Index: node_modules/prebuild-install/rc.js
===================================================================
--- node_modules/prebuild-install/rc.js	(revision 81bc7da776d8cda42939ef4ab350c88d13b4941f)
+++ node_modules/prebuild-install/rc.js	(revision 81bc7da776d8cda42939ef4ab350c88d13b4941f)
@@ -0,0 +1,64 @@
+const path = require('path')
+const minimist = require('minimist')
+const getAbi = require('node-abi').getAbi
+const detectLibc = require('detect-libc')
+const napi = require('napi-build-utils')
+
+const env = process.env
+
+const libc = env.LIBC || process.env.npm_config_libc ||
+  (detectLibc.isNonGlibcLinuxSync() && detectLibc.familySync()) || ''
+
+// Get the configuration
+module.exports = function (pkg) {
+  const pkgConf = pkg.config || {}
+  const buildFromSource = env.npm_config_build_from_source
+
+  const rc = require('rc')('prebuild-install', {
+    target: pkgConf.target || env.npm_config_target || process.versions.node,
+    runtime: pkgConf.runtime || env.npm_config_runtime || 'node',
+    arch: pkgConf.arch || env.npm_config_arch || process.arch,
+    libc: libc,
+    platform: env.npm_config_platform || process.platform,
+    debug: env.npm_config_debug === 'true',
+    force: false,
+    verbose: env.npm_config_verbose === 'true',
+    buildFromSource: buildFromSource === pkg.name || buildFromSource === 'true',
+    path: '.',
+    proxy: env.npm_config_proxy || env.http_proxy || env.HTTP_PROXY,
+    'https-proxy': env.npm_config_https_proxy || env.https_proxy || env.HTTPS_PROXY,
+    'local-address': env.npm_config_local_address,
+    'local-prebuilds': 'prebuilds',
+    'tag-prefix': 'v',
+    download: env.npm_config_download
+  }, minimist(process.argv, {
+    alias: {
+      target: 't',
+      runtime: 'r',
+      help: 'h',
+      arch: 'a',
+      path: 'p',
+      version: 'v',
+      download: 'd',
+      buildFromSource: 'build-from-source',
+      token: 'T'
+    }
+  }))
+
+  rc.path = path.resolve(rc.path === true ? '.' : rc.path || '.')
+
+  if (napi.isNapiRuntime(rc.runtime) && rc.target === process.versions.node) {
+    rc.target = napi.getBestNapiBuildVersion()
+  }
+
+  rc.abi = napi.isNapiRuntime(rc.runtime) ? rc.target : getAbi(rc.target, rc.runtime)
+
+  rc.libc = rc.platform !== 'linux' || rc.libc === detectLibc.GLIBC ? '' : rc.libc
+
+  return rc
+}
+
+// Print the configuration values when executed standalone for testing purposses
+if (!module.parent) {
+  console.log(JSON.stringify(module.exports({}), null, 2))
+}