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/compilers/chicken/5/eggDerivation.nix

@@ -0,0 +1,42 @@
+{ lib, stdenv, chicken, makeWrapper }:
+{ name, src
+, buildInputs ? []
+, chickenInstallFlags ? []
+, cscOptions          ? []
+, ...} @ args:
+
+let
+  overrides = import ./overrides.nix;
+  baseName = lib.getName name;
+  override = if builtins.hasAttr baseName overrides
+   then
+     builtins.getAttr baseName overrides
+   else
+     {};
+in
+stdenv.mkDerivation ({
+  name = "chicken-${name}";
+  propagatedBuildInputs = buildInputs;
+  nativeBuildInputs = [ makeWrapper ];
+  buildInputs = [ chicken ];
+
+  CSC_OPTIONS = lib.concatStringsSep " " cscOptions;
+
+  installPhase = ''
+    runHook preInstall
+
+    export CHICKEN_INSTALL_PREFIX=$out
+    export CHICKEN_INSTALL_REPOSITORY=$out/lib/chicken/${toString chicken.binaryVersion}
+    chicken-install ${lib.concatStringsSep " " chickenInstallFlags}
+
+    for f in $out/bin/*
+    do
+      wrapProgram $f \
+        --prefix CHICKEN_REPOSITORY_PATH : "$out/lib/chicken/${toString chicken.binaryVersion}:$CHICKEN_REPOSITORY_PATH" \
+        --prefix CHICKEN_INCLUDE_PATH : "$CHICKEN_INCLUDE_PATH:$out/share" \
+        --prefix PATH : "$out/bin:${chicken}/bin:$CHICKEN_REPOSITORY_PATH"
+    done
+
+    runHook postInstall
+  '';
+} // (builtins.removeAttrs args ["name" "buildInputs"]) // override)