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/jsonnet/default.nix

@@ -0,0 +1,47 @@
+{ stdenv, lib, jekyll, fetchFromGitHub }:
+
+stdenv.mkDerivation rec {
+  pname = "jsonnet";
+  version = "0.18.0";
+  outputs = ["out" "doc"];
+
+  src = fetchFromGitHub {
+    rev = "v${version}";
+    owner = "google";
+    repo = "jsonnet";
+    sha256 = "sha256-RmuvpKv9Dg3JcxsdZDBMehJjG5SvrV0spHgxApFeuJo=";
+  };
+
+  nativeBuildInputs = [ jekyll ];
+
+  enableParallelBuilding = true;
+
+  makeFlags = [
+    "jsonnet"
+    "jsonnetfmt"
+    "libjsonnet.so"
+  ];
+
+  # Upstream writes documentation in html, not in markdown/rst, so no
+  # other output formats, sorry.
+  preBuild = ''
+    jekyll build --source ./doc --destination ./html
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin $out/lib $out/include $out/share/doc/jsonnet
+    cp jsonnet $out/bin/
+    cp jsonnetfmt $out/bin/
+    cp libjsonnet*.so $out/lib/
+    cp -a include/*.h $out/include/
+    cp -r ./html $out/share/doc/jsonnet
+  '';
+
+  meta = {
+    description = "Purely-functional configuration language that helps you define JSON data";
+    maintainers = with lib.maintainers; [ benley copumpkin ];
+    license = lib.licenses.asl20;
+    homepage = "https://github.com/google/jsonnet";
+    platforms = lib.platforms.unix;
+  };
+}