This is about a reported failure of installation of the gretl package
on macOS Ventura.
I have a further suggestion. Try starting the Installer app. If it's
not obvious how to find it, I believe it can be located at
/System/Library/CoreServices/Installer.app/Contents/MacOS/Installer
If you can get this app to open, I believe it should have a "Window"
menu with an item titled "Installer Log". Hopefully that will give
some information that's relevant for troubleshooting.
Allin Cottrell