home.nix depends on nix-colors (colorScheme), lazyvim, and walker HM
modules; previously every host wired them by hand via `modules`, which
external consumers couldn't know to do. Inject them in mkSystem so any
host built through it gets them; re-importing from a host is a no-op.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
mkSystem resolved the user's home config only from this repo's
users/<user>/, so an external consumer's user got no home-manager setup.
Add a `home` param (a path) and resolve in priority order: caller `home`
-> internal users/<user>/home-manager.nix -> OmniXY's home.nix. Internal
hosts keep their shims (unchanged); consumers now get a working home by
default. Unblocks the consumer template.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Surface mkSystem as a flake output and make its host resolution
non-throwing: internal hosts (this repo's hosts/<name>/) are still
imported automatically, but a consumer using OmniXY as a flake input
can now pass their own host via `modules` instead. First brick of the
dependency-model framework; the core module aggregate (nixosModules)
follows so a consumer's host can import OmniXY core.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
