It looks like `npm publish` when `ignore-scripts=true` is set in .npmrc
creates a package that doesn't invoke `node-gyp rebuild` when installed;
the `scripts` property in the generated package.json is empty where it
normally inserts an auto-generated `{"install":"node-gyp rebuild"}`
stanza.

Fixes: https://github.com/bnoordhuis/node-iconv/issues/167
Refs: https://github.com/npm/npm/issues/16243