diff --git a/test/compilers/hello-sycl.nix b/test/compilers/hello-sycl.nix
index 9bdec078..ca421840 100644
--- a/test/compilers/hello-sycl.nix
+++ b/test/compilers/hello-sycl.nix
@@ -26,7 +26,7 @@ let
             cgh.single_task<hello_world>([=]() {
                 os << "Hello World! (on device)\n";
             });
-        });
+        }).wait();
 
         return 0;
     } catch (sycl::exception &e) {
@@ -64,6 +64,7 @@ stdenv.mkDerivation (finalAttrs: {
   passthru = {
     withPocl = finalAttrs.finalPackage.overrideAttrs (old: {
       nativeBuildInputs = old.nativeBuildInputs ++ [ pocl ];
+      name = old.name + "-pocl";
       env = (old.env or { }) // {
         POCL_DEBUG = "error,warn";
         POCL_CACHE_DIR = "/build/pocl_cache";
@@ -71,6 +72,8 @@ stdenv.mkDerivation (finalAttrs: {
         # Make PoCL report Intel vendor id so oneapi SYCL works
         POCL_DRIVER_VERSION_OVERRIDE = "2024.18.6.0.02_160000";
         POCL_CPU_VENDOR_ID_OVERRIDE = 32902;
+
+        HWLOC_SYNTHETIC = "node:1 core:1 pu:1";
       };
       doInstallCheck = true;
       installCheckPhase = ''
@@ -78,6 +81,7 @@ stdenv.mkDerivation (finalAttrs: {
       '';
     });
     withIntel = finalAttrs.finalPackage.overrideAttrs (old: {
+      name = old.name + "-intel";
       env = (old.env or { }) // {
         OCL_ICD_VENDORS = intelPackages.compiler + "/etc/OpenCL/vendors";
       };
diff --git a/test/compilers/icpx-ompss2.nix b/test/compilers/icpx-ompss2.nix
index d6d320c7..e9f79686 100644
--- a/test/compilers/icpx-ompss2.nix
+++ b/test/compilers/icpx-ompss2.nix
@@ -52,6 +52,7 @@ intelPackages.stdenv.mkDerivation (finalAttrs: {
   passthru = {
     withPocl = finalAttrs.finalPackage.overrideAttrs (old: {
       nativeBuildInputs = old.nativeBuildInputs ++ [ pocl ];
+      name = old.name + "-pocl";
       env = (old.env or { }) // {
         POCL_DEBUG = "error,warn";
         POCL_CACHE_DIR = "/build/pocl_cache";
@@ -59,6 +60,8 @@ intelPackages.stdenv.mkDerivation (finalAttrs: {
         # Make PoCL report Intel vendor id so oneapi SYCL works
         POCL_DRIVER_VERSION_OVERRIDE = "2024.18.6.0.02_160000";
         POCL_CPU_VENDOR_ID_OVERRIDE = 32902;
+
+        HWLOC_SYNTHETIC = "node:1 core:1 pu:1";
       };
       doInstallCheck = true;
       installCheckPhase = ''
@@ -67,6 +70,7 @@ intelPackages.stdenv.mkDerivation (finalAttrs: {
     });
 
     withIntel = finalAttrs.finalPackage.overrideAttrs (old: {
+      name = old.name + "-intel";
       env = (old.env or { }) // {
         OCL_ICD_VENDORS = intelPackages.compiler + "/etc/OpenCL/vendors";
       };