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"""Module discovery.
Every `deckit/modules/<name>.py` exporting `make(cfg) -> Module` is a module.
Discovery is lazy and file-based, so a new module is a new file: nothing here
lists the modules, and a not-yet-written one simply stays absent.
"""
import importlib
from pathlib import Path
from ..module import Registry
def build(cfg: dict) -> Registry:
enabled = cfg.get("modules", {})
modules = []
for path in sorted(Path(__file__).parent.glob("*.py")):
name = path.stem
if name == "__init__" or not enabled.get(name, True):
continue
try:
mod = importlib.import_module(f"{__name__}.{name}")
except ImportError:
continue
modules.append(mod.make(cfg))
return Registry(modules)
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