This reverts commit c2e2b42877efa8b485982120cb5cd1728c2e885a, which breaks building with nixUnstable.
CYVWW32QHVPOSZWEIJ53235TMH64EVXNAX2JHVBRIR6M3HGXW2YAC
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settings.restrictEval = true;
evalSettings.restrictEval = true;