users/hosting import 'settings.registration' at boot but simple_module_settings isn't a declared dep — ModuleNotFoundError

[antosubash]

Summary

A freshly-scaffolded host app crashes on first boot with ModuleNotFoundError: No module named 'settings'. The cause is that users/module.py and simple_module_hosting/app_builder.py both call importlib.import_module(\"settings.registration\") at startup, but simple_module_settings (which provides the settings top-level package) is not in the scaffold's default dependency list, and isn't pulled in transitively by simple_module_hosting or simple_module_users either.

Reproduction

uvx --from simple_module_cli sm new my-app --db sqlite --preset standard -y --no-install
cd my-app
# (after working around #105 and #106)
make install
make migrate
uv run python -c "from main import app"

Failure tail:

File ".../site-packages/users/module.py", line 55, in register_settings
 register_module_settings = importlib.import_module(
 ^^^^^^^^^^^^^^^^^^^^^^^^
File ".../python3.12/importlib/__init__.py", line 90, in _gcd_import
ModuleNotFoundError: No module named 'settings'

Source references

simple_module_hosting/app_builder.py:209-219

# We resolve `settings.registration` via importlib rather than a plain
# `from settings.registration import ...`: ...
_register_module_settings = importlib.import_module(
 "settings.registration"
).register_module_settings

users/module.py:55-58 does the same.

simple_module_settings==0.0.6 is published on PyPI (pip index versions simple-module-settings → 0.0.6) and provides settings/registration.py, so it's clearly the intended provider — it's just not declared.

Generated pyproject.toml deps (no simple_module_settings)

dependencies = [
 "simple_module_hosting==0.0.6",
 "simple_module_auth==0.0.6",
 "simple_module_users==0.0.6",
 "simple_module_dashboard==0.0.6",
 "simple_module_permissions==0.0.6",
]

Suggested fix

Either:

1. Make simple_module_hosting declare simple_module_settings as a runtime dependency (cleanest — every host needs it because hosting itself imports it), or
2. Have sm new add simple_module_settings to the host's dependency list.

(1) is more robust because every module that uses register_module_settings (e.g. users) would otherwise need to depend on it individually.

Workaround

uv add simple_module_settings==0.0.6

Environment

• simple_module_cli, simple_module_hosting, simple_module_users all at 0.0.6
• uv 0.7.5
• macOS 25.4.0 (arm64), Python 3.12.10

[antosubash]

Fixed in 0.0.7 — verified by booting a fresh sm new host: uv run python -c 'from main import app' succeeds (77 routes loaded), Loaded 5 module(s): Auth, Settings, Users, Dashboard, Permissions. The settings.registration ImportError is gone (presumably simple_module_settings is now pulled in transitively, or the lookup fell back).