Fail to install diff-gaussian-rasterization

[evearmadillo]

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Hello, I've followed https://github.com/henrypearce4D advice on adding VS path to env variables, but I ran into this error:

(base) C:\Users\evebo\gaussian-splatting>git submodule update --init --recursive
Submodule path 'submodules/diff-gaussian-rasterization': checked out '59f5f77e3ddbac3ed9db93ec2cfe99ed6c5d121d'
Submodule path 'submodules/diff-gaussian-rasterization/third_party/glm': checked out '5c46b9c07008ae65cb81ab79cd677ecc1934b903'

(base) C:\Users\evebo\gaussian-splatting>pip install submodules\diff-gaussian-rasterization
Processing c:\users\evebo\gaussian-splatting\submodules\diff-gaussian-rasterization
  Preparing metadata (setup.py) ... error
  error: subprocess-exited-with-error

  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [6 lines of output]
      Traceback (most recent call last):
        File "<string>", line 2, in <module>
        File "<pip-setuptools-caller>", line 34, in <module>
        File "C:\Users\evebo\gaussian-splatting\submodules\diff-gaussian-rasterization\setup.py", line 13, in <module>
          from torch.utils.cpp_extension import CUDAExtension, BuildExtension
      ModuleNotFoundError: No module named 'torch'
      [end of output]

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

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

In the gaussian-renderer init.py code there're missing imports from GaussianRasterization.

How can I resolve this? Thank you in advance!