Dubbed Flounder NixOS 16.09 is powered by the long-term supported Linux 4.4 kernel series, uses the latest systemd 231 init system, GCC (GNU Compiler Collection) 5.4.0 compiler, and Glibc (GNU C Library) 2.24. Moreover, the graphics stack has been updated and it’s based on X.Org Server 1.18. However, users of AMD Radeon graphics cards are being informed that if they use the ati_unfree video driver, the X.Org Server 1.17 display server will be automatically used due to an ABI incompatibility, which affects all GNU/Linux distributions. Support for PXE netboot has been enabled as well in this release.