patchpkg: patch python to use devbox CUDA libs #2296
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Automatically patch python to use any `cudaPackages.*` packages that are in devbox.json. This will only work if the CUDA drivers are already installed on the host system. The patching process is: 1. When generating the patch flake, look for the system's `libcuda.so` library (installed by the driver) and copy it into the flake's directory. 2. Nix copies the flake's source directory (and therefore libcuda.so) into the nix store when building it. 3. The flake calls `devbox patch` which adds a `DT_NEEDED` entry to the python binary for `libcuda.so`. It also adds the lib directories of any other `cudaPackages.*` packages that it finds in the environment.
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savil
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Sep 25, 2024
savil
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Sep 25, 2024
mikeland73
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Sep 26, 2024
| @@ -302,6 +322,65 @@ func (d *DerivationBuilder) findRemovedRefs(ctx context.Context, pkg *packageFS) | |||
| return refs, nil | |||
| } | |||
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| func (d *DerivationBuilder) findCUDA(ctx context.Context, out *packageFS) error { | |||
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Food for future thought: Is there a way to do this in a more plugin-like way? Maybe we allow built in plugins to use go code (or in the future compile plugins as needed).
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I like the idea of aligning plugins and patching. This code runs as part of the flake builder (in the nix build sandbox), so plugins would just need something similar.
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Automatically patch python to use any
cudaPackages.*packages that are in devbox.json. This will only work if the CUDA drivers are already installed on the host system.The patching process is:
libcuda.solibrary (installed by the driver) and copy it into the flake’s directory.devbox patchwhich adds aDT_NEEDEDentry to the python binary forlibcuda.so. It also adds the lib directories of any othercudaPackages.*packages that it finds in the environment.