opencv3: cuda: add a libstdc++ integration test

pkgs/development/libraries/opencv/3.x.nix

···
 { lib, stdenv
 , fetchFromGitHub
 , fetchpatch
+, callPackage
 , cmake, pkg-config, unzip, zlib, pcre, hdf5
 , glog, boost, gflags, protobuf3_21
 , config
···
 
   hardeningDisable = [ "bindnow" "relro" ];
 
-  passthru = lib.optionalAttrs enablePython { pythonPath = []; };
+  passthru = lib.optionalAttrs enablePython { pythonPath = []; } // {
+    tests = lib.optionalAttrs enableCuda {
+      no-libstdcxx-errors = callPackage ./libstdcxx-test.nix { attrName = "opencv3"; };
+    };
+  };
 
   meta = with lib; {
     description = "Open Computer Vision Library with more than 500 algorithms";

pkgs/development/libraries/opencv/4.x.nix

···
       };
     }
     // lib.optionalAttrs (enableCuda) {
-      no-libstdcxx-errors = callPackage ./libstdcxx-test.nix { };
+      no-libstdcxx-errors = callPackage ./libstdcxx-test.nix { attrName = "opencv4"; };
     };
   } // lib.optionalAttrs enablePython { pythonPath = [ ]; };
 

pkgs/development/libraries/opencv/libstdcxx-test.nix

···
-{ python3Packages, runCommand }:
+{ python3Packages, runCommand, attrName }:
 
-runCommand "${python3Packages.opencv4.pname}-libstdcxx-test"
+runCommand "${python3Packages.${attrName}.name}-libstdcxx-test"
 {
   nativeBuildInputs = [
-    (python3Packages.python.withPackages (ps: with ps; [
-      (opencv4.override { enableCuda = true; })
-      scikit-image
+    (python3Packages.python.withPackages (ps: [
+      (ps.${attrName}.override { enableCuda = true; })
+      ps.scikit-image
     ]))
   ];
 } ''