···

       
26
       
26
       
 
       


     

       
27
       
27
       
 
       
```ShellSession

     

       
28
       
28
       
 
       
$ export \

     

       
29
       
29
       
-
       
  OCL_ICD_VENDORS=`nix-build '<nixpkgs>' --no-out-link -A rocm-opencl-icd`/etc/OpenCL/vendors/

     

       
29
       
29
       
+
       
  OCL_ICD_VENDORS=`nix-build '<nixpkgs>' --no-out-link -A rocmPackages.clr.icd`/etc/OpenCL/vendors/

     

       
30
       
30
       
 
       
```

     

       
31
       
31
       
 
       


     

       
32
       
32
       
 
       
The second mechanism is to add the OpenCL driver package to

     
···

       
50
       
50
       
 
       


     

       
51
       
51
       
 
       
Modern AMD [Graphics Core

     

       
52
       
52
       
 
       
Next](https://en.wikipedia.org/wiki/Graphics_Core_Next) (GCN) GPUs are

     

       
53
       
53
       
-
       
supported through the rocm-opencl-icd package. Adding this package to

     

       
53
       
53
       
+
       
supported through the rocmPackages.clr.icd package. Adding this package to

     

       
54
       
54
       
 
       
[](#opt-hardware.opengl.extraPackages)

     

       
55
       
55
       
 
       
enables OpenCL support:

     

       
56
       
56
       
 
       


     

       
57
       
57
       
 
       
```nix

     

       
58
       
58
       
 
       
hardware.opengl.extraPackages = [

     

       
59
       
59
       
-
       
  rocm-opencl-icd

     

       
59
       
59
       
+
       
  rocmPackages.clr.icd

     

       
60
       
60
       
 
       
];

     

       
61
       
61
       
 
       
```

     

       
62
       
62