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1st chunk of `nixos/doc/manual/release-notes/rl-1809.section.md`
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# Release 18.09 ("Jellyfish", 2018/10/05) {#sec-release-18.09}

## Highlights {#sec-release-18.09-highlights}

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

- End of support is planned for end of April 2019, handing over to 19.03.

- Platform support: x86_64-linux and x86_64-darwin as always. Support for aarch64-linux is as with the previous releases, not equivalent to the x86-64-linux release, but with efforts to reach parity.

- Nix has been updated to 2.1; see its [release notes](https://nixos.org/nix/manual/#ssec-relnotes-2.1).

- Core versions: linux: 4.14 LTS (unchanged), glibc: 2.26 → 2.27, gcc: 7 (unchanged), systemd: 237 → 239.

- Desktop version changes: gnome: 3.26 → 3.28, (KDE) plasma-desktop: 5.12 → 5.13.

Notable changes and additions for 18.09 include:

- Support for wrapping binaries using `firejail` has been added through `programs.firejail.wrappedBinaries`.

  For example

  ```nix
  {
    programs.firejail = {
      enable = true;
      wrappedBinaries = {
        firefox = "${lib.getBin pkgs.firefox}/bin/firefox";
        mpv = "${lib.getBin pkgs.mpv}/bin/mpv";
      };
    };
  }
  ```

  This will place `firefox` and `mpv` binaries in the global path wrapped by firejail.

- User channels are now in the default `NIX_PATH`, allowing users to use their personal `nix-channel` defined channels in `nix-build` and `nix-shell` commands, as well as in imports like `import <mychannel>`.

  For example

  ```ShellSession
  $ nix-channel --add https://nixos.org/channels/nixpkgs-unstable nixpkgsunstable
  $ nix-channel --update
  $ nix-build '<nixpkgsunstable>' -A gitFull
  $ nix run -f '<nixpkgsunstable>' gitFull
  $ nix-instantiate -E '(import <nixpkgsunstable> {}).gitFull'
  ```

## New Services {#sec-release-18.09-new-services}

A curated selection of new services that were added since the last release:

- The `services.cassandra` module has been reworked and was rewritten from scratch. The service has succeeding tests for the versions 2.1, 2.2, 3.0 and 3.11 of [Apache Cassandra](https://cassandra.apache.org/).

- There is a new `services.foundationdb` module for deploying [FoundationDB](https://www.foundationdb.org) clusters.

- When enabled the `iproute2` will copy the files expected by ip route (e.g., `rt_tables`) in `/etc/iproute2`. This allows to write aliases for routing tables for instance.

- `services.strongswan-swanctl` is a modern replacement for `services.strongswan`. You can use either one of them to setup IPsec VPNs but not both at the same time.

  `services.strongswan-swanctl` uses the [swanctl](https://wiki.strongswan.org/projects/strongswan/wiki/swanctl) command which uses the modern [vici](https://github.com/strongswan/strongswan/blob/master/src/libcharon/plugins/vici/README.md) _Versatile IKE Configuration Interface_. The deprecated `ipsec` command used in `services.strongswan` is using the legacy [stroke configuration interface](https://github.com/strongswan/strongswan/blob/master/README_LEGACY.md).

- The new `services.elasticsearch-curator` service periodically curates or manages, your Elasticsearch indices and snapshots.

Every new services:

- `./config/xdg/autostart.nix`

- `./config/xdg/icons.nix`

- `./config/xdg/menus.nix`

- `./config/xdg/mime.nix`

- `./hardware/brightnessctl.nix`

- `./hardware/onlykey.nix`

- `./hardware/video/uvcvideo/default.nix`

- `./misc/documentation.nix`

- `./programs/firejail.nix`

- `./programs/iftop.nix`

- `./programs/sedutil.nix`

- `./programs/singularity.nix`

- `./programs/xss-lock.nix`

- `./programs/zsh/zsh-autosuggestions.nix`

- `./services/admin/oxidized.nix`

- `./services/backup/duplicati.nix`

- `./services/backup/restic.nix`

- `./services/backup/restic-rest-server.nix`

- `./services/cluster/hadoop/default.nix`

- `./services/databases/aerospike.nix`

- `./services/databases/monetdb.nix`

- `./services/desktops/bamf.nix`

- `./services/desktops/flatpak.nix`

- `./services/desktops/zeitgeist.nix`
Title: NixOS 18.09 "Jellyfish" Release Highlights and New Services
Summary
This section summarizes the NixOS 18.09 release, codenamed "Jellyfish," which was released on October 5, 2018. Key updates include the end of support planned for April 2019, Nix updated to version 2.1, core version updates (glibc, systemd), desktop version changes (GNOME, KDE Plasma), and the addition of firejail support for wrapping binaries. It also highlights the inclusion of user channels in the default NIX_PATH. The section further details new services added since the last release, such as reworked Cassandra module, FoundationDB deployment module, iproute2 configuration, strongswan-swanctl as a replacement for strongswan, elasticsearch-curator for managing Elasticsearch indices and snapshots, along with a list of other new services.