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/haskell/mueval/default.nix

@@ -0,0 +1,32 @@
+{ stdenv, makeWrapper, haskellPackages, packages ? (pkgs: [])
+}:
+
+let defaultPkgs = pkgs: [ pkgs.show
+                          pkgs.simple-reflect
+                          pkgs.QuickCheck
+                          pkgs.mtl
+                        ];
+    env = haskellPackages.ghcWithPackages
+           (pkgs: defaultPkgs pkgs ++ packages pkgs);
+    libDir = "${env}/lib/ghc-${env.version}";
+
+in stdenv.mkDerivation {
+  name = "mueval-env";
+
+  inherit (haskellPackages) mueval;
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  buildCommand = ''
+    mkdir -p $out/bin
+
+    makeWrapper $mueval/bin/mueval $out/bin/mueval \
+      --prefix PATH ":" "$out/bin"
+
+    makeWrapper $mueval/bin/mueval-core $out/bin/mueval \
+      --set "NIX_GHC_LIBDIR" "${libDir}"
+
+  '';
+
+  passthru = { inherit defaultPkgs; };
+}