Additionally, I found out recently that if you are trying to use the Girl Pack Tagging tool on mac, there is a simple way to accomplish this,
1. simply download both the tool and the patch and apply the patch as usual.
2. Go to the game, lib, and renpy files and select get info on each of them and unlock the lock on the bottom right of each of them, after that, go to the bottom and change the permissions to read and write for everyone and press the three dotted lines on the bottom to apply them to all enclosed folders on all three folders.
(this is so you don't have to change the permissions for each of them one by one)
3. Go and download a virtual machine such as parallels, crossovers, or etc to run it.
4. Lastly make sure to add the pack you are trying to tag to the images folder.
That's basically it, let me know if you have any issues, no diddy.