developer.casgrain.com

You can debug your QuickLook plugin easily with the help of qlmanage. But sometimes, you don’t want to dump your plugin in /Library/QuickLook/ every time you build because you run as a regular (non-admin) user.

QuickLook has a search path feature. You can set the search order, and in my case I use my two build folders (Debug and Release) before the main /Library/QuickLook/ folder. It is a global, per-user property (hence the -g), and as far as I know, the array can contain as many values as you want

defaults write -g QLGeneratorSearchPath -array "/Volumes/DevSource/xcodebuild/Debug" \
                                               "/Volumes/DevSource/xcodebuild/Release/" \
                                               "/Library/QuickLook/"

It’s probably a good idea to leave /Library/QuickLook/ in there as the last element of the array.

If you want to delete the search path, simply type:

defaults delete -g QLGeneratorSearchPath

This does not seem to be documented, but it works for me; as usual, YMMV…