Fix package setup

src/pips/gradio_app.py

@@ -21,7 +21,10 @@ import os
 import tempfile
 import time
 
-os.system("pip install -e .")
+from pathlib import Path
+import sys
+path_root = Path(__file__).parents[2]
+sys.path.append(str(path_root))
 
 SAVED_RUNS_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), "saved_examples"))
 
@@ -34,9 +37,9 @@ except ImportError as exc:  # pragma: no cover - handled at runtime
         "Install it via `pip install gradio`."
     ) from exc
 
-from pips.core import PIPSSolver
-from pips.models import AVAILABLE_MODELS, get_model
-from pips.utils import RawInput
+from src.pips.core import PIPSSolver
+from src.pips.models import AVAILABLE_MODELS, get_model
+from src.pips.utils import RawInput
 
 
 # ---------------------------------------------------------------------------