Haven ended thus is just (4-6)

I believe the answer is:

even-handed

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'just' is the definition.
(I've seen this before)

'haven ended thus' is the wordplay.
'haven ended' can be anagrammed to 'EVEN-HANDED'.
Though, I am not sure how the anagram is indicated.

'is' is the link.

Can you help me to learn more?

(Another definition for even-handed that I've seen is " Fair, impartial".)

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

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