The French leave set of blocks (4)

I believe the answer is:

lego

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'set of blocks' is the definition.
'lego' can be an answer for 'blocks' (I've seen this before). I'm not sure about the 'set of' bit.

'the french leave' is the wordplay.
'the french' becomes 'le' ('the' in French).
'leave' becomes 'go' (to go is to depart or leave).
'le'+'go'='LEGO'

Can you help me to learn more?

(Other definitions for lego that I've seen before include "Toy building-bricks" , "Toy with interlocking blocks" , "Toy building bricks" , "Children's building bricks" , "Toy construction set" .)

I've seen this clue in the Sydney Morning Herald.

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