anaconda.com/pkgs/main/win-64/current_repodata.json> Elapsed: - An HTTP error occurred when trying to retrieve this URL. HTTP errors are often intermittent, and a simple retry will get you on your way. If your current network has https://www.anaconda.com blocked, please file a support request with your network engineering team. 'https://repo.anaconda.com/pkgs/main/win-64'
切換手機熱點後有改善，但還是不行：
於是只能找映象了，先用了清華映象，卡死在開始，後面採用下面這個映象（截至2022-03-02證明有效），才成功。
採用檔案配置映象的辦法，編輯使用者資料夾下的.condarc檔案，把下面的東西替換進去，儲存：
channels: - defaults show_channel_urls: true default_channels: - http://mirrors.aliyun.com/anaconda/pkgs/main - http://mirrors.aliyun.com/anaconda/pkgs/r - http://mirrors.aliyun.com/anaconda/pkgs/msys2 custom_channels: conda-forge: http://mirrors.aliyun.com/anaconda/cloud msys2: http://mirrors.aliyun.com/anaconda/cloud bioconda: http://mirrors.aliyun.com/anaconda/cloud menpo: http://mirrors.aliyun.com/anaconda/cloud pytorch: http://mirrors.aliyun.com/anaconda/cloud simpleitk: http://mirrors.aliyun.com/anaconda/cloud
執行：
conda clean -i
重新執行最開始的“建立環境”指令。
測試環境：
C:\Users\mdzz>conda activate py2env (py2env) C:\Users\mdzz>python --version Python 2.7.18 :: Anaconda, Inc. (py2env) C:\Users\mdzz>where python D:\anaconda3\envs\py2env\python.exe D:\anaconda3\python.exe (py2env) C:\Users\mdzz>pip --version pip 19.3.1 from D:\anaconda3\envs\py2env\lib\site-packages\pip (python 2.7) (py2env) C:\Users\mdzz>pip list DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7. More details about Python 2 support in pip, can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support Package Version ------------ ------------------- certifi 2020.6.20 pip 19.3.1 setuptools 44.0.0.post20200106 wheel 0.37.1 wincertstore 0.2 (py2env) C:\Users\mdzz>conda deactivate
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