bundle node-gyp and include it (shimmed) in the PATH

lib/make-spawn-args.js

@@ -1,6 +1,7 @@
 const isWindows = require('./is-windows.js')
 const setPATH = require('./set-path.js')
 const {resolve} = require('path')
+const npm_config_node_gyp = require.resolve('node-gyp/bin/node-gyp.js')
 
 const makeSpawnArgs = options => {
   const {
@@ -23,6 +24,7 @@ const makeSpawnArgs = options => {
       npm_package_json: resolve(path, 'package.json'),
       npm_lifecycle_event: event,
       npm_lifecycle_script: cmd,
+      npm_config_node_gyp,
     }),
     stdio,
     cwd: path,

lib/node-gyp-bin/node-gyp

@@ -0,0 +1,2 @@
+#!/usr/bin/env sh
+node "$npm_config_node_gyp" "$@"

lib/node-gyp-bin/node-gyp.cmd

@@ -0,0 +1 @@
+@node "%npm_config_node_gyp%" %*

lib/set-path.js

@@ -1,5 +1,6 @@
 const {resolve, dirname} = require('path')
 const isWindows = require('./is-windows.js')
+const nodeGypPath = resolve(__dirname, 'node-gyp-bin')
 
 // Windows typically calls its PATH environ 'Path', but this is not
 // guaranteed, nor is it guaranteed to be the only one.  Merge them
@@ -12,7 +13,7 @@ const setPATH = (projectPath, env) => {
     .reduce((set, p) => set.concat(p.filter(p => !set.includes(p))), [])
     .join(delimiter)
 
-  const pathArr = []
+  const pathArr = [nodeGypPath]
   // unshift the ./node_modules/.bin from every folder
   // walk up until dirname() does nothing, at the root
   // XXX should we specify a cwd that we don't go above?