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/build-support/rust/build-rust-crate/log.nix

@@ -0,0 +1,59 @@
+{ lib }:
+
+let echo_colored_body = start_escape:
+      # Body of a function that behaves like "echo" but
+      # has the output colored by the given start_escape
+      # sequence. E.g.
+      #
+      # * echo_x "Building ..."
+      # * echo_x -n "Running "
+      #
+      # This is more complicated than apparent at first sight
+      # because:
+      #   * The color markers and the text must be print
+      #     in the same echo statement. Otherise, other
+      #     intermingled text from concurrent builds will
+      #     be colored as well.
+      #   * We need to preserve the trailing newline of the
+      #     echo if and only if it is present. Bash likes
+      #     to strip those if we capture the output of echo
+      #     in a variable.
+      #   * Leading "-" will be interpreted by test as an
+      #     option for itself. Therefore, we prefix it with
+      #     an x in `[[ "x$1" =~ ^x- ]]`.
+      ''
+      local echo_args="";
+      while [[ "x$1" =~ ^x- ]]; do
+        echo_args+=" $1"
+        shift
+      done
+
+      local start_escape="$(printf '${start_escape}')"
+      local reset="$(printf '\033[0m')"
+      echo $echo_args $start_escape"$@"$reset
+      '';
+  echo_conditional_colored_body = colors: start_escape:
+      if colors == "always"
+      then (echo_colored_body start_escape)
+      else ''echo "$@"'';
+in {
+  echo_colored = colors: ''
+    echo_colored() {
+      ${echo_conditional_colored_body colors ''\033[0;1;32m''}
+    }
+
+    echo_error() {
+      ${echo_conditional_colored_body colors ''\033[0;1;31m''}
+    }
+   '';
+
+  noisily = colors: verbose: ''
+    noisily() {
+  	  ${lib.optionalString verbose ''
+        echo_colored -n "Running "
+        echo $@
+  	  ''}
+  	  $@
+    }
+  '';
+}