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nodePackages: Added instructions to README about packages with binary addons

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Roger Qiu 2017-12-21 23:45:21 +11:00
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pkgs/development/node-packages/README.md
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@ -17,6 +17,23 @@ is that a new package should be added to the collection for the latest stable LT
release (which is currently 6.x), unless there is an explicit reason to support
a different release.
If your package uses native addons, you need to examine what kind of native
build system it uses. Here are some examples:
* `node-gyp`
* `node-gyp-builder`
* `node-pre-gyp`
After you have identified the correct system, you need to override your package
expression while adding in build system as a build input. For example, `dat`
requires `node-gyp-build`, so we override its expression in `default-v6.nix`:
```nix
dat = nodePackages.dat.override (oldAttrs: {
buildInputs = oldAttrs.buildInputs ++ [ nodePackages.node-gyp-build ];
});
```
To add a package from NPM to nixpkgs:
1. Modify `pkgs/development/node-packages/node-packages-v6.json` to add, update