prl-tools: assert linux kernel version < 4.15

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+2
pkgs/os-specific/linux/prl-tools/default.nix
··· 6 }: 7 8 assert (!libsOnly) -> kernel != null; 9 10 let xorgFullVer = (builtins.parseDrvName xorg.xorgserver.name).version; 11 xorgVer = lib.concatStringsSep "." (lib.take 2 (lib.splitString "." xorgFullVer));
··· 6 }: 7 8 assert (!libsOnly) -> kernel != null; 9 + # Disable for kernels 4.15 and above due to compatibility issues 10 + assert kernel != null -> stdenv.lib.versionOlder kernel.version "4.15"; 11 12 let xorgFullVer = (builtins.parseDrvName xorg.xorgserver.name).version; 13 xorgVer = lib.concatStringsSep "." (lib.take 2 (lib.splitString "." xorgFullVer));