install detectron2 meets some problems

--> python -m pip install -e detectron2
Looking in indexes: http://mirrors.aliyun.com/pypi/simple
Obtaining file:///root/rcbevdet/detectron2
  Installing build dependencies ... done
  Checking if build backend supports build_editable ... done
  Getting requirements to build editable ... error
  error: subprocess-exited-with-error
  
  × Getting requirements to build editable did not run successfully.
  │ exit code: 1
  ╰─> [19 lines of output]
      Traceback (most recent call last):
        File "/root/rcbevdet/myenv/lib/python3.8/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 389, in <module>
          main()
        File "/root/rcbevdet/myenv/lib/python3.8/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 373, in main
          json_out["return_val"] = hook(**hook_input["kwargs"])
        File "/root/rcbevdet/myenv/lib/python3.8/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 157, in get_requires_for_build_editable
          return hook(config_settings)
        File "/tmp/pip-build-env-8zw8gi3a/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 482, in get_requires_for_build_editable
          return self.get_requires_for_build_wheel(config_settings)
        File "/tmp/pip-build-env-8zw8gi3a/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 333, in get_requires_for_build_wheel
          return self._get_build_requires(config_settings, requirements=[])
        File "/tmp/pip-build-env-8zw8gi3a/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 303, in _get_build_requires
          self.run_setup()
        File "/tmp/pip-build-env-8zw8gi3a/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 521, in run_setup
          super().run_setup(setup_script=setup_script)
        File "/tmp/pip-build-env-8zw8gi3a/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 319, in run_setup
          exec(code, locals())
        File "<string>", line 10, in <module>
      ModuleNotFoundError: No module named 'torch'
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× Getting requirements to build editable did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.