[Lix](https://lix.systems) is a fork of CppNix, the original Nix implementation. It behaves like `nixVersions.*` in terms of packaging with a big difference: it uses Meson for its build system.
Therefore, it is not possible to share the packaging trees.
The rest is pretty mundane:
- Lix will passthru all the time to the `nixosTests.misc` to smoke test any critical regressions as a last line after all our regression battery on the Lix project side.
- Cross compilation has been extensively tested.
- Static compilation is known to fail on a test.
Internal API documentation is out of scope for this commit.
Signed-off-by: Raito Bezarius <masterancpp@gmail.com>
