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/compilers/rust/clippy.nix

@@ -0,0 +1,34 @@
+{ stdenv, lib, rustPlatform, rustc, Security, patchelf }:
+rustPlatform.buildRustPackage {
+  pname = "clippy";
+  inherit (rustc) version src;
+
+  # the rust source tarball already has all the dependencies vendored, no need to fetch them again
+  cargoVendorDir = "vendor";
+  buildAndTestSubdir = "src/tools/clippy";
+
+  # changes hash of vendor directory otherwise
+  dontUpdateAutotoolsGnuConfigScripts = true;
+
+  buildInputs = [ rustc rustc.llvm ] ++ lib.optionals stdenv.isDarwin [ Security ];
+
+  # fixes: error: the option `Z` is only accepted on the nightly compiler
+  RUSTC_BOOTSTRAP = 1;
+
+  # Without disabling the test the build fails with:
+  # error: failed to run custom build command for `rustc_llvm v0.0.0
+  #   (/private/tmp/nix-build-clippy-1.36.0.drv-0/rustc-1.36.0-src/src/librustc_llvm)
+  doCheck = false;
+
+  preFixup = lib.optionalString stdenv.isDarwin ''
+    install_name_tool -add_rpath "${rustc}/lib" $out/bin/clippy-driver
+  '';
+
+  meta = with lib; {
+    homepage = "https://rust-lang.github.io/rust-clippy/";
+    description = "A bunch of lints to catch common mistakes and improve your Rust code";
+    maintainers = with maintainers; [ basvandijk ];
+    license = with licenses; [ mit asl20 ];
+    platforms = platforms.unix;
+  };
+}