1{ fetchpatch, mkDerivation }: 2 3mkDerivation { 4 version = "2.1.1"; 5 sha256 = "sha256-HUOVBzUaU0ixIfPPctwR2TPijxJjcFY3dJ8Z7Ot2bpE="; 6 maximumOTPVersion = "25"; 7}