Use pin_compatible to ensure that lower CTKs can be used (#1462)

The runtime requirement for the CTK is weaker than the build-time requirement. We allow installing raft into environments with an older CTK (any 11.x) than the build requirement (11.8)

Authors:
  - Vyas Ramasubramani (https://github.com/vyasr)

Approvers:
  - Corey J. Nolet (https://github.com/cjnolet)
  - Divye Gala (https://github.com/divyegala)
  - AJ Schmidt (https://github.com/ajschmidt8)
  - Bradley Dice (https://github.com/bdice)

URL: #1462

conda/recipes/libraft/meta.yaml

@@ -52,6 +52,9 @@ outputs:
       host:
         - librmm ={{ minor_version }}
         - cudatoolkit {{ cuda_version }}
+      run:
+        - {{ pin_compatible('cudatoolkit', max_pin='x', min_pin='x') }}
+        - librmm ={{ minor_version }}
     about:
       home: https://rapids.ai/
       license: Apache-2.0
@@ -68,7 +71,6 @@ outputs:
       run:
         - {{ pin_subpackage('libraft-headers-only', exact=True) }}
         - cuda-profiler-api {{ cuda_profiler_api_run_version }}
-        - cudatoolkit {{ cuda_version }}
         - librmm ={{ minor_version }}
         - libcublas {{ libcublas_run_version }}
         - libcublas-dev {{ libcublas_run_version }}
@@ -101,6 +103,7 @@ outputs:
         - sysroot_{{ target_platform }} {{ sysroot_version }}
       host:
         - {{ pin_subpackage('libraft-headers', exact=True) }}
+        - cudatoolkit {{ cuda_version }}
         - cuda-profiler-api {{ cuda_profiler_api_host_version }}
         - libcublas {{ libcublas_host_version }}
         - libcublas-dev {{ libcublas_host_version }}
@@ -135,6 +138,7 @@ outputs:
         - sysroot_{{ target_platform }} {{ sysroot_version }}
       host:
         - {{ pin_subpackage('libraft', exact=True) }}
+        - cudatoolkit {{ cuda_version }}
         - cuda-profiler-api {{ cuda_profiler_api_host_version }}
         - gmock {{ gtest_version }}
         - gtest {{ gtest_version }}
@@ -200,6 +204,7 @@ outputs:
         - sysroot_{{ target_platform }} {{ sysroot_version }}
       host:
         - {{ pin_subpackage('libraft', exact=True) }}
+        - cudatoolkit {{ cuda_version }}
         - libcublas {{ libcublas_host_version }}
         - libcublas-dev {{ libcublas_host_version }}
         - glog {{ glog_version }}

cpp/include/raft/distance/detail/kernels/gram_matrix.cuh

@@ -20,7 +20,7 @@
 #include <raft/core/device_resources.hpp>
 #include <raft/distance/distance.cuh>
 #include <raft/distance/distance_types.hpp>
-//#include <raft/sparse/detail/cusparse_wrappers.h>
+// #include <raft/sparse/detail/cusparse_wrappers.h>
 #include <raft/sparse/distance/distance.cuh>
 #include <raft/sparse/linalg/spmm.cuh>