It's broke again !!!!!

What a shitty week, pardon my French, first Joseph with his trampoline accident and now le shed is broken big time !!!!
It developed a gearbox oil leak straight after we changed the clutch on it, which led us to believe we may have disturbed an oil seal when we did the initial clutch change, so we ran it till my four days off and agreed the gearbox will have to be taken off to investigate, anticipating the input shaft oil seal to be knackered with the oil coming out of the clutch housing rather than the gearbox ?
So gearbox is off and we discover that the diff has had a disagreement with the clutch housing casing in the worst possible manner ? The cracks can be seen in the bottom left image at the cleaned up bit of the casing.
Can't be welded up with the casing being alloy so its looking like a new gearbox, well a used gearbox from a vehicle dismantler company ???
Odds on le shed surviving till the end of the year ??? Looking slim the way it's carrying on lol.