Turnkey

They wanted a turnkey solution for the entire system, but we could only provide the enclosure.

Third World countries no longer want to purchase nuclear projects on a turn-key basis; they want to receive advanced technical training as well.

He cautioned that the house “is not turnkey,” and that because it is “so unusual,” it may take a while to sell. But, he added, “It’s a joy to be selling a property with its history.”

The hardware-software costs are packaged together. Turnkeys are either special purpose (e.g., only for one function such as libraries) or general purpose […]

He saw the same Turnkey unfetter a man / With but little expedition, / Which put him in mind of the long debate / On the Slave-trade abolition.

[…]they passed through an open door into a lobby, from which a heavy gate, opposite to that by which they had entered, and which was guarded by a stout turnkey with the key in his hand, led at once into the interior of the prison.

'Certainly not,' said the turnkey; and the first corroborated his statement.

We can sell you all the parts, or we can turnkey the entire unit.