{ nix.settings = { trusted-public-keys = [ "nerflap2-1:pDZCg0oo9PxNQxwVSQSvycw7WXTl53PGvVeZWvxuqJc=" "gonne.mathebau.de-1:FsXFyFiBFE/JxC9MCkt/WuiXjx5dkRI9RXj0FxOQrV0=" ]; experimental-features = [ "flakes" ]; auto-optimise-store = true; fallback = true; builders-use-substitus = true; }; gc = { persistent = true; dates = "weekly"; options = "-d"; randomizedDelaySec = "5h"; }; optimise = { dates = []; automatic = true; }; }