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/scalafmt/default.nix

@@ -0,0 +1,47 @@
+{ lib, stdenv, jdk, jre, coursier, makeWrapper }:
+
+let
+  baseName = "scalafmt";
+  version = "3.4.3";
+  deps = stdenv.mkDerivation {
+    name = "${baseName}-deps-${version}";
+    buildCommand = ''
+      export COURSIER_CACHE=$(pwd)
+      ${coursier}/bin/cs fetch org.scalameta:scalafmt-cli_2.13:${version} > deps
+      mkdir -p $out/share/java
+      cp $(< deps) $out/share/java/
+    '';
+    outputHashMode = "recursive";
+    outputHashAlgo = "sha256";
+    outputHash     = "FWGvhKK/VnvetnHS35/z1errYTRZCrcfWyEAHlhKApk=";
+  };
+in
+stdenv.mkDerivation {
+  pname = baseName;
+  inherit version;
+
+  nativeBuildInputs = [ makeWrapper ];
+  buildInputs = [ jdk deps ];
+
+  dontUnpack = true;
+
+  installPhase = ''
+    runHook preInstall
+
+    makeWrapper ${jre}/bin/java $out/bin/${baseName} \
+      --add-flags "-cp $CLASSPATH org.scalafmt.cli.Cli"
+
+    runHook postInstall
+  '';
+
+  installCheckPhase = ''
+    $out/bin/${baseName} --version | grep -q "${version}"
+  '';
+
+  meta = with lib; {
+    description = "Opinionated code formatter for Scala";
+    homepage = "http://scalameta.org/scalafmt";
+    license = licenses.asl20;
+    maintainers = [ maintainers.markus1189 ];
+  };
+}