This is needed for faster builds when debugging the opencv derivation,
and it's more consistent with other cuda-enabled packages
-DCUDA_GENERATION seems to expect architecture names, so we refactor
cudaFlags to facilitate easier extraction of the configured archnames
with structuredAttrs lists will be bash arrays which cannot be exported
which will be a issue with some patches and some wrappers like cc-wrapper
this makes it clearer that NIX_CFLAGS_COMPILE must be a string as lists
in env cause a eval failure
There are many different versions of the `cudatoolkit` and related
cuda packages, and it can be tricky to ensure they remain compatible.
- `cudaPackages` is now a package set with `cudatoolkit`, `cudnn`, `cutensor`, `nccl`, as well as `cudatoolkit` split into smaller packages ("redist");
- expressions should now use `cudaPackages` as parameter instead of the individual cuda packages;
- `makeScope` is now used, so it is possible to use `.overrideScope'` to set e.g. a different `cudnn` version;
- `release-cuda.nix` is introduced to easily evaluate cuda packages using hydra.
This makes packages use lapack and blas, which can wrap different
BLAS/LAPACK implementations.
treewide: cleanup from blas/lapack changes
A few issues in the original treewide:
- can’t assume blas64 is a bool
- unused commented code
- mxnet now builds the open source MKL DNN library. However, this
was not included with the build.
- mxnet builds its own OpenMP library, even when OpenMP is provided
by the system. This leads to problems, so remove the included
OpenMP implementation:
https://github.com/apache/incubator-mxnet/pull/12160
