im using ubuntu arm64 cpu only : (deca) ubuntu@ubuntu-virtual-machine:~/DECA$ pip install -r requirements.txt
Collecting numpy>=1.18.5 (from -r requirements.txt (line 3))
  Downloading numpy-1.21.6-cp37-cp37m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl.metadata (2.1 kB)
Collecting scipy>=1.4.1 (from -r requirements.txt (line 4))
  Downloading scipy-1.7.3-cp37-cp37m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl.metadata (2.2 kB)
Collecting chumpy>=0.69 (from -r requirements.txt (line 5))
  Downloading chumpy-0.70.tar.gz (50 kB)
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  Preparing metadata (setup.py) ... done
Collecting scikit-image>=0.15 (from -r requirements.txt (line 6))
  Downloading scikit_image-0.19.3-cp37-cp37m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl.metadata (8.0 kB)
Collecting opencv-python>=4.1.1 (from -r requirements.txt (line 7))
  Downloading opencv_python-4.10.0.84-cp37-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl.metadata (20 kB)
Collecting PyYAML==5.1.1 (from -r requirements.txt (line 9))
  Downloading PyYAML-5.1.1.tar.gz (274 kB)
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  Preparing metadata (setup.py) ... done
ERROR: Ignored the following versions that require a different python version: 0.20.0 Requires-Python >=3.8; 0.20.0rc2 Requires-Python >=3.8; 0.20.0rc3 Requires-Python >=3.8; 0.20.0rc4 Requires-Python >=3.8; 0.20.0rc5 Requires-Python >=3.8; 0.20.0rc6 Requires-Python >=3.8; 0.20.0rc7 Requires-Python >=3.8; 0.20.0rc8 Requires-Python >=3.8; 0.21.0 Requires-Python >=3.8; 0.21.0rc0 Requires-Python >=3.8; 0.21.0rc1 Requires-Python >=3.8; 0.22.0 Requires-Python >=3.9; 0.22.0rc1 Requires-Python >=3.9; 0.23.0 Requires-Python >=3.10; 0.23.0rc0 Requires-Python >=3.10; 0.23.0rc2 Requires-Python >=3.10; 0.23.1 Requires-Python >=3.10; 0.23.2 Requires-Python >=3.10; 0.23.2rc1 Requires-Python >=3.10; 0.24.0 Requires-Python >=3.9; 0.24.0rc1 Requires-Python >=3.9; 0.25.0rc0 Requires-Python >=3.10; 0.25.0rc1 Requires-Python >=3.10; 1.10.0 Requires-Python <3.12,>=3.8; 1.10.0rc1 Requires-Python <3.12,>=3.8; 1.10.0rc2 Requires-Python <3.12,>=3.8; 1.10.1 Requires-Python <3.12,>=3.8; 1.11.0 Requires-Python <3.13,>=3.9; 1.11.0rc1 Requires-Python <3.13,>=3.9; 1.11.0rc2 Requires-Python <3.13,>=3.9; 1.11.1 Requires-Python <3.13,>=3.9; 1.11.2 Requires-Python <3.13,>=3.9; 1.11.3 Requires-Python <3.13,>=3.9; 1.11.4 Requires-Python >=3.9; 1.12.0 Requires-Python >=3.9; 1.12.0rc1 Requires-Python >=3.9; 1.12.0rc2 Requires-Python >=3.9; 1.13.0 Requires-Python >=3.9; 1.13.0rc1 Requires-Python >=3.9; 1.13.1 Requires-Python >=3.9; 1.14.0 Requires-Python >=3.10; 1.14.0rc1 Requires-Python >=3.10; 1.14.0rc2 Requires-Python >=3.10; 1.14.1 Requires-Python >=3.10; 1.22.0 Requires-Python >=3.8; 1.22.1 Requires-Python >=3.8; 1.22.2 Requires-Python >=3.8; 1.22.3 Requires-Python >=3.8; 1.22.4 Requires-Python >=3.8; 1.23.0 Requires-Python >=3.8; 1.23.1 Requires-Python >=3.8; 1.23.2 Requires-Python >=3.8; 1.23.3 Requires-Python >=3.8; 1.23.4 Requires-Python >=3.8; 1.23.5 Requires-Python >=3.8; 1.24.0 Requires-Python >=3.8; 1.24.1 Requires-Python >=3.8; 1.24.2 Requires-Python >=3.8; 1.24.3 Requires-Python >=3.8; 1.24.4 Requires-Python >=3.8; 1.25.0 Requires-Python >=3.9; 1.25.1 Requires-Python >=3.9; 1.25.2 Requires-Python >=3.9; 1.26.0 Requires-Python <3.13,>=3.9; 1.26.1 Requires-Python <3.13,>=3.9; 1.26.2 Requires-Python >=3.9; 1.26.3 Requires-Python >=3.9; 1.26.4 Requires-Python >=3.9; 1.8.0 Requires-Python >=3.8,<3.11; 1.8.0rc1 Requires-Python >=3.8,<3.11; 1.8.0rc2 Requires-Python >=3.8,<3.11; 1.8.0rc3 Requires-Python >=3.8,<3.11; 1.8.0rc4 Requires-Python >=3.8,<3.11; 1.8.1 Requires-Python >=3.8,<3.11; 1.9.0 Requires-Python >=3.8,<3.12; 1.9.0rc1 Requires-Python >=3.8,<3.12; 1.9.0rc2 Requires-Python >=3.8,<3.12; 1.9.0rc3 Requires-Python >=3.8,<3.12; 1.9.1 Requires-Python >=3.8,<3.12; 1.9.2 Requires-Python >=3.8; 1.9.3 Requires-Python >=3.8; 2.0.0 Requires-Python >=3.9; 2.0.1 Requires-Python >=3.9; 2.0.2 Requires-Python >=3.9; 2.1.0 Requires-Python >=3.10; 2.1.0rc1 Requires-Python >=3.10; 2.1.1 Requires-Python >=3.10; 2.1.2 Requires-Python >=3.10; 6.0.2 Requires-Python >=3.8
ERROR: Could not find a version that satisfies the requirement torch==1.6.0 (from versions: 1.8.0, 1.8.1, 1.9.0, 1.10.0, 1.10.1, 1.10.2, 1.11.0, 1.12.0, 1.12.1, 1.13.0, 1.13.1)
ERROR: No matching distribution found for torch==1.6.0
(deca) ubuntu@ubuntu-virtual-machine:~/DECA$