Add test for sycl-ls with PoCL and Intel OCL

overlay.nix

@@ -125,6 +125,8 @@ let
     pocl = callPackage ./test/compilers/pocl.nix { };
     ocl-run-pocl = ocl-build.test-icd;
     ocl-run-pocl-noicd = ocl-build-noicd.test-noicd;
+
+    sycl-ls = callPackage ./test/compilers/sycl-ls.nix { };
   };
 
   # For now, only build toplevel packages in CI/Hydra

test/compilers/sycl-ls.nix

@@ -0,0 +1,40 @@
+{
+  intelPackages,
+  pocl,
+  runCommandWith,
+  symlinkJoin,
+  clinfo,
+}:
+
+runCommandWith
+  {
+    name = "sycl-ls";
+    inherit (intelPackages) stdenv;
+    runLocal = true;
+    derivationArgs = {
+      nativeBuildInputs = [ clinfo ];
+      env = {
+        OCL_ICD_VENDORS = symlinkJoin {
+          name = "vendors";
+          paths = builtins.map (p: p + "/etc/OpenCL/vendors") [
+            intelPackages.compiler
+            pocl
+          ];
+        };
+
+        POCL_DRIVER_VERSION_OVERRIDE = "2024.18.6.0.02_160000";
+        POCL_CPU_VENDOR_ID_OVERRIDE = 32902;
+        POCL_DEBUG = "error,warn";
+        POCL_CACHE_DIR = "/build/pocl_cache";
+
+        HWLOC_SYNTHETIC = "node:1 core:1 pu:1";
+      };
+    };
+  }
+  # bash
+  ''
+    clinfo -l | tee -a $out
+    sycl-ls | tee -a $out
+
+    test x6 = x"$(cat $out | wc -l)" # 2 lines per clinfo entry and 1 per sycl-ls
+  ''