Same footgun as the home.packages fix, found by sweeping the tree for
`mkDefault` on list options that other modules contribute to at normal
priority (so filterOverrides discards the mkDefault def entirely):
* themes/engine/sddm.nix — environment.systemPackages = mkDefault
[ nomarchy-sddm-theme ] was dropped, so the SDDM greeter theme package
was never installed (unthemed login).
* themes/engine/plymouth.nix — boot.kernelParams = mkDefault [ quiet
splash loglevel=3 … ] was dropped, so boots weren't quiet/clean.
* features/desktop/waybar/default.nix — home.packages = mkDefault
[ font-awesome ] was dropped, so waybar's icon font was missing.
Verified via eval: nomarchy-sddm-theme now in systemPackages, "quiet" in
kernelParams, font-awesome in home.packages. Left the genuinely-safe
single-definition mkDefaults alone (plymouth.themePackages,
resolved.fallbackDns, hyprsunset.extraArgs) and the hybridGPU videoDrivers
mkDefault (it outranks nixpkgs' mkOptionDefault on real hardware).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
`themes/engine/sddm.nix` defaulted `services.displayManager.autoLogin`
to `enable = true; user = "nomarchy";` (both mkDefault). The installer
flow overrode both with the real username at normal priority, so this
was invisible there — but a hand-migrated user (per docs/MIGRATION.md)
who imported `nomarchy.nixosModules.system` without setting
`autoLogin.user` would auto-login as a nonexistent "nomarchy" user and
SDDM would error. `docs/MIGRATION.md` even documented the override as a
post-import chore.
Flipped the default to `enable = lib.mkDefault false`. Installer
generates `enable = true` directly so its flow is unchanged. Migration
flow now gets the safe default — opt-in instead of opt-out — and the
docs row is updated to reflect the new shape.
The hardcoded "nomarchy" username fallback for `autoLogin.user` is the
same class of bug as the impermanence persistence block was. A future
roadmap row to consolidate "primary user" across impermanence,
autoLogin, and any future modules might be worthwhile, but it's
deferred — this commit is the immediate fix.
Found during Pillar 8 audit of first-boot UX.
- Reorganize directory structure into core/, features/, and themes/
- Colocate application Nix logic, configs, scripts, and theme overrides
- Implement 'Inversion of Control' for theming: apps now pull theme-specific layouts
- Update flake.nix and shared library paths to match the new structure
- Document the new Feature-Centric architecture in README.md
