The brain dead fix would be to paste the definition of try_mount into lupin-helpers I guess. The more elegant thing would be to fix the issue that was the reason I removed try_mount: you can end up unmounting previously mounted filesystems.
It has to be said, the description of the lupin-casper package does not make it sound like something that is still useful (wubi having not been a thing for something like 9 years now). What are you doing with it?
The brain dead fix would be to paste the definition of try_mount into lupin-helpers I guess. The more elegant thing would be to fix the issue that was the reason I removed try_mount: you can end up unmounting previously mounted filesystems.
It has to be said, the description of the lupin-casper package does not make it sound like something that is still useful (wubi having not been a thing for something like 9 years now). What are you doing with it?