cuda-packages

Out of tree (Nixpkgs) experiments with packaging CUDA in an extensible way.

Most code lives in Nixpkgs and is copied/modified here for ease of development.

Notes

• Keeping only CUDA 11.8 and latest release of CUDA 12 (so long as it supports most of the CUDA ecosystem)
• Consider CUDA 11.8 EOL
• Python wrappers which invoke CMake do not always pass their environment to the CMake process. That means a number of the environment variables we set so CMake's auto-detection functionality just works is broken.
• autoAddDriverRunpath for CMake projects is a crutch -- the correct fix is to have the CMake project link against CUDA::cudart.
• cudaStdenv sets strictDeps=true and __structuredAttrs=true by default. Packages must have a good reason to opt out (e.g., Python packaging has not been updated yet to support structured attributes: NixOS/nixpkgs#347194).
• cudaStdenv uses a name prefix for more descriptive store path names.
  • Prefix is available as flags.cudaNamePrefix.

Todo

• A bunch of stuff (including docs)
• Update the setup hooks to use the logging functionality introduced in newer versions of Nixpkgs's setup.sh.
• Throw if trying to build for a capability newer than the CUDA package set can support.
• Figure out why separable compilation isn't working.
• Packages:
  • https://developer.download.nvidia.com/compute/nvcomp/redist/
  • https://developer.download.nvidia.com/compute/redist/nvshmem/
  • https://developer.download.nvidia.com/compute/nvidia-hpc-benchmarks/redist/
  • https://developer.nvidia.com/nvidia-hpc-sdk-249-downloads
  • https://github.com/NVIDIA/gdrcopy
  • https://github.com/NVIDIA/nvImageCodec
  • https://developer.download.nvidia.com/compute/nvidia-driver/redist/ (for use with nixGL?)