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/rund/default.nix

@@ -0,0 +1,49 @@
+{stdenv, lib, fetchFromGitHub, ldc ? null, dcompiler ? ldc }:
+
+assert dcompiler != null;
+
+stdenv.mkDerivation rec {
+  pname = "rund";
+  version = "1.0.0";
+
+  src = fetchFromGitHub {
+    owner = "dragon-lang";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "10x6f1nn294r5qnpacrpcbp348dndz5fv4nz6ih55c61ckpkvgcf";
+  };
+
+  buildInputs = [ dcompiler ];
+  buildPhase = ''
+    for candidate in dmd ldmd2 gdmd; do
+      echo Checking for DCompiler $candidate ...
+      dc=$(type -P $candidate || echo "")
+      if [ ! "$dc" == "" ]; then
+        break
+      fi
+    done
+    if [ "$dc" == "" ]; then
+      exit "Error: could not find a D compiler"
+    fi
+    echo Using DCompiler $candidate
+    $dc -I=$src/src -i -run $src/make.d build --out $NIX_BUILD_TOP
+  '';
+
+  doCheck = true;
+  checkPhase = ''
+    $NIX_BUILD_TOP/rund make.d test
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    mv $NIX_BUILD_TOP/rund $out/bin
+  '';
+
+  meta = with lib; {
+    description = "A compiler-wrapper that runs and caches D programs";
+    homepage = "https://github.com/dragon-lang/rund";
+    license = lib.licenses.boost;
+    maintainers = with maintainers; [ jonathanmarler ];
+    platforms = lib.platforms.unix;
+  };
+}