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/applications/editors/yi/wrapper.nix

@@ -0,0 +1,33 @@
+# To use this for hacking of your Yi config file, drop into a shell
+# with env attribute.
+{ lib, stdenv, makeWrapper
+, haskellPackages
+, extraPackages ? (s: [])
+}:
+let
+  yiEnv = haskellPackages.ghcWithPackages
+    (self: [ self.yi ] ++ extraPackages self);
+in
+stdenv.mkDerivation {
+  pname = "yi-custom";
+  version = "0.0.0.1";
+  dontUnpack = true;
+  nativeBuildInputs = [ makeWrapper ];
+
+  buildCommand = ''
+    mkdir -p $out/bin
+    makeWrapper ${haskellPackages.yi}/bin/yi $out/bin/yi \
+      --set NIX_GHC ${yiEnv}/bin/ghc
+  '';
+
+  # For hacking purposes
+  passthru.env = yiEnv;
+
+  meta = with lib; {
+    description = "Allows Yi to find libraries and the compiler easily";
+    # This wrapper and wrapper only is under PD
+    license = licenses.publicDomain;
+    maintainers = with maintainers; [ ];
+  };
+
+}