The examples/hello system can be used by users that want to boot a
minimal, and cross-compilable system.
This is better than a "raw" build of the root of the Mobile NixOS repo
since it provides a stage-2 application stating the system booted
successfully.
This didn't end up being something that's being worked on. It probably
was entirely confusing for everyone as it wasn't documented, and didn't
actually do anything useful most of the time.
Rather than polluting the build with some one-off special cases like
this, we'll implement an "installer" as an example system, if we even
want an installer.
It's not planned yet *how* users should install, it may not even be an
installer type system.
This also rewords the "successful default build failure" message.
This broke eval for aarch64-linux platforms.
See the previous commit for an assertion that should prevent such
breakage from going through in the future.
We are now splitting the concerns more clearly, by making `baseModules`
the reason we are evaluating NixOS, rather than wholesale always
including it into the modules.
Those are sent as a parameter to the derivation. This is part of the
internal API allowing the coming release.nix to make generic builds for
the overlay.
