Document MVC env and config vars

Author: brandon-b-miller

docs/source/reference/envvars.rst

@@ -120,4 +120,14 @@ target.
    ``/usr/local/cuda/include``. On Windows, the default is
    ``$env:CUDA_PATH\include``.
 
+.. envvar:: NUMBA_CUDA_ENABLE_MINOR_VERSION_COMPATIBILITY
 
+      Enable minor version compatibility for the CUDA driver. Requires the
+      ``cubinlinker`` and ``ptxcompiler`` packages to be installed. Provides minor
+      version compatibility for driver versions less than 12.0.
+
+.. envvar:: NUMBA_CUDA_ENABLE_PYNVJITLINK
+
+   Use ``pynvjitlink`` for minor version compatibility. Requires the ``pynvjitlink``
+   package to be installed. Provides minor version compatibility for driver versions
+   greater than 12.0.

docs/source/user/minor_version_compatibility.rst

@@ -65,7 +65,8 @@ MVC support is enabled by setting the environment variable:
 
 .. code:: bash
 
-   export NUMBA_CUDA_ENABLE_MINOR_VERSION_COMPATIBILITY=1
+   export NUMBA_CUDA_ENABLE_MINOR_VERSION_COMPATIBILITY=1 # CUDA 11
+   export NUMBA_CUDA_ENABLE_PYNVJITLINK=1 # CUDA 12
 
 
 or by setting a configuration variable prior to using any CUDA functionality in
@@ -74,7 +75,8 @@ Numba:
 .. code:: python
 
    from numba import config
-   config.CUDA_ENABLE_MINOR_VERSION_COMPATIBILITY = True
+   config.CUDA_ENABLE_MINOR_VERSION_COMPATIBILITY = True # CUDA 11
+   config.CUDA_ENABLE_PYNVJITLINK = True # CUDA 12
 
 
 References