Install Oasys in MacOS - oasys-kit/oasys-installation-scripts GitHub Wiki
1) Install the Oasys App in your system
Oasys1.3 (MacOS >= 11.0), running on python 3.8.10 (suggested)
Oasys1.2 (MacOS >= 10.14), running on python 3.7.3 (deprecated)
2) Fix the App attributes
After installing and running the application for the first time, a popup with the message: "Oasys1.3 is damaged and can't be opened. You should move it to the trash." could appear.
To fix the problem, a quick solution is to open a terminal (Applications-->Utilities-->Terminal):
and type the following command:
xattr -cr /Applications/Oasys1.3.app/
Then, you should be able to run the application normally.