记录一次填npm安装依赖坑的经历

闲来无事，想改改hexo博客的标签云样式，找到了一篇博客，跟着节奏走着走着，不小心踩了好多坑，好歹我坚强，几次google 后，我爬起来了。。。

错误一：

gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.

提示缺少python，wtf，明明安装了python 并配置了环境变量，居然提示找不到，

答案在这里

If you haven’t got python installed along with all the node-gyp dependecies, simply execute:

npm install --global --production windows-build-tools

and then to install the package:

npm install --global node-gyp

once installed, you will have all the node-gyp dependencies downloaded, but you still need the environment variable. Validate Python is indeed found in the correct folder:

C:\Users\ben\.windows-build-tools\python27\python.exe

Note - it uses python 2.7 not 3.x as it is not supported

If it doesn’t moan, go ahead and create your (user) environment variable:

setx PYTHON "%USERPROFILE%\.windows-build-tools\python27\python.exe"

restart cmd, and verify the variable exists via set PYTHON which should return the variable

Lastly re-apply npm install <module>

错误二（可选）：

我在安装canvas 的时候， 提示缺少GTK

详细答案在这里

下面选择Chocolatey 安装依赖

需要先以管理员身份打开cmd，输入

@"%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -InputFormat None -ExecutionPolicy Bypass -Command "iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))" && SET "PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin"

其他的安装Chocolatey的方式，看这里

All the dependencies can be installed with Chocolatey, the package manager for Windows.

1. choco install -y python2 gtk-runtime microsoft-build-tools libjpeg-turbo (may require sudo/Administrator and reboot).
2. You will need the cairo library which is bundled in GTK. Download the GTK 2 bundle for Win32or Win64. Unzip the contents in C:\GTK.
3. Run npm install canvas or yarn add node-canvas with command line from your project folder.

收工。