Add simple clinfo test for PoCL

overlay.nix

@@ -93,6 +93,8 @@ let
     clangNosvOmpv-ld = callPackage ./test/compilers/clang-openmp-ld.nix {
       stdenv = final.stdenvClangOmpss2NodesOmpv;
     };
+
+    pocl = callPackage ./test/compilers/pocl.nix { };
   };
 
   pkgs = filterAttrs (_: isDerivation) bscPkgs;

test/compilers/pocl.nix

@@ -0,0 +1,26 @@
+{
+  runCommand,
+  pocl,
+  clinfo,
+  writableTmpDirAsHomeHook,
+}:
+
+runCommand "clinfo-pocl"
+  {
+    nativeBuildInputs = [
+      clinfo
+      writableTmpDirAsHomeHook
+    ];
+
+    requiredSystemFeatures = [ "sys-devices" ];
+
+    env = {
+      POCL_DEBUG = "error,warn";
+      OCL_ICD_VENDORS = "${pocl}/etc/OpenCL/vendors";
+    };
+  }
+  ''
+    set -x
+    clinfo | tee $out
+    set +x
+  ''