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/misc/docopts/default.nix

@@ -0,0 +1,31 @@
+{ lib, buildGoPackage, fetchFromGitHub }:
+
+buildGoPackage rec {
+  pname = "docopts";
+  version = "0.6.4-with-no-mangle-double-dash";
+
+  src = fetchFromGitHub {
+    owner = "docopt";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0zxax0kl8wqpkzmw9ij4qgfhjbk4r7996pjyp9xf5icyk8knp00q";
+  };
+
+  goPackagePath = "github.com/docopt/${pname}";
+
+  goDeps = ./deps.nix;
+
+  subPackages = [ "./" ];
+
+  postInstall = ''
+    install -D -m 755 ./go/src/$goPackagePath/docopts.sh $out/bin/docopts.sh
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/docopt/${pname}";
+    description = "docopt CLI tool for shell scripting";
+    license = licenses.mit;
+    maintainers = [ maintainers.confus ];
+    platforms = platforms.linux;
+  };
+}

pkgs/development/tools/misc/docopts/deps.nix

@@ -0,0 +1,11 @@
+[
+  {
+    goPackagePath = "github.com/docopt/docopt-go";
+    fetch = {
+      type = "git";
+      url = "https://github.com/docopt/docopt.go";
+      rev = "ee0de3bc6815ee19d4a46c7eb90f829db0e014b1"; # "0.6.2";
+      sha256 = "sha256-0mCKIC5x7aauBL8ahXB9ExMfoTJl55HaafWWWPNRmUI=";
+    };
+  }
+]