Release 18.09 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}

Release 18.09 introduces backward incompatibilities and notable changes. Several licenses (e.g., CC, Microsoft) are now correctly marked as unfree. `services.cassandra` was rewritten; `lib.strict` removed (use `builtins.seq`). `clementine` defaults to free version; `clementineUnfree` now contains `libspotify`. `netcat` updated from OpenBSD `libressl`, removing certain flags. `docker-registry.extraConfig` now requires a YAML object structure. `gnucash` upgraded to 3.x from 2.4, requiring data file format upgrade. `services.munge` now runs as the `munge` user/group. `dockerTools.buildImage` tags images with Nix output hash by default. The ELK stack and Elastic Beats upgraded to 6.3.x (2.x removed, 5.x available). 6.3 includes unfree X-Pack; free `-oss` variants offered. Obsolete YubiKey LUKS boot options removed. `stdenv.system` and `system` now refer to host platform, impacting cross-builds. `kvm` and `render` groups now required by systemd.