uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/tools/analysis/include-what-you-use/default.nix

@@ -0,0 +1,37 @@
+{ lib, stdenv, fetchurl, cmake, llvmPackages, python3 }:
+
+stdenv.mkDerivation rec {
+  pname = "include-what-you-use";
+  # Also bump llvmPackages in all-packages.nix to the supported version!
+  version = "0.18";
+
+  src = fetchurl {
+    sha256 = "sha256-kQL8hBkpR1ffhqic5uwwX42QqBjR8lmKE50V6xiUuPM=";
+    url = "${meta.homepage}/downloads/${pname}-${version}.src.tar.gz";
+  };
+
+  nativeBuildInputs = with llvmPackages; [ cmake llvm.dev llvm python3];
+  buildInputs = with llvmPackages; [ libclang clang-unwrapped ];
+
+  cmakeFlags = [ "-DIWYU_LLVM_ROOT_PATH=${llvmPackages.clang-unwrapped}" ];
+
+  postInstall = ''
+    substituteInPlace $out/bin/iwyu_tool.py \
+      --replace "'include-what-you-use'" "'$out/bin/include-what-you-use'"
+  '';
+
+  meta = with lib; {
+    description = "Analyze #includes in C/C++ source files with clang";
+    longDescription = ''
+      For every symbol (type, function variable, or macro) that you use in
+      foo.cc, either foo.cc or foo.h should #include a .h file that exports the
+      declaration of that symbol.  The main goal of include-what-you-use is to
+      remove superfluous #includes, both by figuring out what #includes are not
+      actually needed for this file (for both .cc and .h files), and by
+      replacing #includes with forward-declares when possible.
+    '';
+    homepage = "https://include-what-you-use.org";
+    license = licenses.bsd3;
+    platforms = platforms.unix;
+  };
+}