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/ruby-modules/rbenv/default.nix

@@ -0,0 +1,41 @@
+{ lib, stdenv, fetchFromGitHub, bash, installShellFiles }:
+
+stdenv.mkDerivation rec {
+  pname = "rbenv";
+  version = "1.2.0";
+
+  nativeBuildInputs = [ installShellFiles ];
+
+  src = fetchFromGitHub {
+    owner = "rbenv";
+    repo = "rbenv";
+    rev = "v${version}";
+    sha256 = "sha256-m/Yy5EK8pLTBFcsgKCrNvQrPFFIlYklXXZbjN4Nmm9c=";
+  };
+
+  postPatch = ''
+     patchShebangs src/configure
+     pushd src
+  '';
+
+  installPhase = ''
+    popd
+    mkdir -p $out/bin
+    mv libexec $out
+    ln -s $out/libexec/rbenv $out/bin/rbenv
+
+    installShellCompletion completions/rbenv.{bash,zsh}
+  '';
+
+  meta = with lib; {
+    description = "Groom your app’s Ruby environment";
+    longDescription = ''
+      Use rbenv to pick a Ruby version for your application and guarantee that your development environment matches production.
+      Put rbenv to work with Bundler for painless Ruby upgrades and bulletproof deployments.
+    '';
+    homepage = "https://github.com/rbenv/rbenv";
+    license = licenses.mit;
+    maintainers = with maintainers; [ fzakaria ];
+    platforms = platforms.all;
+  };
+}