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/nim-packages/nim_builder/default.nix

@@ -0,0 +1,19 @@
+{ lib, stdenv, nim }:
+
+stdenv.mkDerivation {
+  pname = "nim_builder";
+  inherit (nim) version;
+  dontUnpack = true;
+  nativeBuildInputs = [ nim ];
+  buildPhase = ''
+    cp ${./nim_builder.nim} nim_builder.nim
+    nim c --nimcache:$TMPDIR nim_builder
+  '';
+  installPhase = ''
+    install -Dt $out/bin nim_builder
+  '';
+  meta = {
+    description = "Internal Nixpkgs utility for buildNimPackage.";
+    maintainers = [ lib.maintainers.ehmry ];
+  };
+}