shader-slang: add hello-world test

  unordered_dense,

  versionCheckHook,

  gitUpdater,

  runCommandCC,

  # Required for compiling to SPIR-V or GLSL

  withGlslang ? true,

  versionCheckProgramArg = "-v";

  doInstallCheck = true;

  passthru.updateScript = gitUpdater {

  passthru = {

    updateScript = gitUpdater {

      rev-prefix = "v";

      ignoredVersions = "*-draft";

    };

    tests.hello =

      runCommandCC "compile-hello-world"

        {

          # Intermediate files generated by slangc trigger this warning

          NIX_CFLAGS_COMPILE = "-Wno-error=format-security";

        }

        ''

          cat > hello.slang << EOF

          export __extern_cpp int main()

          {

              printf("Hello, world!\n");

              return 0;

          }

          EOF

          ${lib.getExe finalAttrs.finalPackage} hello.slang -target executable -o hello

          ./hello | grep "Hello, world!"

          touch $out

        '';

  };

  meta = {

    description = "Shading language that makes it easier to build and maintain large shader codebases in a modular and extensible fashion";