xCode: gulp: command not found

If you're using gulp or similar build tools to build your project you might run into this issue.

/Users/username/Library/Developer/Xcode/DerivedData/project/filename.sh: line 4: gulp: command not found

Here, xCode can not find gulp because it uses the system version of node.js. Hence, gulp has to be installed inside system node.js.

Solution:

install node.js
install node version manager nvm
$ nvm ls , you should see system in the list
$ nvm use system
$ npm install -g gulp
Now, gulp is available globally inside the system version. You should be good to go now.