【发布时间】:2020-04-28 07:25:09
【问题描述】:
我的设置:
- Windows 10
- 适用于 Windows 的 NVM 1.1.7
- 节点 12.14.1 和 npm 6.13.4
- Angular 8.2.14 和 @angular/cli 8.3.22
只是尝试运行默认的角度模板:
> npm install -g @angular/cli # this installed the angular version mentioned above
> ng new test # Chose default options for the project
> cd test
> npm ci # lots of error messages
最后一个命令导致输出中出现很多错误(但不会使命令失败):
> fsevents@1.2.11 install C:\test\node_modules\@angular\compiler-cli\node_modules\fsevents
> node-gyp rebuild
C:\test\node_modules\@angular\compiler-cli\node_modules\fsevents>if not defined npm_config_node_gyp (node "C:\Users\foo\AppData\Roaming\nvm\v12.14.1\node_modules\npm\node_modules\npm-lifecycle\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuild ) else (node "C:\Users\foo\AppData\Roaming\nvm\v12.14.1\node_modules\npm\node_modules\node-gyp\bin\node-gyp.js" rebuild )
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 "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 "python3" can be used
gyp ERR! find Python - "python3" is not in PATH or produced an error
gyp ERR! find Python checking if the py launcher can be used to find Python 2
gyp ERR! find Python - "py.exe" is not in PATH or produced an error
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 Python is C:\Python37\python.exe
gyp ERR! find Python - "C:\Python37\python.exe" could not be run
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 (C:\Users\foo\AppData\Roaming\nvm\v12.14.1\node_modules\npm\node_modules\node-gyp\lib\find-python.js:307:47)
gyp ERR! stack at PythonFinder.runChecks (C:\Users\foo\AppData\Roaming\nvm\v12.14.1\node_modules\npm\node_modules\node-gyp\lib\find-python.js:136:21)
gyp ERR! stack at PythonFinder.<anonymous> (C:\Users\foo\AppData\Roaming\nvm\v12.14.1\node_modules\npm\node_modules\node-gyp\lib\find-python.js:225:16)
gyp ERR! stack at PythonFinder.execFileCallback (C:\Users\foo\AppData\Roaming\nvm\v12.14.1\node_modules\npm\node_modules\node-gyp\lib\find-python.js:271:16)
gyp ERR! stack at exithandler (child_process.js:302:5)
gyp ERR! stack at ChildProcess.errorhandler (child_process.js:314:5)
gyp ERR! stack at ChildProcess.emit (events.js:223:5)
gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:270:12)
gyp ERR! stack at onErrorNT (internal/child_process.js:456:16)
gyp ERR! stack at processTicksAndRejections (internal/process/task_queues.js:81:21)
gyp ERR! System Windows_NT 10.0.18362
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\foo\\AppData\\Roaming\\nvm\\v12.14.1\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\Users\foo\repos\POC\angular\test1\node_modules\@angular\compiler-cli\node_modules\fsevents
gyp ERR! node -v v12.14.1
gyp ERR! node-gyp -v v5.0.5
gyp ERR!
所有错误都与fsevents、node-gyp 和找不到python 可执行文件有关。没错,我没有安装python,但它不是angular的先决条件。
该命令实际上以 0 代码退出(表示成功 - 此外,ng build --prod 在那之后有效!)但输出中肯定有很多错误。
手动删除node_modules 文件夹并运行npm install 而不是npm ci 会产生更短且没有任何错误的输出。另外,它没有修改package-lock.json文件,表示安装了相同版本的依赖。
发生了什么事?为什么使用npm ci时出现这么多错误,而使用npm install时却没有?
【问题讨论】: