Remove NVidia URL for OSX torch installation on OSX.

export install_dir="$HOME"

export COMMANDLINE_ARGS="--skip-torch-cuda-test --upcast-sampling --no-half-vae --use-cpu interrogate"

export TORCH_COMMAND="pip install torch torchvision --extra-index-url https://download.pytorch.org/whl/cu118"

export TORCH_COMMAND="pip install torch torchvision"

export K_DIFFUSION_REPO="https://github.com/brkirch/k-diffusion.git"

export K_DIFFUSION_COMMIT_HASH="51c9778f269cedb55a4d88c79c0246d35bdadb71"

export PYTORCH_ENABLE_MPS_FALLBACK=1