# Release 16.09 (“Flounder”, 2016/09/??)

In addition to numerous new and upgraded packages, this release has the following highlights:

- PXE "netboot" media has landed in . See for documentation.

- Xorg-server-1.18.*. If you choose `"ati_unfree"` driver, 1.17.* is still used due to ABI incompatibility.

The following new services were added since the last release:

- `(this will get automatically generated at release time)`

When upgrading from a previous release, please be aware of the following incompatible changes:

- A large number of packages have been converted to use the multiple outputs feature of Nix to greatly reduce the amount of required disk space. This may require changes to any custom packages to make them build again; see the relevant chapter in the Nixpkgs manual for more information. (Additional caveat to packagers: some packaging conventions related to multiple-output packages were changed late (August 2016) in the release cycle and differ from the initial introduction of multiple outputs.)

- Shell aliases for systemd sub-commands were dropped: `start`, `stop`, `restart`, `status`.

- Redis now binds to 127.0.0.1 only instead of listening to all network interfaces. This is the default behavior of Redis 3.2

- /var/setuid-wrappers/ is now a symlink so it can be atomically updated and it's not mounted as tmpfs anymore since setuid binaries are located on /run/ as tmpfs.

- Gitlab's maintainence script gitlab-runner was removed and split up into the more clearer gitlab-run and gitlab-rake scripts because gitlab-runner is a component of Gitlab CI.

- `services.xserver.libinput.accelProfile` default changed from `flat` to `adaptive`, as per official documentation.

- `fonts.fontconfig.ultimate.rendering` was removed because our presets were obsolete for some time. New presets are hardcoded into freetype; one selects a preset via `fonts.fontconfig.ultimate.preset`. You can customize those presets via ordinary environment variables, using `environment.variables`.

- The `audit` service is no longer enabled by default. Use `security.audit.enable = true;` to explicitly enable it.

Other notable improvements:

- Revamped grsecurity/PaX support. There is now only a single general-purpose distribution kernel and the configuration interface has been streamlined. Desktop users should be able to simply set

      security.grsecurity.enable = true

  to get a reasonably secure system without having to sacrifice too much functionality. See for documentation