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1{ ... }: 2{ 3 nixpkgs.config.permittedInsecurePackages = [ "electron-38.8.4" ]; 4 5 nixpkgs.overlays = [ 6 (final: prev: { 7 electron = final.electron-bin; 8 electron_39 = final.electron_39-bin; 9 }) 10 ]; 11}