Translate the following English sentence to French:
"There were no provisions, even though all this was anticipated long ago. We have been aware, ever since the nuclear installations were built, that one day they would have to be decommissioned and that this would not be a simple matter."
Rien n'a été prévu alors que, pourtant, tout était prévisible et de longue date : dès la construction des installations nucléaires chacun savait qu'il faudrait bien, un jour, les démanteler et que cela ne serait pas simple.