NixOS 18.09: Further Backward Incompatibilities and Notable Changes

- cc-by-nc-sa-20: Creative Commons Attribution Non Commercial Share Alike 2.0 - cc-by-nc-sa-25: Creative Commons Attribution Non Commercial Share Alike 2.5 - cc-by-nc-sa-30: Creative Commons Attribution Non Commercial Share Alike 3.0 - cc-by-nc-sa-40: Creative Commons Attribution Non Commercial Share Alike 4.0 - cc-by-nd-30: Creative Commons Attribution-No Derivative Works v3.00 - msrla: Microsoft Research License Agreement - The deprecated `services.cassandra` module has seen a complete rewrite. (See above.) - `lib.strict` is removed. Use `builtins.seq` instead. - The `clementine` package points now to the free derivation. `clementineFree` is removed now and `clementineUnfree` points to the package which is bundled with the unfree `libspotify` package. - The `netcat` package is now taken directly from OpenBSD's `libressl`, instead of relying on Debian's fork. The new version should be very close to the old version, but there are some minor differences. Importantly, flags like -b, -q, -C, and -Z are no longer accepted by the nc command. - The `services.docker-registry.extraConfig` object doesn't contain environment variables anymore. Instead it needs to provide an object structure that can be mapped onto the YAML configuration defined in [the `docker/distribution` docs](https://github.com/docker/distribution/blob/v2.6.2/docs/configuration.md). - `gnucash` has changed from version 2.4 to 3.x. If you've been using `gnucash` (version 2.4) instead of `gnucash26` (version 2.6) you must open your Gnucash data file(s) with `gnucash26` and then save them to upgrade the file format. Then you may use your data file(s) with Gnucash 3.x. See the upgrade [documentation](https://wiki.gnucash.org/wiki/FAQ#Using_Different_Versions.2C_Up_And_Downgrade). Gnucash 2.4 is still available under the attribute `gnucash24`. - `services.munge` now runs as user (and group) `munge` instead of root. Make sure the key file is accessible to the daemon. - `dockerTools.buildImage` now uses `null` as default value for `tag`, which indicates that the nix output hash will be used as tag. - The ELK stack: `elasticsearch`, `logstash` and `kibana` has been upgraded from 2.\* to 6.3.\*. The 2.\* versions have been [unsupported since last year](https://www.elastic.co/support/eol) so they have been removed. You can still use the 5.\* versions under the names `elasticsearch5`, `logstash5` and `kibana5`. The elastic beats: `filebeat`, `heartbeat`, `metricbeat` and `packetbeat` have had the same treatment: they now target 6.3.\* as well. The 5.\* versions are available under the names: `filebeat5`, `heartbeat5`, `metricbeat5` and `packetbeat5` The ELK-6.3 stack now comes with [X-Pack by default](https://www.elastic.co/products/x-pack/open). Since X-Pack is licensed under the [Elastic License](https://github.com/elastic/elasticsearch/blob/master/licenses/ELASTIC-LICENSE.txt) the ELK packages now have an unfree license. To use them you need to specify `allowUnfree = true;` in your nixpkgs configuration. Fortunately there is also a free variant of the ELK stack without X-Pack. The packages are available under the names: `elasticsearch-oss`, `logstash-oss` and `kibana-oss`. - Options `boot.initrd.luks.devices.name.yubikey.ramfsMountPoint` `boot.initrd.luks.devices.name.yubikey.storage.mountPoint` were removed. `luksroot.nix` module never supported more than one YubiKey at a time anyway, hence those options never had any effect. You should be able to remove them from your config without any issues. - `stdenv.system` and `system` in nixpkgs now refer to the host platform instead of the build platform. For native builds this is not change, let alone a breaking one. For cross builds, it is a breaking change, and `stdenv.buildPlatform.system` can be used instead for the old behavior. They should be using that anyways for clarity. - Groups `kvm` and `render` are introduced now, as systemd requires them. ## Other Notable Changes {#sec-release-18.09-notable-changes}

This section continues to outline backward incompatibilities in NixOS 18.09, including changes to docker-registry configuration, the upgrade of gnucash to version 3.x requiring data file format upgrades, changes to the munge service to run as a user instead of root, the use of 'null' as the default tag value in dockerTools.buildImage, and the upgrade of the ELK stack to version 6.3.*, now including X-Pack by default under an unfree license. Free variants of the ELK stack are available. Additionally, certain options for YubiKey LUKS devices have been removed, stdenv.system now refers to the host platform, and new groups 'kvm' and 'render' are introduced.