clang_15: add nostdlibinc flag

Port of 44165d36576 ("llvmPackages_{14, git}.clang: add nostdlibinc flag")
to Clang 15.  It was originally thought this wasn't needed[1], but it is,
to fix expressions like the following:

	with import ./. {};

	llvmPackages_15.libcxxStdenv.mkDerivation {
	  name = "libcxx-stdenv-c++-test";

	  dontUnpack = true;

	  input = ''
	    #include <cstdlib>

	    int main() {
	        std::abort();
	        return 0;
	    }
	  '';
	  passAsFile = [ "input" ];

	  installPhase = ''
	    $CXX -c -o $out -x c++ $inputPath
	   '';
	}

[1]: https://github.com/NixOS/nixpkgs/pull/194634#issue-1398202534

0 files changed, 0 insertions, 0 deletions