Restructure extension to cache extra ROCm and XPU dependencies #257
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Before this change the `torch-extension` directory was just a derivation that built an extension for a given configuration + build set. The downside of this approach was that we could not easily get things like - The standard environment to be used by dev shells. - Overrides for caching. For instance, we override ROCm's `clr` and XPU's `oneapi-torch-dev` and `onednn-xpu` to use stdenv with an old glibc. This change modifies `torch-extension` so that we can instantiate it given a build set. A set is returned that can give access to the things mentioned above, as well as mkExtension and mkNoArchExtension functions. We assign this set to the corresponding build set, so that it is directly accessible from the build set.
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Before this change the
torch-extensiondirectory was just a derivation that built an extension for a given configuration + build set. The downside of this approach was that we could not easily get things likeclrand XPU'soneapi-torch-devandonednn-xputo use stdenv with an old glibc.This change modifies
torch-extensionso that we can instantiate it given a build set. A set is returned that can give access to the things mentioned above, as well as mkExtension and mkNoArchExtension functions. We assign this set to the corresponding build set, so that it is directly accessible from the build set.Use this change to add ROCm and XPU overrides to the cache.