Gulp Removable Drive "dest" on windows error

Question

The task is simple... write some CircuitPuthon code but have it under git control. The way CircuitPython works, the IoT device shows up as a drive in windows... you update the .py files, the device reboots and reloads.

However, I don't want (obviously) to have all my development happen not hat removable USB drive. So I made a folder on disk, and want to use a watch() task. Every time I change a file, it will copy the changes to the USB drive triggering a device boot. This way I can keep it all nice and newt while still having the convenience.

The problem is that when the destination is a drive root on a removable drive (like 'e:/') the task fails...

Error: EPERM: operation not permitted, mkdir 'e:\'

I would prefer to avoid elevating the command line. I just need a way to tell the dest() function to leave the folder alone if it exists. I am open to any ideas!

var gulp = require('gulp');

var paths = {
    code: {
      src: 'source/**/*',
      dest: 'e:/'
    }
}

function code() {
    return gulp.src(paths.code.src, {since: gulp.lastRun(code)})
    .pipe(gulp.dest(paths.code.dest));
}

function watch() {
    gulp.watch(paths.code.src, code);
}

exports.watch = watch;