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/sass/Gemfile

@@ -0,0 +1,2 @@
+source 'https://rubygems.org'
+gem 'sass'

pkgs/development/tools/sass/Gemfile.lock

@@ -0,0 +1,21 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    ffi (1.10.0)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
+    sass (3.7.4)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  sass
+
+BUNDLED WITH
+   2.1.4

pkgs/development/tools/sass/default.nix

@@ -0,0 +1,17 @@
+{ lib, bundlerApp, bundlerUpdateScript }:
+
+bundlerApp {
+  pname = "sass";
+  gemdir = ./.;
+  exes = [ "sass" "sass-convert" "scss" ];
+
+  passthru.updateScript = bundlerUpdateScript "sass";
+
+  meta = with lib; {
+    description = "Tools and Ruby libraries for the CSS3 extension languages: Sass and SCSS";
+    homepage    = "https://sass-lang.com";
+    license     = licenses.mit;
+    maintainers = with maintainers; [ romildo manveru nicknovitski ];
+    platforms   = platforms.unix;
+  };
+}

pkgs/development/tools/sass/gemset.nix

@@ -0,0 +1,55 @@
+{
+  ffi = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0j8pzj8raxbir5w5k6s7a042sb5k02pg0f8s4na1r5lan901j00p";
+      type = "gem";
+    };
+    version = "1.10.0";
+  };
+  rb-fsevent = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1lm1k7wpz69jx7jrc92w3ggczkjyjbfziq5mg62vjnxmzs383xx8";
+      type = "gem";
+    };
+    version = "0.10.3";
+  };
+  rb-inotify = {
+    dependencies = ["ffi"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1fs7hxm9g6ywv2yih83b879klhc4fs8i0p9166z795qmd77dk0a4";
+      type = "gem";
+    };
+    version = "0.10.0";
+  };
+  sass = {
+    dependencies = ["sass-listen"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0p95lhs0jza5l7hqci1isflxakz83xkj97lkvxl919is0lwhv2w0";
+      type = "gem";
+    };
+    version = "3.7.4";
+  };
+  sass-listen = {
+    dependencies = ["rb-fsevent" "rb-inotify"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0xw3q46cmahkgyldid5hwyiwacp590zj2vmswlll68ryvmvcp7df";
+      type = "gem";
+    };
+    version = "4.0.0";
+  };
+}