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48 lines
2.7 KiB
Markdown
48 lines
2.7 KiB
Markdown
# Force npm to use global installed node-gyp
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**Note: These instructions only work with npm 6 or older. For a solution that works with npm 8 (or older), see [Updating-npm-bundled-node-gyp.md](Updating-npm-bundled-node-gyp.md).**
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[Many issues](https://github.com/nodejs/node-gyp/labels/ERR%21%20node-gyp%20-v%20%3C%3D%20v5.1.0) are opened by users who are
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not running a [current version of node-gyp](https://github.com/nodejs/node-gyp/releases).
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npm bundles its own, internal, copy of node-gyp located at `npm/node_modules`, within npm's private dependencies which are separate from *globally* accessible packages. Therefore this internal copy of node-gyp is independent from any globally installed copy of node-gyp that
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may have been installed via `npm install -g node-gyp`.
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So npm's internal copy of node-gyp **isn't** stored inside *global* `node_modules` and thus isn't available for use as a standalone package. npm uses it's *internal* copy of `node-gyp` to automatically build native addons.
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When you install a _new_ version of node-gyp outside of npm, it'll go into your *global* `node_modules`, but not under the `npm/node_modules` (where internal copy of node-gyp is stored). So it will get into your `$PATH` and you will be able to use this globally installed version (**but not internal node-gyp of npm**) as any other globally installed package.
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The catch is that npm **won't** use global version unless you tell it to, it'll keep on using the **internal one**. You need to instruct it to by setting the `node_gyp` config variable (which goes into your `~/.npmrc`). You do this by running the `npm config set` command as below. Then npm will use the command in the path you supply whenever it needs to build a native addon.
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**Important**: You also need to remember to unset this when you upgrade npm with a newer version of node-gyp, or you have to manually keep your globally installed node-gyp to date. See "Undo" below.
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## Linux and macOS
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```
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npm install --global node-gyp@latest
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npm config set node_gyp $(npm prefix -g)/lib/node_modules/node-gyp/bin/node-gyp.js
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```
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`sudo` may be required for the first command if you get a permission error.
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## Windows
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### Windows Command Prompt
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```
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npm install --global node-gyp@latest
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for /f "delims=" %P in ('npm prefix -g') do npm config set node_gyp "%P\node_modules\node-gyp\bin\node-gyp.js"
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```
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### Powershell
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```
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npm install --global node-gyp@latest
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npm prefix -g | % {npm config set node_gyp "$_\node_modules\node-gyp\bin\node-gyp.js"}
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```
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## Undo
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**Beware** if you don't unset the `node_gyp` config option, npm will continue to use the globally installed version of node-gyp rather than the one it ships with, which may end up being newer.
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```
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npm config delete node_gyp
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npm uninstall --global node-gyp
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```
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