diff --git a/var/spack/repos/builtin/packages/gasnet/package.py b/var/spack/repos/builtin/packages/gasnet/package.py
index 70679d55d2e..a886d752700 100644
--- a/var/spack/repos/builtin/packages/gasnet/package.py
+++ b/var/spack/repos/builtin/packages/gasnet/package.py
@@ -61,7 +61,8 @@ class Gasnet(Package, CudaPackage, ROCmPackage):
     variant('debug', default=False, description="Enable library debugging mode")
 
     variant('cuda', default=False,
-            description='Enables support for the CUDA memory kind in some conduits')
+            description='Enables support for the CUDA memory kind in some conduits.\n' +
+            'NOTE: Requires CUDA Driver library be present on the build system')
 
     variant('rocm', default=False,
             description='Enables support for the ROCm/HIP memory kind in some conduits')
diff --git a/var/spack/repos/builtin/packages/upcxx/package.py b/var/spack/repos/builtin/packages/upcxx/package.py
index dfd7fbe304c..cbbc93285dc 100644
--- a/var/spack/repos/builtin/packages/upcxx/package.py
+++ b/var/spack/repos/builtin/packages/upcxx/package.py
@@ -60,7 +60,8 @@ class Upcxx(Package, CudaPackage, ROCmPackage):
             description='Enables MPI-based spawners and mpi-conduit')
 
     variant('cuda', default=False,
-            description='Enables UPC++ support for the CUDA memory kind')
+            description='Enables UPC++ support for the CUDA memory kind.\n' +
+            'NOTE: Requires CUDA Driver library be present on the build system')
 
     variant('rocm', default=False,
             description='Enables UPC++ support for the ROCm/HIP memory kind')