Add initial CLI support

trovedb/user_env.py

@@ -0,0 +1,19 @@
+"""Environment for Trove"""
+
+import os
+from pathlib import Path
+
+TROVE_HOME_DIR: Path = Path.home()
+TROVE_USER_CONFIG_PATH: Path = TROVE_HOME_DIR / ".trove_config"
+
+_ENV_TROVEBASE: str|None = os.environ.get("TROVEBASE", None)
+
+def _search_trovebase() -> Path | str | None:
+    if _ENV_TROVEBASE is not None:
+        return Path(_ENV_TROVEBASE)
+    for path in Path.cwd().parents:
+        if (path / ".trove").exists():
+            return path
+    return None
+
+TROVEBASE: Path | str | None = _search_trovebase()