"npm install -g macos-alias" also fails

Hi
I have an issue which is probably related to the space in my hard-drive (https://github.com/nodejs/node-gyp/issues/65).
The fix normally is to install globally:
npm install -g macos-alias

But this fails also..
The npm-debug.log shows that it nan@2.2.0 is installed but when it needs to install macos-alias
291 info lifecycle macos-alias@0.2.9~install: Failed to exec install script
and starts to rollback (rollbackFailedOptional)
But besides that not helpful.

But when I look at the output from my terminal:

→ npm install -g macos-alias

> macos-alias@0.2.9 install /usr/local/lib/node_modules/macos-alias
> node-gyp rebuild

make: *** No rule to make target `../../../../../../Volumes/Data', needed by `Makefile'.  Stop.

the last line seems odd, because I was trying to stop the install from looking for my "Data HD"

Start by reproducing npm install -g macos-alias on the reported macOS setup and inspect the referenced npm-debug.log alongside the terminal output. Trace why node-gyp or make requests the /Volumes/Data path; done means the global installation no longer fails with the reported Makefile error.