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/tools/misc/homesick/Gemfile

@@ -0,0 +1,3 @@
+source "https://rubygems.org"
+
+gem "homesick"

pkgs/tools/misc/homesick/Gemfile.lock

@@ -0,0 +1,15 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    homesick (1.1.6)
+      thor (>= 0.14.0)
+    thor (0.20.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  homesick
+
+BUNDLED WITH
+   2.1.4

pkgs/tools/misc/homesick/default.nix

@@ -0,0 +1,28 @@
+{ lib, bundlerEnv, bundlerUpdateScript, git }:
+bundlerEnv {
+  pname = "homesick";
+
+  gemdir = ./.;
+
+  # Cannot use `wrapProgram` because the the help is aware of the file name.
+  postInstall = ''
+    rm $out/bin/thor
+    sed 1a'ENV["PATH"] = "${git}/bin:#{ENV["PATH"] ? ":#{ENV["PATH"]}" : "" }"' -i $out/bin/homesick
+  '';
+
+  passthru.updateScript = bundlerUpdateScript "homesick";
+
+  meta = with lib; {
+    description = "Your home directory is your castle. Don't leave your dotfiles behind";
+    longDescription =
+      ''
+        Homesick is sorta like rip, but for dotfiles. It uses git to clone a repository containing
+        dotfiles, and saves them in ~/.homesick. It then allows you to symlink all the dotfiles into
+        place with a single command.
+      '';
+    homepage = "https://github.com/technicalpickles/homesick";
+    license = licenses.mit;
+    maintainers = with maintainers; [ aaronschif nicknovitski ];
+    platforms = platforms.unix;
+  };
+}

pkgs/tools/misc/homesick/gemset.nix

@@ -0,0 +1,19 @@
+{
+  homesick = {
+    dependencies = ["thor"];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0lxvnp4ncbx0irlblfxbd1f8h4hl11hgmyiy35q79w137r3prxml";
+      type = "gem";
+    };
+    version = "1.1.6";
+  };
+  thor = {
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0nmqpyj642sk4g16nkbq6pj856adpv91lp4krwhqkh2iw63aszdl";
+      type = "gem";
+    };
+    version = "0.20.0";
+  };
+}