Macos – Disable Mountain Lion Dictionary Gesture

Better Touch Tool will distinguish between physical clicks on the trackpad and non-click taps. I have a desktop so I've only tested this with the Magic Trackpad, but it's likely to work the same with the Macbook's built in trackpad.

One caveat is that it only allows you to map commands to clicks at either the bottom-left or bottom-right edges of the trackpad - a click in the center of the pad wouldn't open launchpad. I haven't delved too deeply into Better Touch Tool, so it's possible that this is only the default behavior. Either way, I think this will do exactly what you need.

Homebrew tells you what to do:

You should probably change the ownership and permissions of /usr/local back to your user account.

For that we'll use chown and (recursively) set your user as the owner for /usr/local:

sudo chown -R $(whoami) /usr/local

This GitHub Gist does the same and a little more, which may or may not be required to get a fully working Homebrew again: Fix permissions on /usr/local for Homebrew