Install clang, cuda-crt and cuda-cudart-dev

Try and fix `fatal error: 'stddef.h' file not found`; 'cuda_runtime.h' file not found and so on. Revert back to symlinking nvtiff header and shared object files into $CONDA_PREFIX/targets/x86_64-linux/lib/, while also setting RUSTFLAGS, xref weiji14/cog3pio@186fed2

Author: weiji14

.readthedocs.yml

@@ -9,7 +9,11 @@ build:
     post_install:
       # https://github.com/weiji14/cog3pio/pull/71
       - export CONDA_PREFIX="$CONDA_ENVS_PATH/$CONDA_DEFAULT_ENV";
-        BINDGEN_EXTRA_CLANG_ARGS="-I $CONDA_PREFIX/include"
+        ln -s $CONDA_PREFIX/include/nvtiff.h $CONDA_PREFIX/targets/x86_64-linux/include/nvtiff.h;
+        ln -s $CONDA_PREFIX/include/nvtiff_version.h $CONDA_PREFIX/targets/x86_64-linux/include/nvtiff_version.h;
+        ln -s $CONDA_PREFIX/lib/libnvtiff.so $CONDA_PREFIX/targets/x86_64-linux/lib/libnvtiff.so;
+        RUSTFLAGS="-L$CONDA_PREFIX/targets/x86_64-linux/lib"
+        BINDGEN_EXTRA_CLANG_ARGS="-I $CONDA_PREFIX/targets/x86_64-linux/include"
         MATURIN_PEP517_ARGS="--features cuda,pyo3"
         mamba run --prefix "$CONDA_PREFIX" pip install -v "cog3pio[cuda] @ git+https://github.com/weiji14/cog3pio.git@ce268b0ccb58ff0c7e329cdf38f2326a4fac22e9"
       - pip list

ci/doc.yml

@@ -2,6 +2,9 @@ name: cupy-xarray-doc
 channels:
   - conda-forge
 dependencies:
+  - clang
+  - cuda-crt
+  - cuda-cudart-dev
   - cupy-core
   - pip
   - python=3.13