Spaces build: install local detectron2 in postBuild with no build isolation; remove runtime pip install

mvp.py

@@ -47,7 +47,6 @@ except Exception:
     pass
 
 os.environ.setdefault("MAX_JOBS", "1")
-os.system("python -m pip install --no-build-isolation -e ./MaskClustering/third_party/detectron2/")
 REPO_ROOT = os.path.dirname(os.path.abspath(__file__))
 sys.path.append(os.path.join(REPO_ROOT, "vggt"))
 MK_PATH = os.path.join(REPO_ROOT, "MaskClustering")

postBuild

@@ -1,7 +1,12 @@
 #!/bin/sh
 set -e
 
-echo "[postBuild] Installing vendored detectron2 from MaskClustering/third_party/detectron2 ..."
-pip install --no-cache-dir -e MaskClustering/third_party/detectron2
+echo "[postBuild] Prepare build tools..."
+python -m pip install -U pip setuptools wheel ninja
 
+echo "[postBuild] Installing vendored detectron2 from MaskClustering/third_party/detectron2 ..."
+# Torch уже установлен из requirements.txt к моменту postBuild.
+# Отключаем build isolation, чтобы сборка видела установленный torch.
+export MAX_JOBS=${MAX_JOBS:-1}
+python -m pip install --no-build-isolation -e MaskClustering/third_party/detectron2